KHK Stock Gears 3013
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268SpurGearsHelicalGearsInternalGearsRacksCP Racks& PinionsMiterGearsBevelGearsScrewGearsWormGear PairBevelGearboxesOtherProductsFinished Bore Miter GearsModule 1~8SMA・SMB・SMCSpecificationsPrecision gradeJIS B 1704 : 1978 grade 4Gear teethGleasonPressure angle20°Helix angle ―MaterialS45CHeat treatment Teeth induction hardenedTooth hardness50~60HRCABCDKEFGHLIJBTCatalog No.Gear ratioModuleNo. of teethShapeBoreHub dia.Pitch dia.Outside dia.Mounting distanceTotal lengthCrown to back lengthHub widthLength of boreAH7BCDEFGHISMA1-20SMB1-201m120BTBT810162021.412013.9510.7181212.07SMA1.5-20SMB1.5-20m1.520BTBK1012263032.123021.2416.06131919SMA2-20SMB2-20m220BKBK1415344042.833724.8918.41142222SMA2.5-20SMB2.5-20m2.520BKBK1820425053.544832.5424.77192929SMA3-20SMB3-20SMC3-20m320BKBKBK222520506064.245839.8430.1223353535SMA3.5-20SMB3.5-20m3.520BKBK2830607074.956544.1332.47254040SMA4-20SMB4-20SMC4-20m420BKBKBK303225648085.657550.7837.8327454545SMA5-20SMB5-20SMC5-20m520BKBKBK40303580100107.079060.3843.5430545454SMA6-20SMB6-20SMC6-20m620BKBKBK455040100120128.4810467.6748.2434606060SMA8-20m820BK60130160171.3112573.3350.663062SMA1-251m125BT10202526.412315.1611.21814SMA1.5-25m1.525BK123037.539.623422.2516.3111.519SMA2-25SMB2-25m225BKBK1815405052.834024.3316.411020SMA2.5-25SMB2.5-25m2.525BKBK20185062.566.045030.4120.5212.526SMA3-25SMB3-25m325BKBK3025607579.246037.8124.621532SMA3.5-25SMB3.5-25m3.525BKBK32287087.592.457043.2328.7217.537SMA4-25SMB4-25m425BKBK353080100105.668049.3232.832043SMA5-25m525BK50100125132.0710060.8241.042550SMA6-25m625BK55120150158.4812072.3249.243061SMA1-301m130BK12243031.412817.7113.711016SMA1.5-30m1.530BK15364547.124328.2421.561625SMA2-30SMB2-30m230BKBK2015456062.835029.4221.4112.525SMA2.5-30SMB2.5-30m2.530BKBK2520607578.546236.2826.271732SMA3-30SMB3-30m330BKBK3225709094.247545.4732.122040SMA3.5-30SMB3.5-30m3.530BKBK353090105109.958549.6634.972545SMA4-30SMB4-30m430BKBK4030100120125.669554.5237.832550SMA5-30m530BK55130150157.0712068.5648.543562[Caution on Product Characteristics]① Keyways are made according to JIS B1301 standards and Js 9 tolerances. For products with a tapped hole, a set screw is included as an accessory.② The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see page 253 for more details.③ Dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some dif-ferences will occur due to the corner chamfering of the gear tips.④ The keyway dimensions of items with "※"marks do not conform to JIS Standards.

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