Quality Precision Individuality

Transcription

1 Quality Precision Individuality R SPANN-ELEMENTE 2

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3 Technical Overview Note: All dimensions in mm, though inch sizes are produced daily. Wall thickness mm Size range: Key: Regular sizes Possible sizes Not possible Inner diameter mm Hardness: All types are offered according following details. For heavily loaded Bushes we recommend our Carburized surface treatment specification e.g. EG5/4x4 C PN3. All Bushes are through hardened. D2 L Standard With carburized surface Rockwell C scale HRC 5 54 HRC Specification: EG 5/4x4 C PN3 Vickers hardness Specification C Design Guidance: The average contact pressure governs bearing specification. This is calculated as follows: Finish Pentz Bushes are available in two preserving finishes. pm (admissible) > = pm = F D2 x L pm = average contact pressure N/mm 2 Oiled (standard) Dry lubricant Film (standard for ground Bushes) Description Reliable protection against corrosion MoS2-solid film lubricant extremely resistant pressure and temperature and improves runningin behaviour whilst reducing surface damage. Specification Further developments of our Bush programme are shown in the following pages, in particular, types PN5 & PN7. M F = Load (surface load) N D2 = Inner diameter of Bush L = Bush length Max. static surface load 6 N/mm 2 Max. dynamic surface load 6 8 N/mm 2 Max. temperature 15 C

4 The Company The Pentz Company was founded in 196, with the aims of producing Tension Bushes meet the ughest demands, through precision, Material quality and care in production. With a team of experienced specialists we have developed not only the internationally recognised standard parts but also many cusmer specific solutions, in particular the Close Joint Bush. With the latter point in mind we continually try ensure that cusmers design staff are involved in the early stages of the specification process. This helps guarantee the most cost effective and technologically superior part available. Through many patented innovations Pentz has developed new areas of application working with leading manufacturers in the fields of Engineering Construction, Agricultural Machinery, Conveying Systems and other industries where pressures and wear are problems be solved. Our own Cold Rolling Mill enables us satisfy production from unusual material thickness and further gives flexibility our manufacturing programme. Make use of our experience and competence. A warm welcome Pentz. 2

5 Contents: Inner Tension Bushes type PN3 (DIN 1498) pages. 4-7 Inner Tension Bushes type PN5 with Close Joint and Thrust Points pages Inner Tension Bushes type PN7 with Closed Joint pages Outer Tension Bushes type PN35 (DIN 1499) pages Tension Pins page. 19 Special requirements pages Assembly and Shaft detail pages

6 Inner Tension Bushes Type PN3 Inner Tension Bushes are slotted hollow cylinders with a variety of slot forms. They are manufactured from hardened and tempered spring steel strip giving elasticity and extended wear resistance. They are defined by slot type, diameters and length our facry standard PN3 (DIN 1498 refers). e.g. EG 5/4 x 4 PN3 for size requirements see page 1. 4

7 PN3 Areas of Application Pentz Inner Tension Bushes are used wherever there is exposure heavy duty working conditions and high surface forces. They are found in applications of slowly rotating machinery, wave movement operations, assemblies with short cycle reverse rotational functions, and of course they excel when dealing with shock loads! Such as: Construction machines Agricultural machines Conveying systems Machine building Industries Railway Industry Mining and Digging PN3 Advantages Easy Assembly No further treatment after assembly Rescuing expensive parts by re-boring and fitting a Bush Low repair costs Short down times Self locating in housing Manufacturing a hardness giving maximum life Minimum maintenance 5

8 Inner Tension Bushes Type PN3 This is type DIN 1498 standard Bush which cusm and practice allows us offer for a host of regular applications. Form E L Diameter D1 is oversize prior fitting and the pre-tension generated allows the Bush hold itself in position after assembly, without further mechanical constraint. The pre-tension is product of the wall thickness and Bush length. D2 D1 3 ±1 Form F with Innenfase f1 L f2 D2 D ± EG Straight slot, the Most usual form ES Inclined slot, favoured For rotary motion EP Arrow slot, again for rotary motion and longer length Bushes 6

