Ball Screw Jacks. Catalogue

Transcription

1 Ball Screw Jacks Catalgue

2 Cpyright SERVOMECH This catalgue cntents are under publisher cpyright and may nt be reprduced unless permissin is agreed. Every care has been taken t ensure the accuracy f the infrmatin cntained in this catalgue, but n liability can be accepted fr any errrs r missins.

3 Ball screw jacks INDEX 1. Ball screw jacks 1.1 Ball screw jacks descriptin... page Manufacturing features... page Materials and cmpnents... page Ball screw jacks verview... page Mdels... page Design screw jacks MA BS Series and SJ BS Series... page Design screw jacks HS Series... page Self-lcking cnditins... page Ball screw buckling... page Ball screw critical rtating speed... page Ball screw life... page Ball screw jacks with travelling screw (Md.A) 2.1 MA BS Series Md.A - structural elements... page MA BS Series Md.A - technical data... page MA 5 BS Md.A... page MA 10 BS Md.A... page MA 25 BS Md.A... page MA 50 BS Md.A... page MA 100 BS Md.A... page MA 150 BS Md.A... page MA 200 BS Md.A... page MA 350 BS Md.A... page Ball nut life... page 40 MA 5 BS Md.A... page 40 MA 10 BS Md.A... page 41 MA 25 BS Md.A... page 42 MA 50 BS Md.A... page 43 MA 100 BS Md.A... page 44 MA 150 BS Md.A... page 45 MA 200 BS Md.A... page 46 MA 350 BS Md.A... page Overall dimensins... page 48 MA BS Series Md.A, size page 48 MA BS Series Md.A, size page 50 MA BS Series Md.A with prtective tube... page Electric mtr fitting... page Accessries... page MA BS Series Md.A - rdering cde... page 60

4 Ball screw jacks 3. Ball screw jacks with travelling nut (Md.B) 3.1 MA BS Series Md.B - structural elements... page SJ BS Series Md.B- structural elements... page HS Series - structural elements... page Standard ball screw gearbx arrangements... page Max. input pwer... page Screw jacks technical data... page Ball screws and nuts technical data... page Ball nut dimensins... page Ball nut life... page 72 Screw diameter 16-20, accuracy grade IT 3 r IT 5... page 72 Screw diameter 16-20, accuracy grade IT 7... page 73 Screw diameter 25-32, accuracy grade IT 3 r IT 5... page 74 Screw diameter 25-32, accuracy grade IT 7... page 75 Screw diameter 40, accuracy grade IT 3 r IT 5, IT 7... page 76 Screw diameter 50-63, accuracy grade IT 3 r IT 5... page 77 Screw diameter 80, accuracy grade IT 3 r IT 5... page 78 Screw diameter , accuracy grade IT 3 r IT 5... page Ball screw direct efficiency... page Wrm gear direct efficiency... page Static braking trque... page Overall dimensins... page 82 MA BS Series Md.B... page 82 SJ BS Series Md.B, size page 84 SJ BS Series Md.B, size page 86 HS Series... page Electric mtr fitting... page Accessries... page Ordering cde... page 96 MA BS Series Md.B... page 96 SJ BS Series Md.B... page 98 HS Series... page General infrmatin 4.1 Installatin - Maintenance - Lubricatin... page Prduct nameplate... page Selectin frm - screw jacks with travelling screw (Md.A)... page Selectin frm - screw jacks with travelling nut (Md.B)... page Check sheet... page Lifting systems - layut... page LINEARMECH Brushless Servmtrs 5.1 General data... page Sizes and Dimensins... page Terms and Definitins... page Technical Data... page 118

5 Ball screw jacks 1.1 Ball screw jacks descriptin Screw jacks transfrm a rtary mtin f an electric, hydraulic r pneumatic mtr r even a manual peratin int a vertical linear lifting mtin (push r pull) r int a hrizntal psitining mtin. Screw jacks can be installed as a single unit r in lifting systems with different layuts cnnected by transmissin shafts, cuplings and bevel gearbxes. Screw jacks enable the synchrnized cnstant mvement f lifting systems even with a nt unifrmly distributed lad. Ball screw jacks cmbine the gear unit with a linear drive perfrmed by a ball screw that, in cmparisn with the traditinal acme screw, ffers fllwing advantages: higher ttal efficiency lnger life f the whle linear drive system The fllwing tw cmparative examples give an idea f the higher efficiency that can be btained with this system: cnsidering a screw jack cnsisting f a wrm gear with linear drive perfrmed by an acme screw, the ttal efficiency f the screw jack is between 10 % and 40 % cnsidering a screw jack cnsisting f a wrm gear with linear drive perfrmed by a ball screw, the ttal efficiency f the screw jack is between 30 % and 70 % With same perfrmance requirements in bth systems (speed and applied lad), the secnd slutin allws a % reductin f the installed pwer. SERVOMECH screw jacks are able t wrk under either push r pull lad and can be munted vertically upward and dwnward r hrizntally. SERVOMECH ball screw jacks are available in tw different mdels: travelling screw (Mdel A) travelling nut (Mdel B) SERVOMECH ball screw jacks range ffers three main families: MA BS, SJ BS and HS. Each family is designed and develped t represent a series f sizes with an adequate reciprcal gauge, t allw an easier selectin f the mst suitable size in terms f perfrmances and csts fr each applicatin. 1 MA BS Series (high perfrmance and duty cycle) Linear drive with travelling ball screw (Md.A) r with travelling ball nut (Md.B), wrm gear with rati frm 1 : 4 t 1 : 32, input speed up t rpm, il lubricated, duty cycle up t 100 % at 25 C ambient temperature. SJ BS Series (standard perfrmance and duty cycle) Linear drive with travelling ball nut (Md.B), wrm gear with rati frm 1 : 4 t 1 : 36, input speed up t rpm, grease lubricated, duty cycle up t 70 % at 25 C ambient temperature. HS Series (high speed, perfrmance and duty cycle) Linear drive with travelling ball nut (Md.B), bevel gear with rati frm 1 : 1 t 1 : 4, input speed up t rpm, il lubricated, duty cycle up t 100% at 25 C ambient temperature. 3

6 Ball screw jacks 1.2 Manufacturing features 1 SERVOMECH screw jacks are designed and manufactured using high technlgy and CNC machine tls. All wrking prcesses inside SERVOMECH cmply t its Quality Management System, develped accrding t ISO 9001:2008 and certified by TÜV Italia. Check tests are carried ut in-line during all manufacturing prcesses t mnitr and adjust pssible errrs, btaining a cnstant quality f the prductin withut reject. Final cntrl and functinal checks are carried ut t ensure high quality and reliability f the final prduct. MA BS and SJ BS Series screw jacks Input drive: precisin wrm gearbx, high efficiency design, ZI invlute prfile, reduced angular backlash; brnze wrmwheel; hardened and grund steel wrmshaft, with true invlute wrm thread and shaft grund. Husing: mnblc husing designed fr a mre cmpact and rbust shape, able t carry heavy lads and ensure a high precisin level f machining. HS Series screw jacks Input drive: bevel gear, gears made in high quality ally steel, cut accrding t GLEASON spiral tthing system, case-hardened, tempered and lapped in pairs; the accurate and cnslidated manufacturing technlgy allws t prduce bevel gears able t wrk quietly and with high efficiency. The angular backlash n the utput shaft is max. 10 arcmin (n request cntrlled and reduced backlash, max arcmin). Husing: cubic design, cmpact and rbust. Ball screws Nuts: made in case-hardened ally steel, with ball tracks hardness within the range (58 61) HRc; with flange DIN (fr Md.B nly) r with cylindrical flange designed by SERVOMECH; standard with backlash r preladed n request; radial r frntal recirculatin system; with ball nut end seals and grease nipple. Threaded shafts in ally steel, with rlled (accuracy grade IT 7) r whirled thread (accuracy grade IT 5 r IT 3 n request); the ball track hardness (58 61) HRc. Grease lubricated. Wide range f diameter - thread helix lead cmbinatins: the nminal diameter range is ( ) mm, the nminal lead range is ( ) mm. Gemetrical checks accrding t ISO 3408 and DIN Threaded shafts with machined ends and nuts t custmer s drawing available n request. 4

7 Ball screw jacks 1.3 Materials and Cmpnents Ball screws used in screw jacks Threaded shafts: quenched and tempered ally steel 42 CrM 4 r 50 CrM 4 (UNI EN 10083) Threaded bars available n stck (nminal diameter nminal lead, in mm): ROLLED, accuracy grade IT 7 1 BS 16 5 BS 20 5 BS 25 5 BS 32 5 BS 40 5 BS BS BS BS BS BS BS BS BS BS BS BS MACHINED, accuracy grade IT 5 (IT 3) BS 16 5 BS 20 5 BS 25 5 BS 32 5 BS 40 5 BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS Nuts: case-hardened ally steel 18 NiCrM 5 (UNI EN 10084) MA Series and SJ Series screw jacks Husing: casting in hardened and tempered aluminium ally EN AC-AlSi10Mg T6 casting in grey cast irn EN-GJL-250 (UNI EN 1561) casting in spheridal graphite irn EN-GJS (UNI EN 1563) welded steel S355J2 (UNI EN 10025) Wrmwheel: brnze EN 1982 CuSn12-C Wrm shaft: case-hardened steel 20 MnCr 5 (UNI EN 10084), grund invlute prfile ZI HS Series screw jacks Husing: casting in grey cast irn EN-GJL-250 (UNI EN 1561) Slid shafts: quenched and tempered carbn steel C45E +H +QT (UNI EN ) Input hllw shaft: case-hardened steel 20 MnCr 5 (UNI EN 10084) Output hllw shaft: quenched and tempered steel 39 NiCrM 3 (UNI EN ) Bevel gears: case-hardened steel 20 MnCr 5 (UNI EN 10084) 5

8 Ball screw jacks 1.4 Ball screw jacks verview Ball screw jacks 1 Travelling screw (Md. A) Travelling nut (Md. B) MA 5 MA 10 MA 25 MA 50 MA 100 MA 150 MA 200 MA 350 MA BS Series MA BS Series SJ BS Series HS Series BS 16 5 BS BS BS 25 5 BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS MA 5 MA 10 MA 25 MA 50 MA 80 MA 150 MA 200 MA 350 BS 16 5 BS BS BS 20 5 BS BS BS 25 5 BS BS BS 32 5 BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS 16 5 BS SJ 5 BS BS 20 5 BS BS BS 25 5 SJ 10 BS HS 10 BS BS 32 5 SJ 25 BS BS HS 25 BS BS SJ 50 BS HS 50 BS SJ 100 BS BS HS 100 SJ 150 BS BS HS 150 BS SJ 200 BS BS HS 200 SJ 250 BS BS SJ 300 BS BS SJ 400 BS BS 25 5 BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS MA BS Series SJ BS Series HS Series high efficiency screw jacks, suitable fr cntinuus peratin, duty cycle up t 100 %, rati frm 1 : 4 t 1 : 32, input speed up t rpm 8 standard sizes with lad capacity frm 5 kn t 350 kn Mdel A: travelling ball screw Mdel B: travelling ball nut ball screw frm BS 16 5 t BS standard perfrmances screw jacks, available nly in Md. B - travelling nut, duty cycle up t 70 %, rati frm 1 : 4 t 1 : 36, input speed up t rpm 8 standard sizes with lad capacity frm 5 kn t 400 kn Mdel B: travelling ball nut ball screw frm BS 16 5 t BS different input versins fr each size and rati: Vers.1: single input shaft Vers.2: duble input shaft Vers.3: flange and hllw shaft fr IEC/serv mtr Vers.4: flange and hllw shaft fr IEC/serv mtr with secnd input shaft Vers.5: Vers.1 + bell husing and cupling fr IEC/serv mtr Vers.6: Vers.2 + bell husing and cupling fr IEC/serv mtr lng-life synthetic il lubricated wrm gear lng-life synthetic grease lubricated wrm gear wide range f accessries available high speed screw jacks, available nly in Md. B - travelling nut, suitable fr cntinuus peratin, duty cycle up t 100 %, rati frm 1 : 1 t 1 : 4, input speed up t rpm 6 standard sizes with lad capacity frm 10 kn t 200 kn Mdel B: travelling ball nut ball screw frm BS 25 5 t BS different input versins fr each size and rati S: slid shaft with key, standard diameter R: slid shaft with key, larger diameter MF: flange and hllw shaft fr IEC mtr MA: flange and hllw shaft fr serv mtr Additinal utput shaft (S r R) lng-life synthetic il lubricated bevel gear 6

9 Ball screw jacks 1.5 Mdels Ball screw jacks are available in tw different mdels: travelling screw (Mdel A) travelling nut (Mdel B) 1 Mdel A - travelling screw The ball nut is integral with the wrm wheel. The linear mtin is perfrmed by the ball screw being driven by the nut thrugh the screw jack husing, therefre there must be enugh space n bth screw jack sides. In peratin, the screw des nt rtate and its translatin is pssible nly if the reacting trque is applied. Accessries: prtective tube prtective bellws safety nut varius screw end attachments limit switches anti-turn device stp nut trunnin munt brnze guides Mdel B travelling nut The ball screw is fixed t the wrm wheel. In peratin the screw rtates with the wrm wheel at the same speed, driving the brnze nut up and dwn alng the ball screw. The linear mtin f the nut is pssible nly if the reacting trque is applied, aviding the integral rtatin with the ball screw. Accessries: prtective bellws safety nut nut supprt with pivting pins nut at custmer s drawing trunnin munt 7

10 Ball screw jacks 1.5 Mdels 1 MA BS Series screw jacks are available in bth mdels, while SJ BS and HS Series are available nly with travelling nut. The chice f the mdel depends n the selected screw jack type r n the specific requirements f the applicatin, but in case it can be chsen between the tw mdels (nly fr MA BS Series), it shuld be cnsidered that, with same ball screw diameter and lead, the perfrmances f the screw jack MA BS Series Md. A are higher than thse btained with Md.B. This is due t the fact that the travelling screw mdel has an integrated structure between the gear parts and the ball screw that allws higher perfrmances in terms f: Efficiency Lad capacity Life Stiffness Cnsidering the several advantages btained, SERVOMECH has registered an industrial patent right fr this screw jack mdel. SERVOMECH screw jacks can perate in vertical, hrizntal r inclined plane. Different input ptins are available, such as: MA BS Series and SJ BS Series: single r duble shaft, mtr flange r mtr flange with secnd input shaft. HS Series: single slid shaft r flange as mtr attachment and secnd slid utput shaft. All screw jacks are available with flange r bell husing + cupling fr: AC 3-phase electric mtrs with IEC UNEL-MEC flange servmtrs hydraulic mtrs 8

11 Ball screw jacks 1.6 Design screw jacks MA BS Series and SJ BS Series INPUT SHAFT ROTATION SCREW OR NUT LIFTING DIRECTION 1 Mdel A Mdel B INPUT VERSIONS Vers.1 Vers.2 Vers.3 Vers.4 Vers.5 Vers.6 Vers.1: single input shaft Vers.2: duble input shaft Vers.3: flange and hllw shaft fr IEC/serv mtr Vers.4: flange and hllw shaft fr IEC/serv mtr + secnd input shaft Vers.5: Vers.1 + bell husing and cupling fr IEC/serv mtr Vers.6: Vers.2 + bell husing and cupling fr IEC/serv mtr SCREW JACK MOUNTING POSITIONS UPWARD (U) DOWNWARD (D) HORIZONTAL (H) RIGHT-HAND (RH) LEFT-HAND (LH) RIGHT-HAND (RH) LEFT-HAND (LH) RIGHT-HAND (RH) LEFT-HAND (LH) 9

