Lead. Shaft dia. 4 D109 D109 6 D109 8 D109

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1 Screws with Plastic s eatures he is manufacture from SUS3 or SUS33, which gives excellent corrosion resistance. Wie range of combination of ia. an are available. MRH incorporates a lubricating agent so it can be use without oiling. It is possible to obtain smooth movement with lubricant. Uses the same gothic arc grooves as Ball Screws, ensuring smooth transmission. MRH is stanar in stock, but material can be change to orer, base on the environmental conition. Selecting backlash free type, Axial play can be. Combination of nominal ia. & ia Note he numbers in each cell show pages in the catalogue. an are for back lash type, is for backlash free type. Unit mm ype Stanar proucts in stock MRH-A,B series KSS proucts A Polyamie type Resin with goo sliing properties is employe in the stanar MRH material. An because a lubricating agent is incorporate in the material, it can be use without oiling. Aitionally, other materials are available as options. Specifications Accuracy grae an Axial play Accuracy grae of KSS is base on JIS Ct. olerance on specifie travel is calculate by following formula. Axial play is.5 to.mm except Backlash free type. u olerance on specifie travel ep ep.2 mm u Useful travel mm Customize proucts MRH-BP2 series KSS proucts A Polyamie type Resin with goo sliing properties is employe. Backlash free construction mae possible with Double s an a Spring in between. Parts SUS3 or SUS33 MC nylon MC73H Quarant Polypenco Japan t. Customize proucts R-MSS Y series NN Engineering plastics Corp. proucts Corresponing to a wie range of environment an having corrosion resistance, heat resistance. High lea types 3 times as ia. are available. Note Please refer to p-d for material suitable for special environment. Note 2 If material other than the table is requeste, please inquire KSS Description of Run-out an location tolerance Description of Run-out an location tolerance for KSS is as follows. Each part of Run-out tolerance is base on JIS Ct of Ball Screws. E- E E- E- D D2

2 echnical Data hrea groove profile he threa grooves are of a gothic arc esign. his is basically the same as those use in our Ball Screws. Mechanical efficiency Mechanical efficiency of KSS % can be calculate by the following formula. he expecte Mechanical efficiency calculate from measurements is 2%-5%. Generally, as the increases, Mechanical efficiency tens to be high. Please use this number as a reference. Special proucts Regaring KSS, the stanar material of is MC nylon MC73H, but we also provie with the following materials. Please inquire KSS if rapezoial threa an ACME threa are neee. In case of bulk orer, it is possible to save the price to select material which is manufacture by injection moling. able D-2 Prouct performance comparison a % 2 a Axial loa N Screw m Rotational torque Nm Prouct MRH MRS MRE MRZ Classification Stanar Customize Operating environment Stanar environment Special environment V value limits on use an enurance ata V value limits on use or KSS, the prouct of Axial oa an relative velocity of Screw surface is efine as V, an this efinition is reference to check if it is usable or not. ig. D- is maximum V which can be operate without lubricants in case of using material MRH MC73H. Please use it as one of the reference. It is expecte to improve operational conition by applying lubricants. appearnce eatures Polyamie type Balance performance Polyether ether ketone type lame resistance, heat/water resistance ig. D- V value limits Axial loa N 2 MRH5 / ubricant None Evaluation Stable operational conitions were maintaine for the long term. Operation were goo, but some wears were seen on the s. Operations became ifficult in a relatively short time. Operations became ifficult in the short time. Other Goo sliing properties Goo electrical conuctivity oo hygiene, chemical resistance Mechanical strength Heat resistance 5 25 In case of V 5 N m/s, stable operations were maintaine. Operations uner V N m/s, maintaining stability was ifficult. Axial oa shoul be treate more carefully as to upper limits rather than relative spee. Wear resistance Chemical resistance m/sec Relative velocity of Screw surface Machinability ig. D-3 Evaluation each material superior usable relatively inferior Inferior Enurance test ata of Preloae proucts BP2 type mm = mm oa None Spee rpm ravel mm 2-way ubricant None Result After running km, operation were goo. Starting orque monitor see Diagram right Starting torque kgf cm Starting torque uring operation No. No.2 Machinability Mechanical strength Heat resistance MRH MRS MRE MRZ Distance km Chemical resistance Wear resistance D3 D

3 MRH-A,B series Stanar Proucts MRH-BP2 series Customize Proucts Dimension table number notation MRH 2 A R N2 moel Screw nominal iameter mm mm lange configuration A 2 holes Only proucts with mm B holes Screw threa length mm hrea irection Right-han only Screw total length mm Number of Example N2 means 2 s on a. here is no notation when. 2- X - X Dimension table number notation MRH 2 B P2 R moel Screw nominal iameter mm mm lange configuration B 2 flat faces holes Backlash free mark P2 Stanar Preloa Screw threa length mm hrea irection Right-han only Screw total length mm Coil spring - X D -.5 D -.5 Main external oa Screw Root ia. A type No. of threas B type D Df P.C.D X type Stanar Screw Root ia. No. of threas D Df P.C.D X Stanar MRH2A 2 5. MRHA MRH9A MRH2B 2. MRH5B 5. 2 MRHB.7 2 MRH2B 2.7 MRH2B 2. MRHB. 2 MRHB. 2 MRH5B 5. MRH2B 2.7 MRH22B 2. MRH2B. 2 MRH2B 2. 2 MRH22B 2. MRH23B A B MRH2BP MRHBP MRH9BP MRH2BP2 2. MRH5BP MRHBP2.7 2 MRH2BP2 2.7 MRH2BP2 2. MRHBP2. 2 MRHBP2. 2 MRH5BP2 5. MRH2BP2 2.7 MRH22BP2 2. MRH2BP2. 2 MRH2BP MRH22BP2 2. MRH23BP Note Aitional machining of Screw s shoul be performe by KSS. Note that accuracy cannot be guarantee if aitional machining is performe by someone other than KSS. Note 2 When aitional en-journal machining is performe by someone other than KSS, always remove the from the Screw. After machining, wash away any ebris on the Screw with clean refine kerosene or similar material. Note 3 he en iameter shoul be smaller than the Screw Root iameter, an the Screw threa length shoul be specifie in mm units. Note Only Right-han threa is available. Note 5 Screw s an s are not sol separately. Note Aitional machining of Screw s shoul be performe by KSS. Note that accuracy cannot be guarantee if aitional machining is performe by someone other than KSS. Note 2 he en iameter shoul be smaller than the Screw Root iameter, an the Screw threa length shoul be specifie in mm units. Note 3 Only Right-han threa is available. Note Screw s an s are not sol separately. Note 5 Please inquire regaring spring tension lower or higher than stanar is available. Note It is recommene that the main external loa is in the irection as inicate by the arrow in the igure above.