9 Technical data Inner diameter lerance for Inner Tension Bushes PN3 Nominal size range of the inner Ø D2 Bush length (L) D 11 +,16 +,16 +,195 +,195 +,24 +,24 +,29 +,34 +,5 +,5 +,65 +,65 +,8 +,8 +,1 +,12 D 12 +,23 +,275 +,33 +,4 +,47 +,47 +,545 +,63 +,5 +,65 +,8 +,1 +,12 +,12 +,145 +,17 ISO lerances of inner Ø D2 D 13 +,56 +,66 +,66 +,775 +,89 +,1 +,12 +,12 +,145 +,17 Minimum oversize before assembly Length lerance Inner Ø D2 > 1 5 > 5 1 > 1 25 Inner Ø D2 > 1 5 > 5 1 > 1 25 Oversize Ø D1 in mm >,5 >,8 > 1, Length < ,5-2 > 1-1,5-1,5-2 Recommendations for housing lerances Housing > 1 18 > 18 3 > 3 5 > 5 8 > 8 12 > > ISO lerance H 8 H8 +,27 +,33 +,39 +,46 +,54 +,63 +,72 7

10 Inner Tension Bushes Type PN5 with Close Joint and Thrust Pads With the fitting of these Pentz Bushes, the slot edges come gether compressing the thrust pads and giving a higher surface loading in the housing, ensuring a more stable assembly and longer service life. 8

11 PN5 Areas of Application Pentz has developed this Bush meet growing demand for increased service intervals gether with longer working life. The close joint prevents contaminant entering the Bush and keeps the lubricant working longer. They have been tested for some years in: Construction machines Salvage operations Agricultural machines Conveying systems Building Industry Equipment Rail road Industry PN5 Advantages Security against axial movement even in worn housings Security against rsional movement Bushes can be ground upon request fine lerances High retention force in housing Cost effective housing manufacture up lerance H11 Easy assembly and removal with standard hydraulic fitment. Valuable reclaim worn housings More cost effective due longer service life Minimum maintenance 9

12 Inner Tension Bush PN5 cont d The number of thrust pads along the slot can be varied according Bush length, diameter and desired retention force. L The result of this design feature is a considerable extension of application possibilities. D2 D1 3 ±1 Auch in Form F (siehe PN3) lieferbar Deformation Thrust pads der produced Nocken in manufacturing beim process Einbau EGPN1 Inner Tension Bush with closed joint and thrust points EGPN2 Inner Tension Bush with closed joint and thrust points EGPN3 Inner Tension Bush with closed joint and thrust points 1 inner spiral groove, one side running-out in chamfer To D2 9mm, 3 inner inclined grooves not running-out 9 mm Dia upwards 4 similar grooves Optionally with 1 inner annular groove 1 outer annular groove 1 inner annular groove To D2 9mm Dia. 3 inclined grooves not running out From D2 9mm Dia. 4 similar grooves 3 or 4 drilled holes EGPN4 Inner Tension Bush with closed joint and thrust points EGPN5 Inner Tension Bush with closed joint and thrust points EGPNO Inner Tension Bush with closed joint and thrust points 1 1 outer groove 1 inner groove 2 holes through To D2 9mm, Dia. 3 inner inclined grooves running-out chamfer From D2 9mm Dia. 4 grooves similar Too cusmers own design

13 Technical data Inner diameter lerances for Tension Bush PN5 Nominal size of inner Ø D Bush length L D 11 +,16 +,16 +,195 +,195 +,24 +,24 +,29 +,34 +,5 +,5 +,65 +,65 +,8 +,8 +,1 +,12 D 12 +,23 +,275 +,33 +,4 +,47 +,47 +,545 +,63 +,5 +,65 +,8 +,1 +,12 +,12 +,145 +,17 D 13 +,56 +,66 +,66 +,775 +,89 +,1 +,12 +,12 +,145 +,17 *H 8 +,27 +,33 +,39 +,46 +,54 +,54 +,63 +,72 ISO lerances of inner Ø D2,,,,,,,, *F 8 +,43 +,53 +,64 +,76 +,9 +,9 +,16 +,122 +,16 +,2 +,25 +,3 +,36 +,36 +,43 +,5 *E 8 +,59 +,73 +,89 +,16 +,126 +,126 +,148 +,172 +,32 +,4 +,5 +,6 +,72 +,72 +,85 +,1 * Tolerances for ground Bushes or others your specification. To control the inner diameter note the sum of the lerances, housing plus tension Bush. Minimum oversize before assembly (pre-tension) Length lerances Inner Ø D2 > 1 5 > 5 1 > 1 25 Inner Ø D2 > 1 5 > 5 1 > 1 25 Oversize D1 in mm >,3 >,5 >,8 Length L < ,5-2 > 1-1,5-1,5-2 Recommendations for housing lerances Housing > 1 18 > 18 3 > 3 5 > 5 8 > 8 12 > > ISO lerance H 11 +,11 +,13 +,16 +,19 +,22 +,25 +,29 11