12 Ball screw jacks 1.7 Design screw jacks HS Series KINEMATICS SCHEME 1 Scheme 10 Bevel gear wheel n side ppsite t nut Scheme 20 Bevel gear wheel n nut side INPUT SHAFT S R MF / MA Designatin S: slid shaft with key, standard diameter Designatin R: slid shaft with key, larger diameter Designatin MF: flange and hllw shaft fr IEC/serv mtr Designatin MA: special flange fr serv r hydraulic mtr 10

13 Ball screw jacks 1.7 Design screw jacks HS Series ADDITIONAL OUTPUT SHAFT Screw jacks HS Series can be equipped with ne r mre additinal utput shafts. Available versins are: S: slid shaft with key, standard diameter R: slid shaft with key, larger diameter The shafts psitin refers t the main input shaft and is expressed by an angle with cunter-clckwise psitive directin and screw jack tp view (ball nut side). 1 additinal utput shaft 180 additinal utput shaft 270 additinal utput shaft 90 input shaft (0 ) input shaft (0 ) input shaft (0 ) WARNING! The rtating speed f the additinal utput shaft is always the same as the input shaft rtating speed, independently frm the screw jack rati. SCREW JACK MOUNTING POSITION The munting psitin refers t the utput axis with ball screw. UPWARD (U) HORIZONTAL (H) DOWNWARD (D) 11

14 Ball screw jacks Design screw jacks HS Series SCREW JACK MOUNTING SIDE The screw jack is fixed n a surface f the supprting structure by means f prper threaded hles. It is essential t precisely define the fixing surface f the screw jack since this determines a specific psitin f the fixing hles. side A side B side F side E side F side C side C side D side E side D side B side A Side C is the side f the main input (slid shaft r IEC mtr cupling). Side A and side B crrespnd t the ball screw axis, n ball nut side and ppsite side respectively. Side D, side E and side F are the sides where it is pssible t munt an additinal utput shaft, in versin 90, 180 r 270 respectively. 1.8 Self-lcking cnditins A ball screw jack is in self-lcking cnditin when: a push r pull lad applied n a nt wrking screw jack des nt cause the linear mtin (static selflcking cnditin); by interrupting the mtr pwer supply f a wrking screw jack with push r pull lad, the mtin stps (dynamic self-lcking cnditin). Due t the high efficiency f ball screw jacks, it is nt pssible t ensure the static r dynamic self-lcking cnditin withut using a brake mtr. Accrding t the ttal direct efficiency value f the screw jack the fllwing cnditins are pssible: 1) Uncertain Self-lcking: with ttal direct efficiency values between 0.30 and 0.50, the screw jacks are in an uncertain cnditin. The self-lcking cnditin depends n the lad and the inertia f the system. In this case we recmmend t use a brake mtr t guarantee the self-lcking cnditin r t cntact SERVOMECH t evaluate the applicatin. 2) Back-driving: with ttal direct efficiency values higher than 0.50 the screw jacks are always nt selflcking. UNCERTAIN BACK-DRIVING SELF-LOCKING Direct efficiency values and calculatin frmulas t determine the required braking trque t ensure a selflcking cnditin are stated fr each screw jack in the specific chapters. 12

15 Ball screw jacks 1.9 Ball screw buckling One f the mst imprtant screw jack selectin criteria is the buckling resistance f the ball screw. Buckling limits are relevant fr push lad nly. Three cases are cnsidered: Euler I: screw jack husing firmly fixed t the base free travelling screw end screw jack husing firmly fixed t the base free travelling nut Euler II: screw jack husing and travelling screw end fixed t pivting supprts screw jack husing and travelling nut fixed t pivting supprts Euler III: screw jack husing firmly fixed t the base guided travelling screw end screw jack husing firmly fixed t the base guided travelling nut Fllwing diagrams (knwn as Euler curves) shw the max. push lad allwed n the ball screw, cnsidering a buckling safety factr equals 4. Fr particular r critical applicatins in terms f safety (e.g. theatre lifts), please cntact SERVOMECH. 1 Euler I: screw jack husing firmly fixed t the base - free screw end screw jack husing firmly fixed t the base - free travelling nut Example: with a push lad f 7 kn applied n a screw length f mm, the right selectin is a screw with nminal diameter 40 mm, munted n a screw jack MA 50 BS r SJ 50 BS r HS 50. Lad [kn] Euler I Safety factr: BS BS 100 P h BS 80 P h 2 BS 16 P h BS 20 P h BS 25 P h BS 32 P h BS 32 5 BS 40 P h BS 50 P h BS 63 P h Ball screw length, L [m] 13

16 Ball screw jacks Ball screw buckling Euler II: screw jack husing and travelling screw end fixed t pivting supprts screw jack husing and travelling nut fixed t pivting supprts Example: with a push lad f 10 kn applied n a screw length f mm, the right selectin is a screw with nminal diameter 32, munted n a screw jack MA 25 BS r SJ 25 BS r HS 25. Lad [kn] Euler II Safety factr: BS BS 100 P h BS 80 P h BS 63 P h 3 2 BS 16 P h BS 20 P h BS 25 P h BS 32 P h BS 32 5 BS 40 P h BS 50 P h Ball screw length, L [m] 14

17 Ball screw jacks 1.9 Ball screw buckling Euler III: screw jack husing firmly fixed t the base - guided travelling screw end screw jack husing firmly fixed t the base - guided travelling nut Example: with push lad f 40 kn applied n a screw length f mm, the right selectin is a screw with nminal diameter 63, munted n a screw jack MA 150 BS r SJ 150 BS r HS Lad [kn] Euler III Safety factr: BS BS 100 P h BS 80 P h BS 63 P h 5 4 BS 50 P h 3 2 BS 16 P h BS 20 P h BS 25 P h BS 32 P h BS 32 5 BS 40 P h Ball screw length, L [m] 15

18 1 Ball screw jacks 1.10 Ball screw critical rtating speed Fllwing factrs limit the ball screw rtating speed: 1) external factrs (screw length and screw end supprts) 2) internal factrs (ball material, gemetry and material f the recirculatin elements) 1) External factrs In rder t ensure a prper wrking f a ball screw system and t prevent imbalances which culd damage the ball screw, the rtating speed must nt reach the critical level. Therefre, this limit exists nly fr Mdel B screw jacks with travelling nut and rtating screw. The critical rtating speed depends n the threaded shaft diameter, the type f screw end and the length f the free ball screw. The fllwing frmulas are used t calculate the max. allwed rtating speed. They restrict the rtating speed t 80 % f the critical value and they are valid fr threaded shafts withut an axial thrugh hle: Free screw end n max [rpm] = max. allwed rtating speed d 2 [mm] = ball screw shaft rt diameter L [mm] = length f screw withut end supprt Example: Fr a screw BS 40 10, 1 m lng, with nt supprted end, the max. allwed rtating speed is rpm. This rtating speed is equivalent t a linear speed f 175 mm/s Ball screw rtating speed [rpm] Ball screw length, L [m] 1 - BS BS BS BS BS BS BS BS BS BS BS

19 Ball screw jacks ATTENTION! By hrizntal munting a ball screw static deflectin, caused by its weight and pssibly aggravated by the presence f the push lad, shuld always be cnsidered. Therefre, we recmmend an accurate evaluatin and use f a screw supprting system n bth nut sides, integral and travelling with the nut itself; this will ensure the crrect alignment and cncentricity between the screw and the nut. In case f dubts, please cntact SERVOMECH. 1 Supprted screw end n max [rpm] = max. allwed rtating speed d 2 [mm] = ball screw shaft rt diameter L [mm] = length f screw with end supprt Example: Fr a screw BS 40 10, 3 m lng, with end supprt, the max. allwed rtating speed is 560 rpm. This rtating speed is equivalent t a linear speed f 93 mm/s Ball screw rtating speed [rpm] Ball screw length, L [m] 1 - BS BS BS BS BS BS BS BS BS BS BS

20 Ball screw jacks Ball screw critical rtating speed 2) Internal Factrs Depending n screw material, gemetry and material f the recirculatin elements and screw diameter, there is a specific limit f the max. rtating speed. Fr ball screws used in screw jacks, SERVOMECH cnsiders fllwing max. rtating speed values: Ball screw nminal diameter [mm] Max. rtating speed [rpm] NOTE: by travelling screw jack (Md.A), nly the limit due t internal factrs (2) is effective; by screw jack with travelling nut (Md.B), the max. allwed rtating speed is the lwer speed value calculated using bth criteria (1) and (2) Ball screw life calculatin Ball screws life crrespnds t the number f revlutins that the screw can perfrm with regard t its nut befre any sign f fatigue appears n the material f screw, nut and rlling elements. The nminal ball screw life ( L 10 ) is calculated with the fllwing frmula: where: L 10 [revlutins] = ball screw nminal life C a [N] = ball screw dynamic lad F m [N] = equivalent dynamic lad f sh = shcks factr f sh = 1: lad withut shcks 1 < f sh 1.3: lad with light shcks 1.3 < f sh 1.8: lad with medium shcks 1.8 < f sh 3: lad with heavy shcks The result f the calculatin crrespnds t the number f revlutins f the screw with regard t the nut, reached by the 90 % f the ball screw, seemingly identical, subject t the same lad cnditins, mtin laws and envirnment cnditins. The equivalent dynamic lad ( F m ) is defined as an hypthetical lad cncentric t the screw, axial nly, with cnstant width and directin that, if applied, wuld have the same effects n the ball screw life as the real applied lad. T determine it, the wrking cycle is divided in distinct and separate phases, each f them characterized by its lad level, the specific rtating speed and the relevant time f lad applicatin. 18

21 Ball screw jacks where: t i = duratin f each single phase F i = lad level fr each single phase n i = rtating speed fr each single phase 1 If a preladed nut is used, the equivalent dynamic lad is determined taking int cnsideratin als the pre-lad frce, adding it t the lad level f each single phase f the wrking cycle. Example: i t i [s] n i [rpm] F i [N] n m [rpm] F m [N] F [N] n [rpm] F = n = F = F = m n = n = 585 m F = n = t [s] t [s] The ball screw life expressed in hurs ( L 10h ) is calculated as fllws: where: n m [rpm] = equivalent rtating speed The previus frmulas regarding the life refer t a ball screw reliability f 90 %. If a higher life reliability is required (mdified ball screw life, L 10m ), the crrective factr f a must be applied: Reliability [%] Factr f a

22 Screw Jacks with travelling ball screw (Md.A) 2.1 MA BS Series Md.A - STRUCTURAL ELEMENTS DESIGN PATENTED

23 Screw Jacks with travelling ball screw (Md.A) 2.1 MA BS Series Md.A - STRUCTURAL ELEMENTS 1 - ball screw in quenched and tempered ally steel 2 - ball nut in case-hardened and grund steel with frntal recirculatin system that ensures higher perfrmances cmpared t the radial system, because f greater number f balls which transmit the lad 3 - wrm with grund ZI invlute thread prfile (UNI 4760) in case-hardened steel 4 - brnze wrmwheel with true invlute prfile ZI (UNI 4760) 5 - taper rller bearings that prvide system high stiffness and allw t maximize the ball screw diameter thanks t the minimum radial size 6 - gear bx shape which allws effective heat dissipatin and 100 % duty cycle 7 - cast irn supprt f the wrm wheel rim 8 - bttm cver with uter diameter in tlerance g7, it can be used fr the screw jack centring 9 - tp cver with re-lubricatin system fr the ball screw: thrugh the grease nipple (10) it is pssible t put in grease which ges thrugh the lubricatin pipe (11) and reaches the ball nut. The radial lubricant seals (13) and the sealing scrapers (17) ensure the seal and create a lubricant reserve fr the ball nut. This system allws t keep the ball nut cnstantly lubricated increasing its life grease nipple 11 - lubricatin pipe 12 - synthetic il lubricated wrm gearbx fr a better heat dissipatin; this allws higher input speed, imprved efficiency and a lnger life 13 - radial lubricant seal 14 - O-ring as lubricant seal 15 - NILOS seal which allws t create a chamber fr the lubricant (16) f the upper bearing, that wuld therwise be sparsely lubricated because nt reached by the gear il; the seal is used nly in case f vertical munting psitin 16 - bearing lubricant chamber 17 - sealing scraper 18 - il drain plug 19 - breather 20 - il level plug 21 - ball screw stp nut 2 21

24 Screw Jacks with travelling ball screw (Md.A) 2.2 MA BS Series Md.A - TECHNICAL DATA SIZE MA 5 BS MA 10 BS MA 25 BS MA 50 BS Lad capacity [kn], (push - pull) Ball screw diameter [mm] Wrm gear centre distance [mm] fast RV 1 : 4 (4 : 16) 1 : 5 (4 : 20) 1 : 6 (4 : 24) 1 : 7 (4 : 28) Rati nrmal RN 1 : 16 (2 : 32) 1 : 20 1 : 18 (2 : 36) 1 : 14 (2 : 28) 2 Ball screw cde 1 slw RL 1 : 24 1 : 25 1 : 24 1 : 28 Diameter Lead Ball [mm] (1/8 ) (1/8 ) (1/4 ) (1/4 ) Accuracy grade ( 1 ) IT 7 IT 7 IT 7 IT 7 Number f starts Number f circuits C a [kn] C 0a [kn] Strke [mm] fr 1 input shaft revlutin Rati RV RN RL Diameter Lead Ball [mm] (1/8 ) (5/32 ) (1/4 ) (1/4 ) Ball screw cde 2 Accuracy grade ( 1 ) IT 7 IT 7 IT 7 IT 7 Number f starts Number f circuits C a [kn] C 0a [kn] Strke [mm] fr 1 input shaft revlutin Rati RV RN RL Husing material casting in aluminium ally EN AC-AlSi10Mg T6 casting in spheridal graphite irn EN-GJS (UNI EN 1563) Mass f screw jack withut ball screw [kg] Mass fr every 100 mm f ball screw [kg] ( 1 ) - n request, ball screws with accuracy grade IT 5 r IT 3 can be supplied Diameter Lead Ball [mm] (1/8 ) (1/8 ) 6.35 (1/4 ) 6.35 (1/4 ) Ball screw cde 3 n request Accuracy grade IT 7 IT 7 IT 7 IT 7 Number f starts Number f circuits C a [kn] C 0a [kn]

25 Screw Jacks with travelling ball screw (Md.A) 2.2 MA BS Series Md.A - TECHNICAL DATA MA 100 BS MA 150 BS MA 200 BS MA 350 BS SIZE Lad capacity [kn], (push - pull) Ball screw diameter [mm] Wrm gear centre distance [mm] 1 : 8 (4 : 32) 1 : 8 (4 : 32) 1 : 8 (4 : 32) 3 : 32 RV fast 1 : 24 1 : 24 1 : 24 1 : 16 (2 : 32) RN nrmal Rati 1 : 32 1 : 32 1 : 32 1 : 32 RL slw Diameter Lead (9/32 ) (9/32 ) (9/32 ) (3/8 ) Ball [mm] IT 5 IT 5 IT 5 IT 5 Accuracy grade ( 1 ) Number f starts Number f circuits C a [kn] C 0a [kn] Ball screw cde RV RN RL Rati Strke [mm] fr 1 input shaft revlutin Diameter Lead (9/32 ) (3/8 ) (1/2 ) (1/2 ) Ball [mm] IT 5 IT 5 IT 5 IT 5 Accuracy grade ( 1 ) Number f starts Number f circuits Ball screw cde C a [kn] C 0a [kn] RV RN RL Rati Strke [mm] fr 1 input shaft revlutin casting in spheridal graphite irn EN-GJS (UNI EN 1563) Husing material Mass f screw jack withut ball screw [kg] Mass fr every 100 mm f ball screw [kg] ( 1 ) - n request, ball screws with accuracy grade IT 3 can be supplied 23

26 Screw Jacks with travelling ball screw (Md.A) 2.3 MA 5 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS 16 5 LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 5 kn 4 kn 3 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 5 kn 4 kn 3 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 5 kn 4 kn 3 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 24