4 Caution ubrication MC Nylon which is stanar material of MRH series inclues oil, but epening on operating conition, abnormal noise or wearing at early stage might occur. In that case, surface treatment on shaft or grease applying are recommene. 2 Aitional en-journal machining Aitional machining of Screw shoul be performe by KSS. Note that accuracy cannot be guarantee if aitional en-journal machining is performe by someone other than KSS. Remove the from the Screw for aitional machining. After machining, wash away any ebris on the Screw with clean refine kerosene or similar material. or Backlash free type, it is ifficult to reprouce Preloa if is remove. We will o aitional machining when neee. 3 Hanling an use precaution. Do not subject to suen impact, as this is a precision part. Do not isassemble Backlash free type. When storing the proucts, please store in the original wrapping. Do not open the wrapping or tear the inner wrapping until reay to use. Dust may get insie the wrapper an may cause a ecline in functionality. If the proucts falls, loss of functionality ue to amage to component parts may result. Please sen proucts back to KSS so that we can check the proucts. here will be a charge for this service. his prouct has been esigne for normal use in temperatures uner. In case of exceeing, please ask KSS. are mechanical components that generates thrust towar the axis. It is not constructe to accept Raial oa Raial irection. his may result in wear an amage at an early stage. herefore, there shoul be no Raial oa on the Resin parts, take care to set up with other linear equipment for Raial oa. Coarse mounting accuracy such as misalignment of bracket an Support Bearing, perpenicularity of mounting face, will affect performance, so be careful with the mounting accuracy. Miniature Plastic Screws BEAREE proucts R-MSS Y Series BEAREE prouct is NN registere traemark. Specifications ype material eatures BEAREE AS5 PPS Resign Poly Phenylene Sulfie s an Stainless SUS3 s are employe. his Screw with low operating noise is able to be use as wie use. Wie use Because Screw surfaces are smooth an its lea is high, the back rive operation can be easy. ow operation noise compare with Ball Screws. Due to the s with low friction, the Screw efficiency is high. Single with lange BEAREE AS5 material Axial play Accuracy grae Cumulative lea error JIS : SUS3 5 m or less lea mm, 2mm m or less more than lea 2mm C JISB92.2/mm characteristics AS5 Specific gravity.53 Harness ensile strength Durometer 5Mpa Elongation 3% Bening strength Mpa Water absorption rate.5% inear Expansion coefficient. x 5 / Maximum temperature 2 D7 D

5 Dimension table number notation R MSS Y 2 R 2 echnical ata mm mm Permissible Axial oa N Permissible Revolution rpm ightening orque max N mm R-MSSY R-MSS2Y 2 7 Efficiency % R-MSSY 2 NN proucts Miniature Plastic Screws nominal iameter mm mm symbol BEAREE AS5 Screw threa length mm hrea irection Right-han only Screw total length mm R-MSS2Y R-MSS9Y R-MSSY 5 R-MSSY 2 3 R-MSS2Y R-MSS2Y X R-MSS2Y R-MSS2Y 2 R-MSS5Y 5 5 D R-MSS3Y R-MSS22Y 2 35 R-MSS2Y Number of threa R-MSSY R-MSS2Y 2 2 D Df P.C.D X R-MSS23Y 3 5 Criteria MSS2Y, verification of no remarkable wear after 2km running test uner N of Axial oa an 2,rpm of Spee. Other than that are obtaine by calculation. Efficiency is calculate by following formula base on measurement results of rotational torque M uner the Axial oa Q. R-MSSY 3.5 R-MSS2Y R-MSS9Y 9 R-MSSY 3. R-MSSY R-MSS2Y R-MSS2Y 2 R-MSS2Y 2 R-MSS2Y 2 R-MSS5Y R-MSS3Y 3 R-MSS22Y R-MSS2Y R-MSS23Y 3 R Q tan M tan 2 R Efficiency R Pitch circle raius Q Axial oa angle M Rotational torque Permissible Axial oa an Permissible Revolution are base on the test results uner the following conition. est machine NN Screw Durability test machine 2 Conition Room temperature, no lubricant, mm travel 2mm/ cycle or 2mm travel mm/cycle 3 Criteria No remarkable amage or wear on Screw surface after running test of 3 or 3 cycles uner the Permissible oa an Revolution in the table above. his number means when Plastic is fixe onto the Bracket. Note En-journal is not machine. Please inquire, if en-journal machining is require. D