14 Inner Tension Bushes with Closed Joint PN7 Where extremely high retention forces are required from a Bush then the Pentz type PN7 with its Closed Joint will rise this exacting task. Upon assembly the slot edges come gether and exert increasing pressure upon the walls of the housing. 12

15 PN7 Applications Pentz Inner Tension Bushes of this type have been developed satisfy the need for better performance in the more exacting environments. Fields of application are: All the usual machinery previously referred Plus applications where service life is an extra consideration Plus e.g. hazardous applications where Bush may not be accessible as often as may be preferred PN7 Advantages No loss of lubricant Extra security in housing Bushes can be ground upon request offering closer lerances Reduced life costs Increased maintenance periods Production times as standard Bushes Easy assembly and removal with standard hydraulic fitment Patented design 13

16 Inner Tension Bush PN7 cont d Due the closed joint of this Bush even shock loadings are more easily dealt with. The Bushes are through hardened and tempered giving all the advantages of a solid Bush gether with self retention, press-in forces are agreed with the cusmer prior delivery. All Pentz variations of lubrication grooves and though holes are also available on this Bush type also. L D2 D1 3 ±1 Auch in Form F (siehe PN3) lieferbar Schlitz im eingebauten Zustand geschlossen EGP1 Inner Tension with closed joint 1 inner spiral groove, one side running-out in chamfer EGP2 Inner Tension with closed joint To D2 9mm, 3 inner inclined grooves not running-out 9mm Dia upwards 4 similar grooves Optionally with 1 inner annular groove EGP3 Inner Tension with closed joint 1 outer annular groove 1 inner annular groove To D2 9mm Dia. 3 inclined grooves not running out From D2 9mm Dia. 4 similar grooves 3 or 4 drilled holes EGP4 Inner Tension with closed joint 1 outer groove 1 inner groove 2 holes through EGP5 Inner Tension with closed joint To D2 9mm, Dia. 3 inner inclined grooves running-out chamfer From D2 9mm Dia. 4 grooves similar EGPO Inner Tension with closed joint Too cusmers own design 14

17 Technical data Inner diameter lerances for Tension Bushes PN7 Nominal size of inner Ø D Bush length L D 11 +,16 +,16 +,195 +,195 +,24 +,24 +,29 +,34 +,5 +,5 +,65 +,65 +,8 +,8 +,1 +,12 D 12 +,23 +,275 +,33 +,4 +,47 +,47 +,545 +,63 +,5 +,65 +,8 +,1 +,12 +,12 +,145 +,17 D 13 +,56 +,66 +,66 +,775 +,89 +,1 +,12 +,12 +,145 +,17 *H 8 +,27 +,33 +,39 +,46 +,54 +,54 +,63 +,72 ISO lerances of inner Ø D2,,,,,,,, *F 8 +,43 +,53 +,64 +,76 +,9 +,9 +,16 +,122 +,16 +,2 +,25 +,3 +,36 +,36 +,43 +,5 *E 8 +,59 +,73 +,89 +,16 +,126 +,126 +,148 +,172 +,32 +,4 +,5 +,6 +,72 +,72 +,85 +,1 * Tolerances for ground Bushes or others your specification. To control the inner diameter note the sum of the lerances, housing plus tension Bush. Minimum pre-tension sizes not applicable, as this Bush achieves its high retention force from the Closed Joint principle. Length lerances Inner Ø D2 > 1 5 > 5 1 > 1 25 Length L < ,5-2 > 1-1,5-1,5-2 Housing lerances for Bush type PN7 Housing > 1 18 > 18 3 > 3 5 > 5 8 > 8 12 > > ISO lerance H 8 +,27 +,33 +,39 +,46 +,54 +,63 +,72 15

18 Outer Tension Bushes Type PN35 Pentz Outer Tension Bushes are slotted hollow cylinders, made in the same way as Inner Bushes previously described. They are pressed on shafts achieve an increased hard wearing surface area. 16

19 PN35 Areas of Application Pentz Outer Tension Bushes are made in order increase the longevity of bearings subjected heavy duty working conditions. Easy replacement makes for increased life of assembly and minimum maintenance costs. Assembly is facilitated by the single inner chamfer. When used in conjunction with Inner Tension Bushes at least one of the Bushes must have slant or arrow shaped slots. Conveying machinery in harsh environments are a particular application. 17