27 Screw Jacks with travelling ball screw (Md.A) 2.3 MA 5 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS 16 5 BS BS n 1 [rpm] RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (5 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 0.2 Static braking trque T F [] with 5 kn RATIO BS 16 5 BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 25

28 Screw Jacks with travelling ball screw (Md.A) 2.4 MA 10 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS 25 5 LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 10 kn 8 kn 6 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 10 kn 8 kn 6 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 10 kn 8 kn 6 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 26

29 Screw Jacks with travelling ball screw (Md.A) 2.4 MA 10 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS 25 5 BS BS n 1 [rpm] RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (10 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 0.35 Static braking trque T F [] with 10 kn RATIO BS 25 5 BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 27

30 Screw Jacks with travelling ball screw (Md.A) 2.5 MA 25 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 25 kn 20 kn 15 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 20 kn 15 kn 12.5 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 15 kn 12.5 kn 10 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 28

31 Screw Jacks with travelling ball screw (Md.A) 2.5 MA 25 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS BS BS n 1 [rpm] RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (25 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 1.5 Static braking trque T F [] with 25 kn RATIO BS BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 29

32 Screw Jacks with travelling ball screw (Md.A) 2.6 MA 50 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 50 kn 35 kn 25 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 40 kn 30 kn 20 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 25 kn 20 kn 15 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 30

33 Screw Jacks with travelling ball screw (Md.A) 2.6 MA 50 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS BS BS n 1 [rpm] RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (50 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 2.4 Static braking trque T F [] with 50 kn RATIO BS BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 31

34 Screw Jacks with travelling ball screw (Md.A) 2.7 MA 100 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 100 kn 75 kn 50 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 80 kn 60 kn 40 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 32

35 Screw Jacks with travelling ball screw (Md.A) 2.7 MA 100 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS BS n 1 [rpm] RATIO RATIO RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (100 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 4.0 Static braking trque T F [] with 100 kn RATIO BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 33

36 Screw Jacks with travelling ball screw (Md.A) 2.8 MA 150 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 150 kn 120 kn 80 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 100 kn 80 kn 50 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 34

37 Screw Jacks with travelling ball screw (Md.A) 2.8 MA 150 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS BS n 1 [rpm] RATIO RATIO RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (150 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 5.3 Static braking trque T F [] with 150 kn RATIO BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 35

38 Screw Jacks with travelling ball screw (Md.A) 2.9 MA 200 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 200 kn 150 kn 100 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 150 kn 100 kn 75 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL START ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 36

39 Screw Jacks with travelling ball screw (Md.A) 2.9 MA 200 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS BS n 1 [rpm] RATIO RATIO RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (200 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 6.8 Static braking trque T F [] with 200 kn RATIO BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 37

40 Screw Jacks with travelling ball screw (Md.A) 2.10 MA 350 BS Md.A Perfrmances Fllwing tables shw the screw jack LINEAR SPEED v [mm/s] and relative TORQUE [] and POWER [] n input shaft, with reference t the INPUT SPEED n 1 [rpm], the RATIO (RV, RN, RL) and the LOAD [kn] applied n the screw jack. Please, nte that LOAD [kn] here means the equivalent lad applied n the ball screw (see Chapter 1.11, page 18: Ball screw life calculatin ). Intermediate figures fr linear speed v, trque and pwer crrespnding t different input speeds can be calculated by linear interplatin f the figures stated in the table. 2 n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 350 kn 250 kn 200 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL AVV n 1 [rpm] BS LINEAR SPEED v [mm/s] Max. input pwer 1 P max [] RV RN RL RV RN RL LOAD 300 kn 200 kn 150 kn RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL AVV ( 1 ) - Max. screw jack input pwer, calculated fr wrm - wrmwheel life f hurs 38

41 Screw Jacks with travelling ball screw (Md.A) 2.10 MA 350 BS Md.A Screw jack ttal efficiency The screw jack ttal efficiency is calculated as fllws: where: η BS : ball screw theretical efficiency η R : wrm - wrmwheel efficiency η CT : bearings and seals ttal efficiency η tt BS BS n 1 [rpm] RATIO RATIO RV RN RL RV RN RL START NOTE: the efficiency values in the abve table d nt take int accunt the factr 0.92 fr η BS The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a factr f 0.92 n the given efficiency in rder t take int cnsideratin als lad and speed: 2 Static braking trque n input shaft The next table shw the static braking trques, i.e. the braking trques necessary t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft and it is calculated fr an applied lad equal t the max. supprtable lad (350 kn). Fr braking trques with lads lwer than the maximum ne, it is pssible t make a linear prprtin with the values stated in the table and the required lad. The resulting braking trque value shall then be cmpared t the min. threshld value T F min which cnsiders vibratins and shcks that culd increase the nt self-lcking cnditin f the system. It is equal t: T F min = 13.4 Static braking trque T F [] with 350 kn RATIO BS BS RV RN RL The real braking trque t be applied n the input shaft fr the generic lad applied n the screw jack (lwer than the maximum ne) is therefre the highest f the tw values. 39

42 Screw Jacks with travelling ball screw (Md.A) 2.11 Ball nut life MA 5 BS Md.A The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] C B A Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS B BS A BS C 40

43 2.11 Ball nut life MA 10 BS Md.A Screw Jacks with travelling ball screw (Md.A) The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] F E D Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS D BS E BS F 41

44 Screw Jacks with travelling ball screw (Md.A) 2.11 Ball nut life MA 25 BS Md.A The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] I H G Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS H BS G BS I 42

45 2.11 Ball nut life MA 50 BS Md.A Screw Jacks with travelling ball screw (Md.A) The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] L 6 5 J K Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS K BS J BS L 43

46 Screw Jacks with travelling ball screw (Md.A) 2.11 Ball nut life MA 100 BS Md.A The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] M N Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS N BS M 44

47 2.11 Ball nut life MA 150 BS Md.A Screw Jacks with travelling ball screw (Md.A) The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] O 15 P Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS O BS P 45

48 Screw Jacks with travelling ball screw (Md.A) 2.11 Ball nut life MA 200 BS Md.A The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] S R Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS R BS S 46

49 2.11 Ball nut life MA 350 BS Md.A Screw Jacks with travelling ball screw (Md.A) The life graphs belw refer t cnstant applied lad, withut shcks, with ball screws reliability f 90 %. Fr different lad and/r reliability cnditins, see ch Ball screws life calculatin n page 18 r cntact SERVOMECH. Lad [kn] T U Life in perfrmed strke [km] BALL SCREW Ball [mm] n f starts n f circuits C a [kn] C 0a [kn] CURVE BS T BS U 47

50 Screw Jacks with travelling ball screw (Md.A) 2.12 Overall dimensins MA BS Series Md.A, size W + STROKE O V Z BALL SCREW P P X + STROKE Q A QA D1 STROKE Q1 Q1 O H g7 O H1 l O H1 O H g7 L/2 q O d j6 A/2 Vers.1: single input shaft O g Vers.3: flange and hllw shaft IEC Vers.4: flange and hllw shaft IEC + 2 nd shaft B l L l FLANGE J1 F1 F n q i g C E OO O d j6 S I U J2s J1s J2 a1 O k H7 O a O e k7 h2 v O u O b g D4 h h1 G Vers.2: duble input shaft BELL-HOUSING NOTE: angular psitin f ball screw grease nipple (different angular psitin n request) Vers.5: Vers.1 with bell-husing and cupling IEC Vers.6: Vers.2 with bell-husing and cupling IEC D1 D1 O c1 s O c D3 THREADED END NF CYLINDRICAL END N ROD END TF FLANGE END P 48

51 Screw Jacks with travelling ball screw (Md.A) 2.12 Overall dimensins MA BS Series Md.A, size SIZE MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 100 BS MA 150 BS BALL SCREW BS 16 P h BS 25 P h BS 32 P h BS 40 P h BS 50 P h BS 63 P h A B C D1 (min.) D3 (min.) D4 (min.) E F F G H H I L O Q Q QA S U V W X Z M5, depth 10 M5, depth 12 M5, depth 10 M6, depth 14 M6, depth 14 M6, depth 14 a a b c c d e g g h h h i M M M M30 2 M42 3 M42 3 k l n M5, depth 10 M6, depth 14 M8, depth 16 M8, depth 16 M8, depth 16 M8, depth 16 q s u, n hles 7, 4 hles 9, 4 hles 11, 4 hles 17, 4 hles 21, 4 hles 21, 4 hles v J1 63 B5/B14: B5/B14: 69 63/71 B5: B5: /90 B5: /90 B5: 120 J1s J2 J2s 63 B5: B14: 5 71 B5: B14: B5: B14: B5: B14: 71 B5: B14: B5: B14: 3 63 B5: 7 71 B5: B5: B14: B5: B14: B5: B14: 90 B5: B14: 7 80 B5: 20 80/90 B5: 80/90 B5: 90 B5: B14: B5: B14: B5: B14: 100 B5: B14: 100/112 B /112 B14: /112 B /112 B14: 100/112 B /112 B14: /112 B /112 B14: 2 49

52 Screw Jacks with travelling ball screw (Md.A) Overall dimensins MA BS Series Md.A, size W + STROKE G F1 C O V BALL SCREW S B F I O g U P P n OO E X + STROKE Q A QA D1 STROKE A/2 J2s BELL-HOUSING Q1 Q1 l Vers.2: duble shaft NOTE: angular psitin f ball screw grease nipple (different angular psitin n request) J1s J2 O H g7 O H1 O H1 O H g7 Vers.3: flange and hllw shaft IEC J1 a1 l q O d j6 L/2 L O k H7 i O e k7 h1 h2 O c1 v O u O a O b s Vers.1: single shaft Vers.4: flange and hllw shaft IEC + 2 nd shaft FLANGE Vers.5: Vers.1 with bell-husing and cupling IEC Vers.6: Vers.2 with bell-husing and cupling IEC SIZE MA 200 BS MA 350 BS BALL SCR. BS 80 P h BS 100 P h A B C D1 (min.) D3 (min.) D4 (min.) E F F G H H I L O P Q Q QA S U V W X Z M10, depth 20 M10, depth 25 a a b c c d e g g h h h i M56 3 M80 3 k l n M10, depth 24 M12, depth 32 q s u, n hles 26, 6 hles 30, 6 hles v J1 90 B5: /112 B5: 142 J1s 90 B5: 100/112 B5: 10 J2 132 B5: B5: B5: 365 J2s 132 B5: B5: B5: 35 D4 g D1 g D1 O c h D3 THREADED END NF CYLINDRICAL END N ROD END TF FLANGE END P 50

53 Screw Jacks with travelling ball screw (Md.A) 2.12 Overall dimensins MA BS Series Md.A with prtective tube T PROTECTIVE TUBE T O H2 BRONZE GUIDES G/TG + PROTECTIVE TUBE T Q2 Q3 BRONZE GUIDE Q Q4 Q3 O T b + STROKE O H3 O T1 b1 + STROKE 2 SIZE MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 100 BS MA 150 BS MA 200 BS MA 350 BS BALL SCREW BS 16 P h BS 25 P h BS 32 P h BS 40 P h BS 50 P h BS 63 P h BS 80 P h BS 100 P h H Q Q Q T Q b T1 H3 b1 exec. T exec. T+SN exec. T+AR exec. T+FCP exec. T+AR+FCP exec. T+FCM exec. T exec. T+SN exec. T+AR exec. T+FCP exec. T+AR+FCP exec. T+FCM exec. T exec. T+SN exec. T+AR exec. T+FCP exec. T+AR+FCP exec. T+FCM exec. TG exec. TG+FCM exec. TG+FCP exec. TG+AR exec. TG exec. TG+FCP exec. TG+FCM exec. TG+AR exec. TG exec. TG+FCP exec. TG+FCM exec. TG+AR

54 Screw Jacks with travelling ball screw (Md.A) 2.13 Electric mtr fitting IEC elettric mtrs 2 MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 100 BS MA 150 BS MA 200 BS MA 350 BS 63 B5 F F F B14 F F 71 B5 B B F F B14 B B F 80 B5 B F F F B14 B 90 B5 B B F F F B14 B B B5 B B B F B14 B B B 132 B5 B B 160 B5 B F - flange with hllw shaft IEC B - bell-husing + cupling IEC LINEARMECH Brushless Servmtrs Ball screw jacks can be equipped with Linearmech Brushless Servmtrs BM Series with metric flange dimensins, accrding t IEC 34-7, UNEL regulatins. Pssible fittings are described bellw: Servmtr MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 100 BS MA 150 BS MA 200 BS MA 350 BS BM 45 L IEC BM 63 S IEC BM 63 L IEC BM 82 S IEC BM 82 L IEC BM 102 S IEC BM 102 L6 IEC BM 102 L8 IEC Fr technical data f servmtrs, please refer t Chapter 5 Serv mtrs n page 115. Flanges and bell-husings t specific drawing fr hydraulic mtrs r serv mtrs are available n request. 52

55 Screw Jacks with travelling ball screw (Md.A) 2.14 Accessries Brnze guides The brnze guide ensures the caxial psitin f the ball screw with the its nut. This is extremely imprtant t have the ptimal cntact between balls and ball tracks fr a lnger screw life. Guides are munted n bth sides f the screw jack husing. Brnze guides are mstly recmmended in case n ther external guiding system is used. Ordering cde: G-G If the screw jack needs a prtective tube in additin t the brnze guides, it is pssible t have a cmbinatin f the tw accessries. Ordering cde: G-TG In applicatins with trunnin munt SC, brnze guides are abslutely necessary! 2 Stp nut The stp nut prevents the ball screw travelling ut f the screw jack husing. It is a washer pinned at the screw end (ppsite the attachment side) that blcks the screw translatin when reaching the related stp. Unlike the standard washer, made f tecnplimer, which prevents unscrewing, the stp nut is made f steel and can sustain the lad in case it shuld reach the related mechanical stp. The ball screw length is defined t have, during nrmal wrking cnditin, at its extreme (extended r retracted) psitin an extra-strke (safety strke) f at least 20 mm. If the stp nut reaches accidentally the related stp, it is necessary t check the screw jack s cmpnents t verify pssible damages. Ordering cde: SN 53

56 Screw Jacks with travelling ball screw (Md.A) 2.14 Accessries Prtective tube The prtective tube is screwed in the cver and prtects the ball screw frm damages and/r envirnment pllutin such as dust, water, etc. Furthermre, it allws the fitting f ther ptins such as limit switches and/r anti-turn device. The prtective tube is in aluminium ally r in steel in case f screw jack fitted with anti-turn device. Ordering cde: T 2 Anti-turn device The anti-turn device is necessary when the lad t be lifted is nt guided and therefre the ball screw rtatin is nt prevented, r in case the applicatin des nt prperly allw the screw reactin t permit the translatin. Functining: a steel key is fitted alng the prtective tube, and a keyed brnze washer is fixed at the end f the ball screw; this prevents the screw rtatin and frces the screw translatin. Up t screw jack size 50 (ball screw BS 40 P h ) included, the anti-turn device has nly ne key; frm size 100 (ball screw BS 50 P h ) n, it has tw keys munted n ppsite sides. The brnze washer als acts as a stp nut against ball screw unthreading. Ordering cde: AR Fixing attachments in stainless steel Fr applicatins in particular envirnment cnditins r in fd industry, n request screw jacks can be supplied with end attachment in stainless steel. Available standard steels are AISI 303, AISI 304, n request AISI 316. Ordering cde: P inx stainless steel flange end P, fr screw jacks Md.A Ordering cde: TF inx stainless steel rd end TF, fr screw jacks Md.A 54

57 Screw Jacks with travelling ball screw (Md.A) 2.14 Accessries Magnetic limit switches Available fr screw jacks size 5, 10 r 25 nly. Nt supplied with anti-turn device AR. Functining: magnetic limit switches are sensrs with reed cntact and are fitted with a clamp n the aluminium, r ther nn-magnetic metal, prtective tube T. They are activated by the magnetic field generated by a magnetic ring fitted n the travelling ball screw end. In case the screw jack is nt stpped after the sensr activatin, withut magnetic field the sensr restres the riginal state. In case the limit switches are used t stp the screw jack, we recmmend t prvide an electric cnnectin in rder t latch the signal and prevent the screw jack frm mving again in the same directin. Screw jacks with magnetic limit switches are supplied with tw sensrs fr the ball screw extreme psitins. On request, extra switches fr intermediate psitins can be supplied. The psitin f the sensrs alng the tube is adjustable. Technical details: 2 Cntact: nrmally nrmally CLOSED (NC) OPEN (NO) Vltage range: ( ) Vdc / ( ) Vac Switching capacity: 20 W / 20 VA Max. switching current at 25 C: 300 ma (resistive lad) Max. inductive lad: 3 W (simple cil) Wires: mm 2 Cable length: 2 m Ordering cde: FCM-NC Ordering cde: FCM-NO fr screw jacks with nrmally clsed magnetic switches FCM fr screw jacks with nrmally pen magnetic switches FCM 55

58 Screw Jacks with travelling ball screw (Md.A) 2.14 Accessries Inductive prximity limit switches Functining: the limit switches are prximity sensrs fixed n the prtective tube and activated by the metallic ring placed n the ball screw end. In case the screw jack is nt stpped after the sensr activatin, when the metallic ring mves away the sensr restres the riginal state (is deactivated). In case the limit switches are used t stp the screw jack, we recmmend t prvide an electric cnnectin in rder t latch the signal and t prevent the screw jack frm mving again in the same directin. Screw jacks with prximity limit switches are supplied with tw sensrs fr the ball screw extreme psitins. Extra switches fr intermediate psitins available n request. 2 Standard executin: nt adjustable FCP On request: adjustable FCP By standard executin, the sensrs psitin alng the tube is nt adjustable and it is nt angularly fixed. On request, it can be supplied with angular psitin at custmer s requirement. Executin with axial adjustment f the sensrs psitin available n request. Technical details: Type: inductive, PNP Cntact: nrmally CLOSED (NC) Vltage range: ( ) Vdc Max. utput current: 200 ma Vltage drp (activated sensr): < 1.8 V Wires: mm 2 Cable length: 2 m Ordering cde: FCP FCPR (standard, nt adjustable) (n request, adjustable) 56

59 2.14 Accessries Trunnin munt Screw Jacks with travelling ball screw (Md.A) The trunnin munt is blted t either the tp r the bttm f the screw jack husing and allws the screw jack pivting arund the axis defined by the trunnin munt s lateral pins. NOTE: the attachment f the travelling ball screw must have a cylindrical hle with axes parallel t the trunnin munt pivts axis. In applicatins with trunnin munt, brnze guides are abslutely necessary! 2 MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 100 BS MA 150 BS MA 200 BS MA 350 BS A B &D &D H l S S S mass [kg] Ordering cde: SC (TF side) screw jacks with SC fixed n the screw attachment side Ordering cde: SC (ppsite TF side) screw jacks with SC fixed n side ppsite t the screw attachment Bellws In applicatins with particular envirnment cnditins, bellws prtect the screw frm cntaminants. The usually supplied bellws are circular, sewn (duble seam), in NYLON with a PVC utside and inside cating. Fr special applicatin requirements, different executins r materials can be supplied n request. The bellws cause changes t the retracted and extended lengths and screw jack verall dimensins stated in the catalgue. On request, rders will be acknwledged with a screw jack drawing giving exact dimensins. Usually, bellws are fitted between the screw jack husing and the ball screw attachment and the prtective tube is fitted n the ppsite side. In case the screw jack shall have a ball screw withut attachment, it is recmmended t rder it with a sketch f the required bellws attachment dimensins. Cdice: B 57

60 Screw Jacks with travelling ball screw (Md.A) 2.14 Accessries 2 Wrm wheel rtatin detectr Sme applicatins require the pssibility t verify if the wrm wheel rtates while the wrm shaft is mving in rder t get infrmatin abut the gd cnditin and functining f the wrm wheel tthing. A cylindrical element, machined in rder t have a crwn f empty and full spaces, is fixed t the wrm wheel creating a phnic wheel that, while rtating, activates a crrespnding prximity switches. As utput f such prximity switch, activated and deactivated by the alternatin f empty and full spaces, a train f impulses is generated which cnfirms the rtatin f the wrm wheel. On the cntrary, the cnstant utput signal f the prximity switch means the stp f the wrm wheel. The puls generatr can be munted n the screw end side r n the ppsite side. Safety nut The safety nut is a back-up feature t prevent the lad drpping in an uncntrlled manner in case f wrking nut balls failure. This can be caused by verlad r by achieving a critical wear level. The safety nut is an extensin t the main nut and changes the screw jack verall dimensins. It wrks with ne particular lad directin nly. Its psitin as regards the main nut is therefre cnditined by the lad directin: with pull lad the safety nut is n the ppsite side f the screw end, with push lad it is n the screw end side. The safety nut des nt have balls inside, but a helical thread that traces the ball truck n the screw. With a nt wrn ut main nut, the thread f the nut des nt tuch the screw; in case the balls f the main nut shuld fail, the safety nut will tuch the screw and sustain the lad, causing a slithering between the screw and the safety nut threads. The safety nut is made in steel and therefre, in case it is activated, it is then necessary t replace bth screw and main nut. Since the safety nut is a rtating cmpnent, if the screw jack is nt prvided with the prtective tube, a prtective device is supplied as standard. UPWARD munting, PULL lad UPWARD munting, PUSH lad boc MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 100 BS MA 150 BS MA 200 MA 350 BS BS a b &c Ordering cde: MSA push safety nut fr push lad Ordering cde: MSA pull safety nut fr pull lad a Oc DOWNWARD munting, PUSH lad DOWNWARD munting, PULL lad 58

61 Screw Jacks with travelling ball screw (Md.A) 2.14 Accessries ROTARY ENCODER Cde ENC.4 Hall-effect encder, incremental, bi-directinal Reslutin: 4 pulses per revlutin Output: PUSH-PULL 2 channels (A and B, phase difference 90 ) Input vltage: ( ) Vdc Max. cmmutable current (I ut ): 100 ma Max utput vltage drp: with lad cnnected t 0 and I ut = 100 ma: 4.6 V with lad cnnected t + V and I ut = 100 ma: 2 V Prtectin: against shrt circuit against input plarity inversin against any incrrect utput cnnectin Cable length: 1.3 m Prtectin: IP 55 2 Ordering cde: ENC.4 ROTARY ENCODER Cde EH53 Optical encder, incremental, bi-directinal Reslutin: 100 r 500 pulses per revlutin Output: PUSH-PULL 2 channels (A and B, phase difference 90 ) channel ZERO Input vltage: ( ) Vcc N-lad current: 100 ma Max. cmmutable current: 50 ma Cable length: 0.5 m Prtectin: IP 54 Ordering cde: EH 53 59

62 Screw Jacks with travelling ball screw (Md.A) 2.15 Ordering cde MA BS Series Md.A MA 50 BS Md.A RL Vers. 3 (80 B5) U-RH C TF B G MSA / G SC T AR FCP AC 3-phase brake mtr ple 230/400 V 50 Hz IP 55 Ins. F MA (screw jack MA BS Series) 2 Screw jack size page Ball screw BS diameter lead 4 Md.A (mdel: travelling screw) 5 Wrm gear rati RV, RN, RL page Input versin Vers.1, Vers.2, Vers.3, Vers.4, Vers.5, Vers.6 page 9 7 Screw jack munting and input shaft psitin U-RH, U-LH, D-RH, D-LH, H-RH, H-LH page 9 8 Screw jack strke length (ex.: C300 = 300 mm strke) 9 Accessries NF, P, TF, N B SC G SN T AR FCM-NC FCP-NC MSA push (pull) Screw end Bellws Trunnin munt Brnze guides Stp nut Prtective tube Anti-turn device Magnetic limit switches (nrmally clsed) Prximity limit switches (PNP, nrmally clsed) Safety nut fr push (r pull) lad Wrm wheel rtatin detectr page 48-49, 50 page 57 page 57 page 53 page 53 page 54 page 54 page 55 page 56 page 58 page Other accessries example: encder (with all relevant data) page Other specificatins example: lubricant fr lw temperature 12 Mtr data 13 Filled in selectin sheet page Applicatin layut 60

63 Screw Jacks with travelling ball screw (Md.A) UPWARD munting DOWNWARD munting P TF NF FCP FCM AR T B SN SC SC G G 2 Vers. Vers. G G SC SC SN B T AR FCM FCP NF TF P PUSH LOAD PULL LOAD MSA MSA PULL LOAD PUSH LOAD UPWARD munting DOWNWARD munting 61

64 Screw jacks with travelling ball nut (Md.B) 3.1 MA Series Md.B - STRUCTURAL ELEMENTS ball screw in quenched and tempered ally steel 11 - lw cver 2 - ball nut in case-hardened steel with flange accrding t 12 - raised cver; may als be used as a centring diameter DIN (available als with cylindrical flange), with grease nipple and end seals 3 - wrm with grund ZI invlute thread prfile (UNI 4760) in 13 - wrmwheel radial brnze guide fr higher stiffness and case-hardened steel better efficiency 4 - brnze wrm wheel with true invlute prfile ZI (UNI 4760) 14 - grub screw t prevent the threaded cver unscrewing 5 - cast irn supprt f the brnze wrm wheel rim 15 - lng-life synthetic il lubricated wrm gearbx (size 5 and 10: entire wrmwheel in brnze) 6 - ball screw fixed t the wrm wheel thrugh the 16 - radial lubricant seal cylindrical centring part and metric thread LEFT-HAND fr PUSH lad r RIGHT-HAND fr PULL lad 7 - lck nut with ppsite metric thread directin t ensure a 17 - O-ring safe ball screw fixing 8 - ball screw wrmwheel pins against unscrewing 18 - breather 9 - thrust ball bearing fr high lad capacity 19 - il level plug 10- gear bx 20 - il drain plug 62

65 Screw jacks with travelling ball nut (Md.B) 3.2 SJ Series Md.B - STRUCTURAL ELEMENTS ball screw in quenched and tempered ally steel 10 - gear bx 2 - ball nut in case-hardened steel with flange accrding t 11 - threaded cver; may als be used as a centring diameter DIN (available als with cylindrical flange), with grease nipple and end seals 3 - wrm with grund ZI invlute thread prfile (UNI 4760) in 12 - grub screw t prevent the threaded cver unscrewing case-hardened steel 4 - brnze wrm wheel with true invlute prfile ZI (UNI 4760) 13 - guide bush fr ball screw, may be used as a spigt diameter 5 - cast irn supprt f the brnze wrm wheel rim 14 - lng-life synthetic grease lubricated wrm gearbx (size : entire wrmwheel in brnze) 6 - ball screw fixed t the wrm wheel thrugh the cylindrical 15 - grease nipple centring part and metric thread LEFT-HAND fr PUSH lad r RIGHT-HAND fr PULL lad 7 - lck nut with ppsite metric thread directin t ensure a 16 - radial lubricant seal safe ball screw fixing 8 - ball screw wrmwheel pins against unscrewing 17 - O-ring 9 - thrust ball bearing fr high lad capacity 63

66 Screw jacks with travelling ball nut (Md.B) 3.3 HS Series - STRUCTURAL ELEMENTS ball screw in quenched and tempered ally steel 9 - gear bx 2 - ball nut in case-hardened steel with flange accrding t 10- square cvers with centring diameter fr screw jack DIN (available als with cylindrical flange), with psitining grease nipple and end seals 3 - slid input shaft with key (r flange and hllw shaft fr 11 - plastic guide bush mtr cupling) 4 - bevel gear in case-hardened and tempered steel 12 - lng-life synthetic il lubricated wrm gearbx and bearings 5 - utput hllw shaft in hardened and tempered steel 13 - O-ring 6 - key t transmit the trque t the utput shaft 14 - radial lubricant seal 7 - key t transmit the trque t the utput shaft 15 - NILOS seal which allws t create a chamber fr the lubricant f the upper bearing; used nly in case f vertical munting psitin 8 - thrust ball bearing fr high lad capacity

67 Screw jacks with travelling ball nut (Md.B) 3.4 Standard ball screw gearbx arrangements Diameter Lead MA 5 MA 10 MA 25 MA 50 MA MA 80 MA 150 MA 200 MA 350 SJ 5 SJ 10 SJ 25 SJ 50 SJ SJ 100 SJ 150 SJ 200 SJ 300 SJ 400 HS 10 HS 25 HS 50 HS HS 100 HS 150 HS 200 It is pssible t supply screw-gearbx arrangements different frm the standard nes. Fr mre infrmatin please cntact SERVOMECH. 3.5 Max. input pwer P max Fllwing tables shw the MAX. INPUT POWER P max [] t the gearbx at different speeds, calculated fr a gear life f hurs. Fr different life requirements, please cntact SERVOMECH. MA P max [] P max [] P max [] P max [] P max [] P max [] P max [] P max [] n 1 [rpm] RATIO RATIO RATIO RATIO RATIO RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL SJ P max [] P max [] P max [] P max [] P max [] P max [] P max [] P max [] P max [] n 1 [rpm] RATIO RATIO RATIO RATIO RATIO RATIO RATIO RATIO RATIO RH RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RL RV RL RV RL HS P max [] P max [] P max [] P max [] P max [] P max [] n 1 [rpm] RATIO RATIO RATIO RATIO RATIO RATIO R1 R1.5 R2 R3 R4 R1 R1.5 R2 R3 R4 R1 R1.5 R2 R3 R4 R1 R1.5 R2 R3 R4 R1 R1.5 R2 R3 R4 R1 R1.5 R2 R3 R

68 Screw jacks with travelling ball nut (Md.B) 3.6 TECHNICAL DATA MA BS Series Md.B MA 5 BS MA 10 BS MA 25 BS MA 50 BS Lad capacity [kn], (push - pull) Wrm gear centre distance [mm] Rati Gear bx material fast RV 1 : 4 (4 : 16) 1 : 5 (4 : 20) 1 : 6 (4 : 24) 1 : 7 (4 : 28) nrmal RN 1 : 16 (2 : 32) 1 : 20 1 : 18 (2 : 36) 1 : 14 (2 : 28) slw RL 1 : 24 1 : 25 1 : 24 1 : 28 casting in aluminium ally EN AC-AlSi10Mg T6 casting in spheridal graphite irn EN-GJS (UNI EN 1563) Mass f gear bx withut ball screw [kg] SJ BS Series Md.B SJ 5 BS SJ 10 BS SJ 25 BS SJ 50 BS SJ 100 BS Lad capacity [kn], (push - pull) Wrm gear centre distance [mm] Rati Gear bx material high RH 1 : 4 (5 : 20) fast RV 1 : 6.25 (4 : 25) 1 : 4 (4 : 16) 1 : 6 (4 : 24) 1 : 7 (4 : 28) 1 : 7 (4 : 28) nrmal RN 1 : 12.5 (2 : 25) 1 : 16 (2 : 32) 1 : 18 (2 : 36) 1 : 14 (2 : 28) 1 : 14 (2 : 28) slw RL 1 : 25 1 : 24 1 : 24 1 : 28 1 : 28 casting in aluminium ally EN AC-AlSi10Mg T6 casting in grey cast irn EN-GJL-250 (UNI EN 1561) Mass f gear bx withut ball screw [kg] Serie HS HS 10 HS 25 HS 50 Lad capacity [kn], (push - pull) Husing side dimensins [mm] Rati Gear bx material R1 1 : 1 1 : 1 1 : 1 R1.5 1 : : : 1.5 R2 1 : 2 1 : 2 1 : 2 R3 1 : 3 1 : 3 1 : 3 R4 1 : 4 1 : 4 1 : 4 casting in grey cast irn EN-GJL-250 (UNI EN 1561) Mass f gear bx withut ball screw [kg]