20 Outer Tension Bushes Type PN35 The inner diameter of an Outer Tension Bush is smaller by a fixed value than the diameter of the shaft journal. Its retention force is generated by the Bush diameter, length and wall thickness. We offer facilities grind the outer diameter in order achieve closer lerances. L D2 D1 45 ±1 Sizes D2 ISO lerance D1 a ,47 -, ,51 -, ,56 -, ,57 -, ,64 -, ,66 -, ,73 -, ,76 -, ,86 -, ,92 -, ,98 -, ,12 -,66 Tolerance after assembly on shaft, D1 = h8. For more exacting applications lerance on D2 can be ground up lerance H1. Pre-tension D1 (before assembly) Length lerances Sizes D2 Diameter D , , , , ,5 Sizes D2 Length L < 1 > 1 > ,5 > 5 1-1,5-1,5 > AG Straight Slot For slow running And oscillating work AS Inclined Slot For regular rotary motion applications AP Arrow Slot As Type AS, but mainly used for longer lengths 18

21 Spring Tension Pins Pentz Spring Tension Pins are used wherever two or more parts must be joined gether. They can be used in the various functions of: location, hinge, sp, anchor and because they are made order a choice of material thicknesses can suit the ughest applications. Only the same high quality spring steel as recommended for this product, 1.526, is used in their construction. Special demands are regularly produced and pins 7 mm diameter and 26 mm long are within our capability. 19

22 Special solutions Our in-house Cold Rolling Mill enables us convert a special problem in a standard solution very quickly. All our technicians are sensitive the needs of economic answers cusmers enquiries, and it is often the case that we have actual experience in similar applications. Our Aim is a perfect solution every time! Fields of Expertise: Construction machinery Agricultural machinery Conveying equipment Heavy and light railway systems Machine rebuilding services 2

23 Inner Tension Bush with Closed Joint and Axial Collar Pads Fulfils the demands of a collar but more efficiently manufactured 3 axial collar pads secures against axial movement Traction Eye Bushes With added inner thrust pads (PN5) secure against axial movement Special Inner Tension Bush with grease grooves Inside and outside diameter ground Used as a sleeve in rail industry Inner Tension Bush with wave slot With special groove forms Plus additional holes Heavy Duty Tension Bush Used as a connection element in the rail industry ground outside diameter and shot peined 21

24 Materials Neu! 37MnB4 55 Si7 5 CrV PN3 X X X PN5 X X PN7 X X PN35 X X X Tension Pins X X Special requirements X X X 4 µm 37MnB4 is a modern boron-alloyed steel with outstanding resistance wear. The spring effect is similar 55Si7 and 5CrV4. Micro-section surface 37MnB4 Other materials upon request! Bush specification Bush Type Slot form Nomenclature Additions Number of Outer Inner Length Hardness Finish Inner Tension Straight slot (G) PN3 Ground grooves Ø Ø 44-48HRC Oiled Bush (E) Inclined slot (S) PN35 Inner or Outer 1,2,3 etc. D1 D2 L 5-54 HRC (C) Dry film Outer Tension Arrow slot (P) PN5 (PN)* dia. (G) Lubricant Bush (A) PN7 (P)* (M) E G P C M A S E G PN G C M * Straight slot form only The above table will enable you specify in detail all types of Pentz Bush. Pt.No. DE EP US Certificate ISO 91: 2 22

25 Assembly techniques Fitting and removal Bushes may be installed and removed by regularly available techniques, e.g. hammer and mandrel, bench press or portable hydraulic ram. For site work it is often possible arrange plug-in the machines hydraulic circuit. The Bush is entered chamfered end and with the slot orientated at 9 the direction of force. Inner Tension Bush Advantages: Easy assembly and removal Tolerance H8 is sufficient No cooling is necessary Secondary machining not needed Bushes maybe replaced on site Short down times Outer Tension Bush Bolts, Shafts and Journals Material Hardness Surface C45, 42CrMo4, CK15, 16MnCr5 As far as possible, choose HRC 6-8 higher than Bushes Finely turned or ground Tolerance e.g. f 8 or h 8 23

26 Änderungen vorbehalten Ausgabe 9/24 Michael Pentz GmbH & Co. Spannelemente KG Michael Pentz GmbH & Co. Spannelemente KG Illertissen/ Germany Postfach 246 Josef-Henle-Str Illertissen/ Germany +49 ()73 3/ ()73 3/ info@pentz-spannelemente.de SPANN-ELEMENTE R 1

27 UK supply Pentz offers Country specific distribution points, which helps the regular and consistent availability of parts and information. OUR U.K. POINT IS: K.N. Products Ltd Unit 49 Enfield Industrial Estate Redditch Worcestershire B97 6DE T: F: E: products.co.uk Please contact: Gary Ainley, Sales Manager products.co.uk