69 3.6 TECHNICAL DATA Screw jacks with travelling ball nut (Md.B) MA 80 BS MA 150 BS MA 200 BS MA 350 BS MA BS Series Md.B Lad capacity [kn], (push - pull) Wrm gear centre distance [mm] 1 : 7 (4 : 28) 1 : 8 (4 : 32) 1 : 8 (4 : 32) 3 : 32 RV fast 1 : 14 (2 : 28) 1 : 24 1 : 24 1 : 16 (2 : 32) RN nrmal 1 : 28 1 : 32 1 : 32 1 : 32 RL slw casting in spheridal graphite irn EN-GJS (UNI EN 1563) Gear bx material Mass f gear bx withut ball screw [kg] Rati SJ 150 BS SJ 200 BS SJ 250 BS SJ 300 BS SJ 400 BS SJ BS Series Md.B Lad capacity [kn], (push - pull) Wrm gear centre distance [mm] RH high 1 : 8 (4 : 32) 1 : 7 (4 : 28) 1 : 7 (4 : 28) 3 : 29 3 : 28 RV fast 1 : RN nrmal 1 : 32 1 : 28 1 : 28 1 : 30 1 : 29 RL slw casting in grey cast irn EN-GJL-250 (UNI EN 1561) welded steel S355 J2 (UNI EN 10025) Gear bx material Mass f gear bx withut ball screw [kg] Rati 3 HS 100 HS 150 HS 200 Serie HS Lad capacity [kn], (push - pull) Husing side dimensins [mm] 1 : 1 1 : 1 1 : 1 R1 1 : : : 1.5 R1.5 1 : 2 1 : 2 1 : 2 R2 1 : 3 1 : 3 1 : 3 R3 1 : 4 1 : 4 1 : 4 R4 casting in grey cast irn EN-GJL-250 (UNI EN 1561) Gear bx material Mass f gear bx withut ball screw [kg] Rati 67

70 Screw jacks with travelling ball nut (Md.B) 3.7 Ball screws and nuts technical data Ball screws prduced with whirling prcess, accuracy grade IT 5 ( 1 ) 3 Ball screw Ball nut cde ( 2 Dynamic Static ) Ball n f starts n f circuits lad lad BS d 0 P h D w [mm] N p i C a [kn] C 0a [kn] BS 16 5 SFN-_ R BS SFN-_ R BS 20 5 SFN-_ R SFN-_ R BS SFN-_ R BS 25 5 SFN-_ R BS SFN-_ R BS 32 5 SFN-_ R BS SFN-_ R SFN-_ R SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R-F BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R ( 1 ) - ball screws with accuracy grade IT 3 can be supplied n request ( 2 ) - the nut cde in the table is incmplete; t cmplete it refer t Ch. 3.8 Ball nuts dimensins 68

71 Screw jacks with travelling ball nut (Md.B) 3.7 Ball screws and nuts technical data Rlled ball screws, accuracy grade IT 7 Ball screw Ball nut cde ( 2 Dynamic Static ) Ball n f starts n f circuits lad lad BS d 0 P h D w [mm] N p i C a [kn] C 0a [kn] BS 16 5 SFN-_ R BS SFN-_ R BS SFN-_ R BS 20 5 SFN-_ R SFN-_ R BS SFN-_ R BS SFN-_ R BS 25 5 SFN-_ R BS SFN-_ R BS SFN-_ R BS 32 5 SFN-_ R BS SFN-_ R SFN-_ R SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R ( 2 ) - the nut cde in the table is incmplete; t cmplete it refer t Ch. 3.8 Ball nuts dimensins 69

72 3 Screw jacks with travelling ball nut (Md.B) 3.8 Ball nut dimensins Nuts with flange accrding t DIN Ball screw Flange Nut cde Dimensins [mm] type BS d 0 P h D 1 D 4 D 5 D 6 D 7 L 1 L 3 L 7 L 8 L 10 L BS 16 5 SFN-D R M BS SFN-D R M BS SFN-D R M BS 20 5 SFN-D R M SFN-D R M BS SFN-D R M BS SFN-D R M BS 25 5 SFN-D R M BS SFN-D R M BS SFN-D R M BS 32 5 SFN-D R M SFN-D R M BS SFN-D R M SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R-F M BS SFN-D R M BS SFN-D R M BS SFN-D R M BS SFN-D R M D L 3 L /2 7 L 1 L js14 L h13 7 L 10 D 7 L 10 D h13 6 D 4 D h13 6 D 4 D 3 = D D g6 1 D 2 = D L h13 8 L h13 8 D H Flange type: 1 (d 0 < 40 mm) Flange type: 2 (d 0 40 mm)

73 Screw jacks with travelling ball nut (Md.B) 3.8 Ball nut dimensins Nuts with flange at SERVOMECH drawing SERVOMECH Ball screw Flange Nut cde Dimensins [mm] type BS d 0 P h D 1 D 4 D 5 D 6 D 7 L 1 L 3 L 7 L 10 L BS 16 5 SFN-S R M BS SFN-S R M BS SFN-S R M BS 20 5 SFN-S R M SFN-S R M BS SFN-S R M BS SFN-S R M BS 25 5 SFN-S R M BS SFN-S R M BS SFN-S R M BS 32 5 SFN-S R M SFN-S R M BS SFN-S R M SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R-F M BS SFN-S R M BS SFN-S R M BS SFN-S R M BS SFN-S R M L js14 D 7 L D 7 L 3 L /2 7 L 1 L h13 7 L 10 D h13 6 D 4 D h13 6 D 4 D 3 = D D g6 1 D 2 = D Flange type: 1 6 hles at 60 (d 0 < 40 mm) Flange type: 2 8 hles at 45 (d 0 40 mm) D H

74 Screw jacks with travelling ball nut (Md.B) 3.9 Ball nut life Ball screw diameter 16-20, accuracy grade IT 3 r IT 5 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] E A B C D Life in perfrmed strke [km] BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS C BS B BS E BS D 72

75 3.9 Ball nut life Screw jacks with travelling ball nut (Md.B) Ball screw diameter 16-20, accuracy grade IT 7 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] F A B C D E Life in perfrmed strke [km] G 3 BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS C BS F BS B BS E BS D BS G 73

76 Screw jacks with travelling ball nut (Md.B) 3.9 Ball nut life Ball screw diameter 25-32, accuracy grade IT 3 r IT 5 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] E D A B C Life in perfrmed strke [km] H G F BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS C BS B BS D BS G BS H BS F BS E 74

77 3.9 Ball nut life Screw jacks with travelling ball nut (Md.B) Ball screw diameter 25-32, accuracy grade IT 7 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] I 4 3 A B C D 2.5 E Life in perfrmed strke [km] H G F 3 BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS C BS D BS B BS E BS G BS H BS F BS I 75

78 Screw jacks with travelling ball nut (Md.B) 3.9 Ball nut life Ball screw diameter 40, accuracy grade IT 3 r IT 5, IT 7 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] E 6 A B C D Life in perfrmed strke [km] BALL SCREW Ball [mm] Accuracy grade N f starts N f circuits C a [kn] C 0a [kn] CURVE BS IT 3 r IT D IT C BS IT 3 r IT B IT A BS IT E 76

79 3.9 Ball nut life Screw jacks with travelling ball nut (Md.B) Ball screw diameter 50-63, accuracy grade IT 3 r IT 5 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] C A B Life in perfrmed strke [km] 3 BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS A BS B BS C 77

80 Screw jacks with travelling ball nut (Md.B) 3.9 Ball nut life Ball screw diameter 80, accuracy grade IT 3 r IT 5 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] D A B C Life in perfrmed strke [km] BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS B BS C BS D 78

81 3.9 Ball nut life Screw jacks with travelling ball nut (Md.B) Ball screw diameter , accuracy grade IT 3 r IT 5 Fllwing life diagrams refer t a cnstant applied lad, withut shcks and 90 % ball screw reliability. Fr different lad and/r reliability cnditins, please refer t ch Ball screw life calculatin n page 18 r cntact SERVOMECH. Lad [kn] C A B Life in perfrmed strke [km] 3 BALL SCREW Ball [mm] N f starts N f circuits C a [kn] C 0a [kn] CURVE BS A BS B BS C 79

82 Screw jacks with travelling ball nut (Md.B) 3.10 Ball screw direct efficiency Thanks t balls interpsed between the threaded shaft and nut, the frictin cefficient between balls and tracks is cnstant als in case f speed and lad variatins. This implies that als the ball screw efficiency can be cnsidered as cnstant by varying wrking cnditins and it is called theretical ball screw efficiency. The theretical efficiency f the ball screw depends n the gemetry f the ball tracks nly. Fr a cnservative calculatin, it is recmmended t apply a safety factr f 0.92 n the given efficiency in rder t cnsider als the dependence n lad and speed. The fllwing tables shw the theretical efficiency f all ball screws available fr screw jacks Md.B with rtating screw and travelling nut. d P h η BS 3.11 Wrm gear direct efficiency 3 η RID MA 5 MA 10 MA 25 MA 50 MA 80 MA 150 MA 200 MA 350 n 1 RATIO RATIO RATIO RATIO RATIO RATIO RATIO [rpm] RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL START η RID SJ 5 SJ 10 SJ 25 n 1 [rpm] SJ 50 SJ 100 SJ 150 SJ 200 SJ 250 SJ 300 SJ 400 RATIO RATIO RATIO RATIO RATIO RATIO RATIO RATIO RH RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RL RV RL RV RL START η RID Serie HS (all sizes, all ratis) RUNNING 0.90 STARTING

83 3.12 Static braking trque Screw jacks with travelling ball nut (Md.B) The braking trque is the necessary trque t keep the lad n the screw jack in a static psitin. The braking trque shall be applied with a brake n the screw jack input shaft. Braking trque calculatin The braking trque value is calculated as fllws: where: η BS - ball screw back-driving efficiency η RID - wrm gear back-driving efficiency F [kn] - lad applied n the screw jack P h [mm] - ball screw thread helix lead u - wrm gear rati (u > 1) The calculated T F value must be cmpared with the minimum braking trque threshld value, which must always be assured. The real braking trque value is therefre the highest ne f the tw values. T F eff = max (T F ; T F min ) Fllwing tables shw the T F min and the back-driving efficiency values. NOTE: where n value is stated, it means that the system is ideally self-lcking. Actually, due t hardly predictable external factrs, such as vibratins and shcks, it still can be pssible t have a nt self-lcking system and therefre, even in this case, it is necessary t apply a braking trque t sustain the lad in psitin, equal t the minimum T F min. d P h η BS 3 SJ 5 SJ 10 SJ 25 MA 5 MA 10 MA 25 MA 50 MA 80 MA 150 MA 200 MA 350 η RID RATIO RATIO RATIO RATIO RATIO RATIO RATIO RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL SJ 50 SJ 200 SJ 150 SJ 100 SJ 250 SJ 300 SJ 400 η RID RATIO RATIO RATIO RATIO RATIO RATIO RATIO RATIO RH RV RN RL RV RN RL RV RN RL RV RN RL RV RN RL RV RL RV RL RV RL Serie HS (all sizes, all ratis) η RID 0.90 T F min [] T F min [] T F min [] MA 5 MA 10 MA 25 MA 50 MA 80 MA 150 MA 200 MA SJ 5 SJ 10 SJ 25 SJ 50 SJ 100 SJ 150 SJ 200 SJ 250 SJ 300 SJ HS 10 HS 25 HS 50 HS 100 HS 150 HS

84 Screw jacks with travelling ball nut (Md.B) 3.13 Overall dimensins MA BS Series Md.B CYLINDRICAL END N Oe k7 p 20 + STROKE l P O V P A q O d j6 A/2 Z Q 3 O H g7 O d j6 q L l B F n C E OO S I U J1 J1s G 20 BALL SCREW w t O z H7 Vers.1: single input shaft l F1 Vers.2: duble input shaft Vers.3: flange and hllw shaft IEC Vers.4: flange and hllw shaft IEC + 2 nd shaft FLANGE J2s BELL-HOUSING J2 Vers.5: Vers.1 with bell-husing and cupling IEC Vers.6: Vers.2 with bell-husing and cupling IEC 82

85 3.13 Overall dimensins MA BS Series Md.B Screw jacks with travelling ball nut (Md.B) SIZE MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 80 BS MA 150 BS MA 200 BS MA 350 BS BALL SCREW BS P h BS 25 P h BS 32 P h BS 40 P h BS 50 P h BS 63 P h BS 80 P h BS 100 P h A B C E F F G H I L O Q S U V Z M5, depth 10 M5, depth 12 M5, depth 10 M6, depth 14 M6, depth 14 M6, depth 14 M10, depth 20 M10, depth 25 d e l n M5, depth 10 M6, depth 14 M8, depth 16 M8, depth 16 M8, depth 16 M8, depth 16 M10, depth 24 M12, depth 32 p q t M M M70 2 M90 2 M90 2 M110 2 M150 3 M180 3 w z J1 63 B5/B14: B5/B14: 69 63/71 B5: B5: B5: /90 B5: 120 J1s J2 J2s 63 B5: B14: 5 71 B5: B14: B5: B14: B5: B14: 71 B5: B14: B5: B14: 3 63 B5: 7 71 B5: B5: B14: B5: B14: B5: B14: 90 B5: B14: 7 80 B5: B5: 20 80/90 B5: 90 B5: B14: B5: B14: B5: B14: 100 B5: B14: 90 B5: B14: /112 B /112 B5: /112 B14: /112 B14: B5: B14: 100/112 B5: /112 B14: 100/112 B /112 B14: 90 B5: /112 B5: B5: 100/112 B5: B5: B5: B5: B5: B5: B5: 35 3 NOTE: fr ball nut dimensins, see ch. 3.8 Ball nuts dimensins n page 70 83

86 Screw jacks with travelling ball nut (Md.B) 3.13 Overall dimensins SJ BS Series Md.B, size CYLINDRICAL END N O e k7 20 Z O h g7 Q A Q l q A/2 O d j6 O h g7 3 F O O d j6 q L l E S J1 J2s G g OV 20 + STROKE BALL SCREW Vers.1: single input shaft B f l C I U Vers.2: duble input shaft THREADED FIXING HOLES Vers.3: flange and hllw shaft IEC Vers.4: flange and hllw shaft IEC + 2 nd shaft f1 F1 O O1 FLANGE E1 U1 J1s THROUGH FIXING HOLES BELL-HOUSING J2 Vers.5: Vers.1 with bell-husing and cupling IEC Vers.6: Vers.2 with bell-husing and cupling IEC 84

87 Screw jacks with travelling ball nut (Md.B) 3.13 Overall dimensins SJ BS Series Md.B, size SIZE BALL SCREW SJ 5 BS SJ 10 BS SJ 25 BS SJ 50 BS SJ 100 BS SJ 150 BS BS P h BS 25 P h BS 32 P h BS 40 P h BS 50 P h BS 63 P h A B C E E F F G I L O O1 M8, depth 14 9 M8, depth15 9 M10, depth M12, depth M20, depth M30, depth Q S U U V Z d e f f g h l q M4, depth M6, depth M8, depth M8, depth M8, depth M8, depth v z J1 56 B5/B14: B5/B14: 62 63/71 B5: B5: B5: /90 B5: 120 J1s M6, depth13 (4 hles at 90 ) 56 B5: B14: 9 J2 63 B5: 98 J2s 63 B5: 39 M5, depth10 (6 hles at 60 ) 63 B5: B14: 7 71 B5: B14: B5: B14: 15 M5, depth10 (6 hles at 60 ) 63 B5: B5: B5: B14: B5: B14: B5: B14: B5: B14: 29 M6, depth14 (6 hles at 60 ) 80 B5: B5: 20 80/90 B5: B5: B14: B5: B14: B5: B14: B5: B14: 21 M6, depth14 (6 hles at 60 ) 90 B5: B14: /112 B5: /112 B14: B5: B14: 100/112 B5: /112 B14: M6, depth14 (6 hles at 60 ) 100/112 B5: /112 B14: /112 B5: /112 B14: 3 NOTE: fr ball nut dimensins, see ch. 3.8 Ball nuts dimensins n page 70 85

88 Screw jacks with travelling ball nut (Md.B) 3.13 Overall dimensins SJ BS Series Md.B, size CYLINDRICAL END N Oe k7 g A 20 + STROKE v Oh g7 BALL SCREW Q l q O d j6 A/2 O h g7 3 f B F O O d j6 q l L l E S I J1 J2s C f1 F1 O O1 E1 Q Vers.1: single input shaft U Vers.2: duble input shaft THREADED FIXING HOLES Vers.3: flange and hllw shaft IEC Vers.4: flange and hllw shaft IEC + 2 nd shaft FLANGE U1 THROUGH FIXING HOLES BELL-HOUSING J1s J2 Vers.5: Vers.1 with bell-husing and cupling IEC Vers.6: Vers.2 with bell-husing and cupling IEC 86

89 Screw jacks with travelling ball nut (Md.B) 3.13 Overall dimensins SJ BS Series Md.B, size SIZE SJ 200 BS SJ 250 BS SJ 300 BS SJ 400 BS BALL SCREW BS 80 P h BS 100 P h BS 100 P h BS 120 P h A B C E E F F I L O O1 M30, depth M30, depth M30, depth M30, depth Q S U U d e f f g h l q M10, depth M10, depth M10, depth 22 12x8x55 M12, depth 28 16x10x60 v z J1 100/112 B5: /112 B5: 170 J1s 100/112 B5: /112 B5: 37 J2 132 B5: B5: 292 J2s 132 B5: B5: 62 3 NOTE: fr ball nut dimensins, see ch. 3.8 Ball nuts dimensins n page 70 87

90 Screw jacks with travelling ball nut (Md.B) 3.13 Overall dimensins HS Series CYLINDRICAL END N Oe k STROKE Oh g7 L11 L1 k1 OD1 j6 h1 3 q A q F f s B 20 g BALL SCREW Q B/2 Oh g7 L12 L2 k2 OD2 j6 h1 L10 J ODs ODc f7 OJ S: slid shaft, STANDARD diameter Q R: slid shaft, LARGER diameter MF: flange and hllw shaft IEC 88

91 3.13 Overall dimensins HS Series Screw jacks with travelling ball nut (Md.B) SIZE BALL SCREW HS 10 HS 25 HS 50 HS 100 HS 150 HS 200 BS 25 P h BS 32 P h BS 40 P h BS 50 P h BS 63 P h BS 80 P h A B D D Dc Ds F L L L L L Q e f g M6, depth M8, depth M12, depth M16, depth M18, depth M24, depth h h1 k1 M6, depth M8, depth M8, depth M10, depth M10, depth M12, depth k J J 71 B5: B5: B14: B5: B5: B14: B5: B14: B5: B14: B5: B14: B5: B14: B5: B5 135: B14: B5: B5 250: B14: B5: B5: B14: B5: B5: B14: B5: B5: B14: B5: B5: B14: B5: B5: B5: B5: NOTE: fr ball nut dimensins, see ch. 3.8 Ball nuts dimensins n page 70 89

92 Screw jacks with travelling ball nut (Md.B) 3.14 Electric mtrs fitting IEC electric mtrs MA BS Series MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 80 BS MA 150 BS MA 200 BS MA 350 BS 63 B5 F F F B14 F F 71 B5 B B F F F B14 B B F 80 B5 B F F F B14 B 90 B5 B B B F F B14 B B B B5 B B B F B14 B B B 132 B5 B B 160 B5 B 3 SJ BS Series SJ 5 BS SJ 10 BS SJ 25 BS SJ 50 BS SJ 100 BS SJ 150 BS SJ 200 BS SJ 250 BS 56 B5 F B14 F 63 B5 B F F B14 F 71 B5 B F F F B14 B F 80 B5 B F F F B14 B 90 B5 B B B F B14 B B B B5 B B B F F B14 B B B B B 132 B5 B B HS Series HS 10 HS 25 HS 50 HS 100 HS 150 HS B5 F 80 B5 F F B14 F F 90 B5 F F F B14 F F B5 F F F B14 F F 132 B5 F F B14 F 160 B5 F F - IEC flange with hllw shaft B - IEC bell-husing with cupling LINEARMECH Brushless Servmtrs Ball screw jacks can be equipped with Linearmech Brushless Servmtrs BM Series with metric flange dimensins, accrding t IEC 34-7, UNEL regulatins. Pssible fittings are described bellw: Servmtr Serie MA Serie SJ Serie HS BM 45 L IEC - SJ 5 BS BM 63 S IEC MA 5 BS, MA 10 BS SJ 10 BS BM 63 L IEC MA 5 BS, MA 10 BS, MA 25 BS SJ 10 BS, SJ 25 BS BM 82 S IEC MA 25 BS SJ 25 BS HS 10, HS 25 BM 82 L IEC MA 25 BS SJ 25 BS HS 10, HS 25 BM 102 S IEC MA 25 BS, MA 50 BS, MA 80 BS SJ 25 BS, SJ 50 BS, SJ 100 BS HS 25, HS 50 BM 102 L6 IEC MA 25 BS, MA 50 BS, MA 80 BS SJ 25 BS, SJ 50 BS, SJ 100 BS HS 25, HS 50 BM 102 L8 IEC MA 25 BS, MA 50 BS, MA 80 BS SJ 25 BS, SJ 50 BS, SJ 100 BS HS 25, HS 50 Fr technical data f servmtrs, please refer t ch.5 LINEARMECH serv mtrs n page 115. Flanges and bell-husings t specific drawing fr hydraulic mtrs r serv mtrs are available n request. 90

93 Screw jacks with travelling ball nut (Md.B) 3.15 Accessries Bellws In applicatins with particular envirnment cnditins, bellws prtect the screw frm cntaminants. The usually supplied bellws are circular, sewn (duble seam), in NYLON with a PVC utside and inside cating. Fr special applicatin requirements, different executins r materials can be supplied n request. The bellws cause changes t the retracted and extended lengths and screw jack verall dimensins stated in the catalgue. On request, rders will be acknwledged with a screw jack drawing giving exact dimensins. Usually, bellws are fitted n bth sides: between the screw jack husing and the ball nut and between the nut and the ball screw end. Anyway, sme applicatins require nly ne f the tw bellws. The attachments dimensins f the bellw between the screw jack husing and the nut are determined by the screw jack parts dimensins, where the bellw is fixed, while the attachments dimensins f the bellw between ball nut and screw end depend n the applicatin, because the bellw is directly in cntact with the applicatin s structure. The prtective bellw is available fr all screw jack series (MA BS, SJ BS, HS). Ordering cde: B 3 Y Y X X Lc Lc Lc X Y Y Y L screw thread STROKE X Lc Lc L screw thread STROKE X STROKE FLANGE COLLAR L screw thread STROKE L screw thread STROKE L screw thread STROKE - bellws attachment dimensins t be defined 91

94 Screw jacks with travelling ball nut (Md.B) 3.15 Accessries Wrm wheel rtatin detectr Available fr screw jacks MA BS and SJ BS Series nly (nt fr HS Series). Sme applicatins require the pssibility t verify if the wrm wheel rtates while the wrm shaft is mving in rder t get infrmatin abut the gd cnditin and functining f the wrm wheel tthing. A cylindrical element, machined in rder t have a crwn f empty and full spaces, is fixed t the wrm wheel creating a phnic wheel that, while rtating, activates a crrespnding prximity switches. As utput f such prximity switch, activated and deactivated by the alternatin f empty and full spaces, a train f impulses is generated which cnfirms the rtatin f the wrm wheel. On the cntrary, the cnstant utput signal f the prximity switch means the stp f the wrm wheel. 3 Safety nut The safety nut is a back-up feature t prevent the lad drpping in an uncntrlled manner in case f wrking nut balls failure. This can be caused by verlad r by achieving a critical wear level. The safety nut is an extensin t the main nut and changes the screw jack verall dimensins. It wrks with ne particular lad directin nly. Its psitin as regards the main nut is therefre cnditined by the lad directin. The safety nut des nt have balls inside, but a thread helix that traces the ball truck n the screw. With a nt wrn ut main nut, the thread f the nut des nt tuch the screw; in case the balls f the main nut shuld fail, the safety nut will tuch the screw and sustain the lad, causing a slithering between the screw and the safety nut threads. The safety nut is made in steel and therefre, in case it is activated, it is then necessary t replace bth screw and main nut. The safety nut is available fr all screw jack series (MA BS, SJ BS, HS). Ball screw diameter a b Ob a Ball screw diameter a b PULL lad 60 PUSH lad 60 Ordering cde: SBC push Ordering cde: SBC pull safety nut fr PUSH lad safety nut fr PULL lad a Ob 92

95 3.15 Accessries Screw jacks with travelling ball nut (Md.B) ROTARY ENCODER Cde ENC.4 Hall-effect encder, incremental, bi-directinal Reslutin: 4 pulses per revlutin Output: PUSH-PULL 2 channels (A and B, phase difference 90 ) Input vltage: ( ) Vdc Max. cmmutable current (I ut ): 100 ma Max utput vltage drp: with lad cnnected t 0 and I ut = 100 ma: 4.6 V with lad cnnected t + V and I ut = 100 ma: 2 V Prtectin: against shrt circuit against input plarity inversin against any incrrect utput cnnectin Cable length: 1.3 m Prtectin: IP 55 The encder ENC.4 is available fr all screw jack series (MA BS, SJ BS, HS). Ordering cde: ENC.4 ROTARY ENCODER Cde EH53 Optical encder, incremental, bi-directinal Reslutin: 100 r 500 pulses per revlutin Output: PUSH-PULL 2 channels (A and B, phase difference 90 ) channel ZERO Input vltage: ( ) Vcc N-lad current: 100 ma Max. cmmutable current: 50 ma Cable length: 0.5 m Prtectin: IP 54 3 The encder ENC.4 is available fr all screw jack series (MA BS, SJ BS, HS). Ordering cde: EH 53 93

96 Screw jacks with travelling ball nut (Md.B) 3.15 Accessries - MA BS Series Raised cver The husing f the screw jacks MA BS Md.B is enclsed inside tw threaded cvers, ne n the tp and ne n bttm. Screw jacks Md.B have always raised cver (CA) munted n the screw jack husing n the ppsite side f the acme screw, t prtect the rtating screw threaded end. The threaded cver n the screw side is always supplied as lw cver (CB) in standard executin, raised cver executin available n request. The raised cver CA with tleranced uter diameter acts as a centring diameter f the screw jack inside the machine structure. Ordering cde: CA - CA Trunnin munt 3 The trunnin munt is blted t either the tp r the bttm f the screw jack husing and allws the screw jack pivting arund the axis defined by the trunnin munt s lateral pins. NOTE: the part f the machine where the nut is fixed must have tw cylindrical pins (r hles) with axes parallel t the trunnin munt pivts axis. MA 5 BS MA 10 BS MA 25 BS MA 50 BS MA 80 BS MA 150 BS MA 200 BS MA 350 BS A B &D &D H l S S S mass [kg] Ordering cde: SC (screw side) screw jacks with SC fixed n the screw side Ordering cde: SC (ppsite screw side) screw jacks with SC fixed n ppsite screw side 94

97 Screw jacks with travelling ball nut (Md.B) 3.15 Accessries - SJ BS Series Screw jack husing fixing hles On the gear husing f screw jack SJ Series there are fixing hles, which can be threaded tapped hles (n bth husing fixing planes) r thrugh hles. The threaded hles psitin n the fixing plane can differ frm the thrugh hles psitin. Ordering cde: FF threaded hles (STANDARD) Ordering cde: FP thrugh hles (ON REQUEST) Trunnin munt The trunnin munt is blted t either the tp r the bttm f the screw jack husing and allws the screw jack pivting arund the axis defined by the trunnin munt s lateral pins. NOTE: the part f the machine where the nut is fixed must have tw cylindrical pins (r hles) with axes parallel t the trunnin munt pivts axis. 3 SJ 5 BS SJ 10 BS SJ 25 BS SJ 50 BS SJ 100 BS SJ 150 BS SJ 200 BS SJ 250 BS SJ 300 BS A B &D &D H l S S S mass [kg] Ordering cde: SC (screw side) screw jacks with SC fixed n the screw side Ordering cde: SC (ppsite screw side) screw jacks with SC fixed n ppsite screw side 95

98 Screw jacks with travelling ball nut (Md.B) 3.16 Ordering cde MA BS Series Md.B MA 50 BS Md.B RL Vers. 3 (80 B5) U-RH C300 IT 5 SFN-D R N B2 B1 CB / CA AC 3-phase brake mtr ple 230/400 V 50 Hz IP 55 Ins. F 14 1 MA (screw jack MA BS Series) 2 Screw jack size page 65, Ball screw BS diameter lead page Md.B (Mdel: travelling nut) 5 Wrm gear rati page Input versin Vers.1, Vers.2, Vers.3, Vers.4, Vers.5, Vers.6 page 9 7 Screw jack munting and input shaft psitin U-RH, U-LH, D-RH, D-LH, H-RH, H-LH page 9 8 Screw jack strke length (ex.: C300 = 300 mm strke) 9 Ball screw accuracy grade IT 3 r IT 5: whirled ball screw page 68 IT 7: rlled ball screw page Ball nut Nut cde page Accessries N B 1, B 2 CB, CA SBC pull (push) 96 SC Screw end Bellws Lw cver, raised cver Safety nut fr PULL (r PUSH) lad Wrm wheel rtatin detectr Trunnin munt page 82 page 91 page 94 page 92 page 92 page Other accessries example: encder (with all relevant data) page Other specificatins example: lubricant fr lw temperature 14 Mtr data 15 Filled in selectin sheet page Applicatin layut

99 Screw jacks with travelling ball nut (Md.B) UPWARD munting DOWNWARD munting SBC SBC CA Vers. PULL LOAD PUSH LOAD CB CA B1 B2 N SBC SBC N SBC SBC 3 B2 B1 CA CB PUSH LOAD PULL LOAD Vers. CA SBC SBC UPWARD munting DOWNWARD munting 97

100 Screw jacks with travelling ball nut (Md.B) 3.16 Ordering cde SJ BS Series Md.B SJ 50 BS Md.B RL Vers. 3 (80 B5) U-RH FF C300 IT 5 SFN-D R N B2 B Series AC 3-phase brake mtr ple 230/400 V 50 Hz IP 55 Ins. F 14 1 SJ (screw jack SJ BS Series) 2 Screw jack size page 65, Ball screw BS diameter lead page Md.B (Mdel: travelling nut) 5 Wrm gear rati page Input versin Vers.1, Vers.2, Vers.3, Vers.4, Vers.5, Vers.6 page 9 7 Screw jack munting and input shaft psitin U-RH, U-LH, D-RH, D-LH, H-RH, H-LH page 9 8 Gear bx fixing hles FF, FP page 84, 86 9 Screw jack strke length (ex.: C300 = 300 mm strke) 10 Ball screw accuracy grade IT 3 r 5: whirled ball screw page 68 IT 7: rlled ball screw page Ball nut Nut cde page Accessries N B 1, B 2 SBC pull (push) SC 98 Screw end Bellws Safety nut fr PULL (r PUSH) lad Trunnin munt Wrm wheel rtatin detectr page 84, 86 page 91 page 92 page 95 page Other accessries example: encder (with all relevant data) page Other specificatins example: lubricant fr lw temperature 15 Mtr data 16 Filled in selectin sheet page Applicatin layut

101 Screw jacks with travelling ball nut (Md.B) UPWARD munting DOWNWARD munting SBC SBC FF Vers. FP PULL LOAD B1 PUSH LOAD B2 N SBC N SBC SBC SBC 3 B2 B1 PUSH LOAD PULL LOAD FF Vers. FP SBC SBC UPWARD munting DOWNWARD munting 99

102 Screw jacks with travelling ball nut (Md.B) 3.16 Ordering cde HS Series HS 50 R2 BS S scheme 10 S 180 U lat B C300 IT 5 SFN-D R N B2 B AC 3-phase brake mtr ple 230/400 V 50 Hz IP 55 Ins. F 16 1 HS (screw jack HS Series) 2 Screw jack size page 65, Wrm gear rati R1, R1.5, R2, R3, R4 page Ball screw BS diameter lead page Main input S, R, MF, MA page 10 6 Kinematics scheme scheme 10, scheme 20 page 10 7 Additinal utput shaft (versin and psitin) S, R - 90, 180, 270 page 11 8 Screw jack munting psitin U, D, H page Screw jack fixing side side A - B - C - D - E - F page Screw jack strke length (ex.: C300 = 300 mm strke) 11 Ball screw accuracy grade IT 3 r 5: whirled ball screw page 68 IT 7: rlled ball screw page Ball nut Nut cde page Accessries N B 1, B 2 SBC pull (push) Screw end Bellws Safety nut fr PULL (r PUSH) lad page 88 page 91 page Other accessries example: encder (with all relevant data) page Other specificatins 16 Mtr data 17 Applicatin layut

103 Screw jacks with travelling ball nut (Md.B) UPWARD munting DOWNWARD munting SBC SBC PULL LOAD PUSH LOAD B1 B2 N SBC SBC N B2 SBC SBC 3 B1 PUSH LOAD PULL LOAD SBC SBC UPWARD munting DOWNWARD munting 101

104 General infrmatin Installatin Maintenance Lubricatin Transprt and handling Screw jacks with munted ball screw and all accessries can be ften difficult t handle because f their verall dimensins. Therefre, it is recmmended t handle the prducts with care during transprt and handling t avid damages n mechanical parts and/r fittings and als t prevent any risk fr the persnnel in charge f such peratins. Screw jack supprting pints shuld be previusly identified and used during transprt r t raise it by handling. In case f dubts, please cntact SERVOMECH fr supprt t prevent any pssible damage! Strage During strage, screw jacks shall be prtected against atmspheric agents thus t prevent dust r ther cntaminants t settle n ball screw and ther mving parts. In case f lng strage perids, fr example mre than 6 mnths, it is necessary t mve the input shafts t avid damaging f the ring seals. Furthermre, keep all nt painted parts prperly lubricated t prevent xidatin. Installatin The screw jack must be installed t wrk with push r pull axial lad nly, aviding lateral and radial lad. The crrect perpendicularity between ball screw axis and screw jack fixing side shall be checked carefully. The installatin f many screw jacks fr synchrnized lifting mvement requires particular attentin n tw different factrs: alignment f lad supprt pints: screw ends in case f travelling ball screw; brnze nut in case f travelling nut; use f cnnecting shafts and cuplings with high trsinal stiffness, t assure a perfect synchrnism f all lifting pints. Cmmissining and use Befre screw jack cmmissining and activatin, the fllwing checks must be carried ut: input shaft turning directin and related ball screw r nut linear mtin directin; strke end limit switches psitin cannt exceed the given limits; prper cnnectin f the mechanical transmissin and electric mtr (rtating directin and mtr supply vltage). Lubricatin and maintenance SERVOMECH screw jacks are supplied with lubricant type and quantity as indicated in the lubricants table. Fr the prper lubricatin f all screw jack cmpnents, please always specify in yur rder the screw jack munting psitin. Scheduled maintenance shall be carried ut n screw jacks depending n the relevant use and envirnment cnditins. Ball nuts must be peridically greased every 1000 wrking hurs, with lubricant quantity and type as stated in the table r an equivalent ne. Fr this peratin it is recmmended t use the specific re-lubricatin systems, cnsisting f grease nipples placed n the cver in case f screw jack Md.A (travelling screw), r directly n the nut in case f Md.B (travelling nut). Wrm gears are lng-life lubricated. Additinal lubricatin can be dne nly in case f verified lubricant leakage. In such a case, use the lubricant type indicated in the table r an equivalent ne. Fr further infrmatin abut installatin and maintenance, please refer t screw jacks Use and Maintenance Manual. 102

105 General infrmatin 4.1 Installatin Maintenance Lubricatin Lubricants fr screw jacks Mdel A (travelling screw): SCREW JACK GEARBOX NUT MA 5 BS 0.07 kg 10 g grease: AGIP Grease SLL 00 MA 10 BS 0.14 kg 15 g MA 25 BS 0.35 litre 25 g MA 50 BS 0.75 litre grease: 50 g MA 100 BS 1.5 litre LUBCON Thermplex ALN g il: AGIP BLASIA S 320 MA 150 BS 1.5 litre 200 g MA 200 BS 2.3 litre 250 g MA 350 BS 4 litre 400 g Lubricants fr screw jacks Mdel B (travelling nut): SCREW JACK GEARBOX NUT MA 5 BS 0.07 kg grease: AGIP Grease SLL 00 MA 10 BS 0.14 kg MA 25 BS 0.35 litre MA 50 BS 0.75 litre MA 80 BS 0.75 litre il: AGIP BLASIA S 320 MA 150 BS 1.5 litre MA 200 BS 2.3 litre MA 350 BS 4 litre SJ 5 BS 0.07 kg SJ 10 BS grease: AGIP Grease SM kg SJ 25 BS 0.23 kg SJ 50 BS 0.6 kg SJ 100 BS 0.5 kg SJ 150 BS 1.5 kg SJ 200 BS grease: AGIP Grease SLL 00 2 kg SJ 250 BS 2 kg SJ 300 BS 2 kg SJ 400 BS 3 kg HS litre HS litre HS litre il: AGIP BLASIA S 320 HS litre HS litre HS litre grease: LUBCON Thermplex ALN 1001 ( 1 ) ( 1 ) - fr the lubricant quantity necessary fr each type f nut, please refer t the table n page

106 General infrmatin 4.1 Installatin Maintenance Lubricatin Lubricants fr nuts f screw jacks Mdel B (travelling nut): Ball screw Nut cde number f circuits Lubricant quantity 4 BS d 0 P h i mass [g] vlume [cm 3 ] BS 16 5 SFN-_ R 3 2 BS SFN-_ R 3 2 BS SFN-_ R BS 20 5 SFN-_ R 3 2 SFN-_ R 5 3 BS SFN-_ R 3 3 BS SFN-_ R BS 25 5 SFN-_ R 3 3 BS SFN-_ R 3 4 BS SFN-_ R BS 32 5 SFN-_ R 4 4 SFN-_ R 3 11 BS SFN-_ R 4 12 SFN-_ R 5 13 BS SFN-_ R 3 12 BS SFN-_ R BS SFN-_ R 5 17 BS SFN-_ R 3 16 BS SFN-_ R BS SFN-_ R 5 26 BS SFN-_ R 4 27 BS SFN-_ R 5 34 BS SFN-_ R 4 60 BS SFN-_ R 6 48 BS SFN-_ R 5 81 BS SFN-_ R-F 5 56 BS SFN-_ R BS SFN-_ R BS SFN-_ R BS SFN-_ R

107 General infrmatin 4.2 Prduct label Every SERVOMECH screw jack is prvided with a nameplate, as shwn belw, which allws the unit identificatin and gives technical infrmatin abut the prduct. RATIO (2) PRODUCT CODE (1) STROKE LENGTH (3) ANZOLA EMILIA (BO) - ITALY Phne: Fax: DELIVERY DATE (5) LINEAR SPEED (4) SERIAL NUMBER (6) 1) Prduct cde: is an alphanumeric cde stating the series, size, rati, versin and strke limit device f the screw jack; 2) Rati: is the rati f the wrm gear; 3) Strke length: is the strke length in millimetres achievable by the actuatr; 4) Linear speed: is the linear speed in mm/sec fr screw jacks supplied with an electric mtr; if the mtr is nt supplied, this field is blank; 5) Delivery date: is the assembly date, expressed in week/year (ex.: 37/13 = week 37 / year 2013) which usually is als the delivery date; this date is cnsidered as warranty reference; 6) Serial number: is the number referred t the unit and assures the exact identificatin f the prduct, even after a lng time; it must be given as reference when rdering spare parts fr the unit

108 Servmech SELECTION INQUIRY screw jacks with travelling screw - data sheet - Page 1 f 2 Date: / / Cmpany: Address: Cntact persn: Psitin: Telephne: Fax: APPLICATION: SKETCH - APPLICATION LAYOUT plane view Example screw jacks... bevel gears... gearbx with mtr... screw jacks... 4 Side view f a single screw jack UPWARD MOUNTING DOWNWARD MOUNTING HORIZONTAL MOUNTING SERVOMECH S.p.A. & inf@servmech.it

109 Servmech SELECTION INQUIRY screw jacks with travelling screw - data sheet - Page 2 f 2 Date: / / NUMBER OF SCREW JACKS PER APPLICATION: STROKE REQUIRED: mm ACME SCREW LENGTH: mm TOTAL STATIC LOAD FOR APPLICATION: PULL: dan PUSH: dan MAX. STATIC LOAD FOR SINGLE SCREW JACK: PULL: dan PUSH: dan at STROKE mm SCREW JACK MOUNTING: Euler I (screw jack husing firmly fixed t the base free travelling acme screw end) Euler II (screw jack husing and travelling acme screw end fixed t pivting supprts) Euler III (screw jack husing firmly fixed t the base guided travelling acme screw end) SCREW JACK SUBJECTED TO VIBRATIONS NOT SUBJECTED TO VIBRATIONS TOTAL DYNAMIC LOAD FOR APPLICATION: PULL: dan PUSH: dan MAX. DYNAMIC LOAD FOR SINGLE SCREW JACK: PULL: dan PUSH: dan at STROKE mm LINEAR SPEED REQUIRED: mm/s mm/min m/min SINGLE STROKE PERFORMING TIME: s DUTY CYCLE: cycles / hur wrking hurs / day Ntes: LIFETIME REQUIRED: cycles clck hurs calendar days Ntes: ENVIRONMENT: TEMPERATURE C DUST HUMIDITY % POLLUTER Flange end Threaded end Rd end Bellws Guides Prtective tube 4 Stp nut Anti-turn device Strke end switches Safety nut Suggestins based n previus experiences f similar applicatin: Ntes: Number f screw jacks required: SERVOMECH S.p.A. & inf@servmech.it

110 Servmech SELECTION INQUIRY screw jacks with travelling nut - data sheet - Page 1 f 2 Date: / / Cmpany: Address: Cntact persn: Psitin: Telephne: Fax: APPLICATION: SKETCH - APPLICATION LAYOUT plane view Example screw jacks... bevel gears... gearbx with mtr... screw jacks... 4 Side view f a single screw jack UPWARD MOUNTING DOWNWARD MOUNTING HORIZONTAL MOUNTING SERVOMECH S.p.A. & inf@servmech.it

111 Servmech SELECTION INQUIRY screw jacks with travelling nut - data sheet - Page 2 f 2 Date: / / NUMBER OF SCREW JACKS PER APPLICATION: STROKE REQUIRED: mm ACME SCREW LENGTH: mm TOTAL STATIC LOAD FOR APPLICATION: PULL: dan PUSH: dan MAX. STATIC LOAD FOR SINGLE SCREW JACK: PULL: dan PUSH: dan at STROKE mm SCREW JACK MOUNTING: Euler I (screw jack husing firmly fixed t the base free travelling nut) Euler II (screw jack husing and travelling nut fixed t pivting supprts) Euler III (screw jack husing firmly fixed t the base guided travelling nut) SCREW JACK SUBJECTED TO VIBRATIONS NOT SUBJECTED TO VIBRATIONS TOTAL DYNAMIC LOAD FOR APPLICATION: PULL: dan PUSH: dan MAX. DYNAMIC LOAD FOR SINGLE SCREW JACK: PULL: dan PUSH: dan at STROKE mm LINEAR SPEED REQUIRED: mm/s mm/min m/min SINGLE STROKE PERFORMING TIME: s DUTY CYCLE: cycles / hur wrking hurs / day Ntes: LIFETIME REQUIRED: cycles clck hurs calendar days Ntes: ENVIRONMENT: TEMPERATURE C DUST HUMIDITY % POLLUTER Cylindrical end Bellws Bellws Safety nut 4 Suggestins based n previus experiences f similar applicatin: Ntes: Number f screw jacks required: SERVOMECH S.p.A. & inf@servmech.it

112 Servmech SCREW JACKS CHECK SHEET M-PRO-10 Page 1 f 2 Rev.2 PRODUCT: STROKE: ACME SCREW: BALL SCREW: ACCESSORIES: THREADED END NF FLANGE END P ROD END TF Mdel A Mdel B SAFETY NUT Mdel A: MSA Mdel B: SBC MOUNTING POSITION UPWARD U DOWNWARD D HORIZONTAL H 4 HORIZONTAL RIGHT-HAND H-RH UPWARD LEFT-HAND U-LH UPWARD RIGHT-HAND U-RH DOWNWARD LEFT-HAND D-LH DOWNWARD RIGHT-HAND D-RH HORIZONTAL LEFT-HAND H-LH SCREW JACKS MAIN DIMENSIONS RETRACTED JACK LENGTH: Lc = mm EXTENDED JACK LENGTH: La = mm MAX. WORKING STROKE (La - Lc): C = mm Servmech QMS PASSED Date: Signature:

113 INPUT SHAFT ROTATION - SCREW OR NUT LIFTING DIRECTION Mdel A Mdel B WARNING! 1. The values Lc (retracted jack length), La (extended jack length) and C (max. wrking strke) are the extreme permissible values. 2. Fr a crrect installatin and cmmissining f the screw jack see the Installatin, Use and Maintenance Manual. 3. The fllwing peratins must be dne BEFORE cmmissining: ensure that the breather plug is in the highest psitin respect t all ther plugs; lubricate acme r ball screw - nut; cnnect the strke limit device t the electric cntrl circuit f the screw jack r lifting system; check the lifting directin f the acme r ball screw (Mdel A) r nut (Mdel B). NOTE: 4 WORMGEAR LUBRICANT: SCREW - NUT LUBRICANT: SERVOMECH s.p.a. Via Mnald Calari, Anzla Emilia (BOLOGNA) ITALY Phne: Fax: inf@servmech.it

114 General infrmatin 4.6 Lifting systems SERVOMECH can supprt custmers by selecting the cmplete drive slutin fr screw jack systems: screw jack with flange fr mtr munting r with input shaft AC 3-phase r 1-phase electric mtr, DC electric mtrs, servmtrs inverter drives screw jacks with cntrl f axial psitin and linear speed bevel gears cnnecting transmissin shafts and cuplings general technical supprt fr: - screw jack selectin - life estimatin and calculatin - lay-ut system drawings Mtr-driven screw jacks (all series) Screw jack with plug-in IEC flange and hllw input shaft Screw jack with IEC bell-husing and cupling Screw jack with single input shaft cupling IEC B3 mtr 4 Screw jacks MA BS Series and SJ BS Series LAY-OUT: 2 pints lifting system Lay-ut: 2-1 Lay-ut: 2-2 Lay-ut: C Lay-ut:

115 General infrmatin 4.6 Lifting systems Screw jacks MA BS Series and SJ BS Series LAY-OUT: 3 pints lifting system Lay-ut: 3-1 Lay-ut: T Lay-ut: 3-2 Lay-ut: 3-3 Screw jacks MA BS Series and SJ BS Series LAY-OUT: 4 pints lifting system Lay-ut: H Lay-ut: U 4 Lay-ut: IN-LINE 113

116 General infrmatin 4.6 Lifting systems Screw jacks HS Series LAY-OUT: 2 pints lifting system Lay-ut: 2-1 Lay-ut: C Lay-ut: 2-2 Lay-ut: 2-3 Screw jacks HS Series LAY-OUT: 4 pints lifting system Lay-ut: H 4 Lay-ut: U Lay-ut: IN-LINE 114

117 Linearmech Brushless Servmtrs Ball screw jacks can be equipped with Linearmech Brushless Servmtrs BM Series. These servmtrs are prduced accrding t the latest state-f-the-art technlgy t imprve the specific trque and its linear ergatin. The high efficiency servmtrs BM Series are made using Segmented Laminatin Statr Technlgy. This technlgy can pack higher trque and pwer density int the same-sized mtr. It als allws the highest slt fill f the statr winding and the mtr t run cler, ptentially extending its peratinal life. Brushless servmtrs BM Series have been designed fr cntinuus wrking with natural cnvectin cling, withut external cling devices. The heat is mainly generated in the statr winding and it is dissipated thrugh the mtr external bdy thanks t the excellent mechanical and thermal cupling between these tw parts. 5.1 General data Mtr type: Cling: Munting: Magnets material: Insulatin class: brushless with sinusidal back-emf (synchrnus, permanent magnets) natural cnvectin IM B5 NeFeB F (verheating n windings 100 K with ambient temperature 40 C and safety margin 15 C) Prtectin: mtre bdy IP 54 mtre shaft IP 44 standard, IP 54 with lubricant seal Operating temperature: ( ) C Ambient strage temperature: ( ) C Humidity: max. 85 % withut cndensatin Operating altitude: < 1000 m ASL (fr higher altitude a degrading factr must be applied) Thermal prtectin: ptinal: PTC, PTO r KTY Mtr feedback: ptical encder, LINE-DRIVER, 2000 ppr (standard) reslver, 1 ple pairs 7 V rms, 10 khz (ptinal) BISS abslute multiturn encder (ptinal) Hlding brake: ptinal, 24 V dc pwer supply Balance quality grade: G 2.5 (standard) accrding t IEC Reference standards: IEC , IEC , IEC , IEC , IEC , ISO Marked: CE 5 115

118 Linearmech Brushless Servmtrs 5.2 Dimensins Linearmech servmtrs are available with metric flange dimensins accrding t IEC 34-7, UNEL regulatins (IEC B14 mtr flange and input shaft with key). qq L1 (withut brake) L2 (with hlding brake) Servmtr IEC Interface Cntinuus rated trque [] Stall trque [] Peak trque [] Q [mm] L1 [mm] L2 [mm] BM 45 L IEC 56 B BM 63 S IEC 63 B BM 63 L IEC 71 B BM 82 S IEC 80 B BM 82 L IEC 80 B BM 102 S IEC 90 B BM 102 L6 IEC 90 B BM 102 L8 IEC 90 B NOTE: mre infrmatins abut Servmtrs and drives see Brushless Servmtrs catalgue by Linearmech. 116

119 Linearmech Brushless Servmtrs 5.3 Terms and Definitins Term Symbl Unit f measure Definitin MOTOR Cntinuus rated trque T nm, 100K Trque supplied by the mtr fr an unlimited perid f time, at nminal speed (in thermal balance cnditin), withut exceeding the thermal limits f the relevant insulatin class. Stall trque T 0, 100K Trque supplied by the mtr fr an unlimited perid f time, with blcked rtr (in thermal balance cnditin), withut exceeding the thermal limits f the relevant insulatin class. Peak trque T p Trque generated at max. current (peak). The max. trque is pssible fr shrt perids f time t have a dynamic system behaviur (abrupt variatins f the perating cnditin). Exceeding this value causes the irreversible demagnetizatin f the rtr magnetic grup. Rated speed n nm rpm Speed perfrmed by the mtr fr an unlimited perid f time, withut exceeding the thermal limits f the relevant insulatin class, with trque as defined in the trque - speed curve shwn in the mtr specific diagram. Max. speed n max rpm Max. permissible rtating speed. It depends n centrifugal frce f rtating masses, rtr balance grade and bearings. Stall current I 0, 100K A Current (RMS value) phase - phase supplied t the mtr in rder t generate the trque in cnditins f blcked rtr (stall). Peak current I p A Current (RMS value) phase - phase supplied t the mtr in rder t generate the max. trque (peak). This current is limited by the mtr magnetic circuit: exceeding this value even fr a shrt time causes the irreversible demagnetizatin f the magnets. Vltage cnstant k E V/1000 rpm Vltage (RMS value) phase - phase prduced by perating mtr at rpm, at 20 C ambient temperature, with average windings temperature increment f 20 K. Trque cnstant k T /A Rati between trque with blcked rtr and current with blcked rtr (T 0, 100K / I 0, 100K ), with windings temperature increment f 100 K (insulatin class F). Thermal time cnstant t th min Time necessary t heat the cld mtr up t a temperature increase f K, with lad I 0, 100K. Winding resistance R ph Ω Electric resistance f phase - phase windings cnnected in Y circuit, at 20 C ambient temperature. Winding inductance L D mh Inductance f phase - phase windings cnnected in Y circuit. Electric time cnstant t el ms Rati between winding inductance and winding resistance (L D / R ph ). Mment f inertia (withut brake) J mtr kg m 2 Mment f inertia f mtr rtating elements. Mment f inertia (with brake) J mtr BR kg m 2 Mment f inertia f mtr and brake rtating elements. Permissible radial lad n mtr shaft Permissible axial lad n mtr shaft F R F N N N Cnstant lad radially applied n the centre f the mtr shaft, at rpm, fr nminal bearing service life f h. Cnstant lad axially applied n the mtr shaft, at rpm fr nminal bearing service life f h. BRAKE Supply vltage U BR V Vltage supplied t the brake excitatin cil t release the brake. Brake pwer P BR W Pwer cnsumptin f the brake excitatin cil. Rated braking trque T BR Hlding braking trque (it cannt be used t stp the mtr). Brake disengagement delay time t BR ms Reacting time frm the mment the rated pwer supply vltage is applied until the brake is cmpletely disengaged. Brake engagement delay time t BR ms Reacting time frm the mment the brake pwer supply is interrupted until the rated braking trque T BR is reached. NOTE: mre infrmatins abut Servmtrs and drives see Brushless Servmtrs catalgue by Linearmech

120 Linearmech Brushless Servmtrs 5.4 Technical Data Servmtr size BM 45 L IEC Drive rated vltage U nm [V] 24 V dc 48 V dc 230 V dc Stall trque T 0, 100K [] 0.35 Cntinuus rated trque T nm, 100K [] 0.32 Peak trque T p [] 1.05 Rated speed n nm [rpm] 3000 Max. speed n max [rpm] 4000 Number f ples 8 Stall current I 0, 100K [A] 7.4 ( 1 ) 3.8 ( 1 ) 1.25 Peak current I p [A] 24.4 ( 1 ) 12.5 ( 1 ) 3.95 Vltage cnstant k E [V/1000 rpm] 5 ( 1 ) 8.9 ( 1 ) 17.2 Trque cnstant k T [/A] ( 1 ) 0.09 ( 1 ) 0.28 Thermal time cnstant t th [min] 12 Winding resistance R ph [Ω] Winding inductance L D [mh] Electric time cnstant t el [ms] Mment f inertia (withut brake) J mtr [kg m 2 ] Mment f inertia (with brake) J mtr BR [kg m 2 ] Rated braking trque T BR [] 0.8 Brake supply vltage U BR [V] 24 V dc Brake pwer P BR [W] 12.8 Brake engagement delay time t BR [ms] 40 Brake disengagement delay time t -BR [ms] 7 Permissible radial lad n mtr shaft F R [N] 150 Permissible axial lad n mtr shaft F N [N] 50 Mass withut brake / with brake m [kg] 0.9 / 1.2 ( 1 ) - DC values refer t trapezidal cmmutatin + 5 % - 10 % NOTE: mre infrmatins abut Servmtrs and drives see Brushless Servmtrs catalgue by Linearmech

121 Linearmech Brushless Servmtrs 5.4 Technical data BM 63 S IEC BM 63 L IEC Servmtr size 24 V dc 48 V dc 230 V ac 24 V dc ( 2 ) 48 V dc 230 V ac [V] U nm Drive rated vltage [] T 0, 100K Stall trque [] T nm, 100K Cntinuus rated trque [] T p Peak trque [rpm] n nm Rated speed [rpm] n max Max. speed 8 8 Number f ples 15.9 ( 1 ) 7.7 ( 1 ) ( 1 ) 15.7 ( 1 ) 2.1 [A] I 0, 100K Stall current 50.8 ( 1 ) 25.8 ( 1 ) ( 1 ) 53 ( 1 ) 7.1 [A] I p Peak current 4.7 ( 1 ) 9.7 ( 1 ) ( 1 ) 9.4 ( 1 ) 43 [V/1000 rpm] k E Vltage cnstant ( 1 ) 0.09 ( 1 ) ( 1 ) ( 1 ) 0.71 [/A] k T Trque cnstant [min] t th Thermal time cnstant [Ω] R ph Winding resistance [mh] L D Winding inductance [ms] t el Electric time cnstant [kg m 2 ] J mtr Mment f inertia (withut brake) [kg m 2 ] J mtr BR Mment f inertia (with brake) [] T BR Rated braking trque + 5 % 24 V dc 24 V dc [V] U BR Brake supply vltage - 10 % + 5 % - 10 % [W] P BR Brake pwer [ms] t BR Brake engagement delay time 7 7 [ms] t -BR Brake disengagement delay time [N] F R Permissible radial lad n mtr shaft [N] F N Permissible axial lad n mtr shaft 1.25 / / 2.50 [kg] m Mass withut brake / with brake ( 1 ) - DC values refer t trapezidal cmmutatin ( 2 ) - nly intermittent service S3 25 % ver 10 min NOTE: mre infrmatins abut Servmtrs and drives see Brushless Servmtrs catalgue by Linearmech

122 Linearmech Brushless Servmtrs 5.4 Technical Data Servmtr size BM 82 S - 30 BM 82 L - 30 Drive rated vltage U nm [V] 230 V ac 400 V ac 230 V ac 400 V ac Stall trque T 0, 100K [] Cntinuus rated trque T nm, 100K [] Peak trque T p [] Rated speed n nm [rpm] Max. speed n max [rpm] Number f ples 8 8 Stall current I 0, 100K [A] Peak current I p [A] Vltage cnstant k E [V/1000 rpm] Trque cnstant k T [/A] Thermal time cnstant t th [min] Winding resistance R ph [Ω] Winding inductance L D [mh] Electric time cnstant t el [ms] Mment f inertia (withut brake) J mtr [kg m 2 ] Mment f inertia (with brake) J mtr BR [kg m 2 ] Rated braking trque T BR [] Brake supply vltage U BR [V] 24 V dc 24 V dc Brake pwer P BR [W] Brake engagement delay time t BR [ms] Brake disengagement delay time t -BR [ms] % - 10 % + 5 % - 10 % Permissible radial lad n mtr shaft F R [N] Permissible axial lad n mtr shaft F N [N] Mass withut brake / with brake m [kg] 2.0 / / 5.0 NOTE: mre infrmatins abut Servmtrs and drives see Brushless Servmtrs catalgue by Linearmech

123 Linearmech Brushless Servmtrs 5.4 Technical Data BM 102 S - 30 BM 102 L6-30 BM 102 L8-30 Servmtr size 230 V ac 400 V ac 230 V ac 400 V ac 230 V ac 400 V ac [V] U nm Drive rated vltage [] T 0, 100K Stall trque [] T nm, 100K Cntinuus rated trque [] T p Peak trque [rpm] n nm Rated speed [rpm] n max Max. speed Number f ples [A] I 0, 100K Stall current [A] I p Peak current [V/1000 rpm] k E Vltage cnstant [/A] k T Trque cnstant [min] t th Thermal time cnstant [Ω] R ph Winding resistance [mh] L D Winding inductance [ms] t el Electric time cnstant [kg m 2 ] J mtr Mment f inertia (withut brake) [kg m 2 ] J mtr BR Mment f inertia (with brake) + 5 % - 10 % [] T BR Rated braking trque + 5 % - 10 % + 5 % - 10 % 24 V dc 24 V dc 24 V dc [V] U BR Brake supply vltage [W] P BR Brake pwer [ms] t BR Brake engagement delay time [ms] t -BR Brake disengagement delay time [N] F R Permissible radial lad n mtr shaft [N] F N Permissible axial lad n mtr shaft 5.2 / / / 10.0 [kg] m Mass withut brake / with brake NOTE: mre infrmatins abut Servmtrs and drives see Brushless Servmtrs catalgue by Linearmech

124 SERVOMECH prduct range includes als: Linear actuatrs ATL Series with acme screw 7 sizes available lad capacity frm 4 kn t 80 kn linear speed frm 1.5 mm/s t 150 mm/s BSA Series with ball screw 7 sizes available lad capacity frm 4 kn t 60 kn linear speed frm 1.5 mm/s t 120 mm/s UAL Series with acme screw 5 sizes available lad capacity frm 2 kn t 15 kn linear speed frm 20 mm/s t 500 mm/s UBA Series with ball screw 5 sizes available lad capacity frm 2 kn t 15 kn linear speed frm 40 mm/s t 500 mm/s CLA Series with acme screw 3 sizes available lad capacity frm 8 kn t 25 kn linear speed frm 4 mm/s t 56 mm/s CLB Series with ball screw 3 sizes available lad capacity frm 6 kn t 25 kn linear speed frm 5 mm/s t 80 mm/s TMA Series with acme screw 5 sizes available lad capacity frm 15 kn t 200 kn linear speed frm 2 mm/s t 70 mm/s

125 SERVOMECH prduct range includes als: Acme screw jacks MA Series travelling screw (Md.A) MA Series travelling nut (Md.B) max. duty cycle: travelling screw: 40 % ver 10 min (30 % ver 1 hur) travelling nut: 30 % ver 10 min (20 % ver 1 hur) lad capacity frm 5 kn t 350 kn 8 sizes acme screw diameter frm 18 mm t 100 mm 1-, 2-, 3- r 4-start acme screw input speed up t rpm linear speed up t 300 mm/s wrm gearbx lubricated with synthetic il SJ Series travelling screw (Md.A) SJ Series travelling nut (Md.B) max. duty cycle: 30 % ver 10 min (20 % ver 1 hur) lad capacity frm 5 kn t kn 14 sizes acme screw diameter frm 18 mm t 160 mm 1- r 2-start acme screw input speed up t rpm linear speed up t 80 mm/s gearbx lubricatin with synthetic grease

126 SERVOMECH prduct range includes als: Bevel gearbxes Cubic frm husing with 6 machined sides Bevel gears made in ally steel, GLEASON spiral tth prfile 6 sizes Rati: 1 : 1, 1 : 1.5, 1 : 2, 1 : 3, 1 : 4 Max. input speed: rpm Standard lubricatin: grease

127 SERVOMECH prduct range includes als: Linear actuatrs ILA Series Acme screw r Ball screw linear actuatrs 6 sizes available lad capacity frm 15 kn t 200 kn input drive with direct cupling f mtr r geared mtr Ball screws and nuts Whirled ball screws, accuracy grade IT3 r IT5 Rlled ball screws, accuracy grade IT7 Backlash-free r preladed ball nuts Italian technlgy wn prductin entire in-huse manufacturing T receive a free cpy f the catalgue, please, cntact: inf@servmech.it

128 SERVOMECH prduct range includes als: Linear actuatrs Acme screw jacks Bevel gearbxes Ball screws and nuts T receive a free cpy f the catalgue, please, cntact: inf@servmech.it SERVOMECH s.p.a. Via M. Calari 1, Anzla dell Emilia (BOLOGNA) ITALY Phne: Fax: inf@servmech.it