>> P.402
â– TrackCapacityTrackcapacityisdefinedastheloadthatcanbecon-tinuouslyappliedonaRollerFollowerplacedonasteelcamguidesurfacewithoutcausingdeformationandindentationonthecamguidesurfacewhentheouterringoftheRollerFollowermakescontactwiththemat-ingcamguidesurface(plane).ThetrackcapacitiesshowninTables8.1and8.2areapplicablewhenthehardnessofthematingcamguidesurfaceis40HRC(Tensilestrength1250N/mm2).Whenthehardnessofthematingcamguidesurfacediffersfrom40HRC,thetrackcapacityisobtainedbymultiplyingthevaluebythetrackcapacityfactorshowninTable9.Iflubricationbetweentheouterringandthematingcamguidesurfaceisinsufficient,seizureand/orwearmayoccurdependingontheapplication.Therefore,payattentiontolubricationandsurfaceroughnessofthematingcamguideespeciallyinthecaseofhigh-speedrotationsuchasforcammechanisms.RollerFollowerswithcylindricalouterringunit:NTrackcapacityIdentificationnumberTrackcapacityIdentificationnumber(2)TrackcapacityIdentificationnumberTrackcapacity-------NAST6ZZNAST8ZZNAST10ZZNAST12ZZNAST15ZZ35504490689073508030RNAST5(R)NAST6(R)NAST8(R)NAST10(R)NAST12(R)NAST15231035503980561059906550-10900Table8.1Trackcapacity(Metricseries)RollerFollowerswithcrownedouterringIdentificationnumber(1)CylindricalRollerFollowers-----SeparableRollerFollowersNon-separable(3)RollerFollowersRNAST5R(R)NAST6R(R)NAST8R(R)NAST10R(R)NAST12R(R)NAST15RNART5RNART6RNART8RNART10RNART12RNART15R-----115001370013600160002000022100221002640031600367003670040800442004970047000553004970060800104013301850247027103060391036604530453051905190658065808020802092209220108009990124001080014000117001280014100------NART30RNART25R----NART20RNART17R----(R)NAST25----(R)NAST20(R)NAST17NAST20ZZNAST17ZZ---------(R)NAST30R(R)NAST25R(R)NAST20R(R)NAST17RNURT15NURT15-1NURT17NURT17-1NURT20NURT20-1NURT25NURT25-1NURT30NURT30-1NURT35NURT35-1NURT40NURT40-1NURT45NURT45-1NURT50NURT50-1Notes(1)Alsoapplicabletothefullcomplementtype,shieldtype,andsealedtype.(3)AlsoapplicabletoC-LubeRollerFollowers.(2)Alsoapplicabletothesealedtype.NURT15RNURT15-1RNURT17RNURT17-1RNURT20RNURT20-1RNURT25RNURT25-1RNURT30RNURT30-1RNURT35RNURT35-1RNURT40RNURT40-1RNURT45RNURT45-1RNURT50RNURT50-1R(R)NAST3022100(R)NAST35R(R)NAST40R(R)NAST45R(R)NAST50R------NAST25ZZNAST30ZZNAST35ZZNAST40ZZNAST45ZZNAST50ZZ-----(R)NAST35-----(R)NAST4026900(R)NAST4528500(R)NAST5030200NART40RNART45R----NART35RNART50R-----2210025700303003220034000138001530025700-Table8.2Trackcapacity(Inchseries)unit:NTable9TrackcapacityfactorCrownedouterringCylindricalouterringIdentificationnumber(1)CRY12RCRY14RCRY16RCRY18RCRY20RCRY22RCRY24RCRY26RCRY28RCRY30RCRY32RCRY36RCRY40RCRY44RCRY48RCRY52RCRY56RCRY64RTrackcapacity8531050142016602160245034103820421046105690664089701020011400127001410016800Identificationnumber(1)CRY12CRY14CRY16CRY18CRY20CRY22CRY24CRY26CRY28CRY30CRY32CRY36CRY40CRY44CRY48CRY52CRY56CRY64Trackcapacity449052407270770010700118001540016700210002250030800347004490049400643006960087000113000Note(1)Alsoapplicabletothesealedtype.I89HardnessTensilestrengthTrackcapacityfactorHRCN/mm2CrownedouterringCylindricalouterring2025303538404244464850525456587608409501080118012501340143515301635176018802015215022900.220.310.450.650.851.001.231.521.852.272.803.464.215.136.260.370.460.580.750.891.001.151.321.511.731.992.292.612.973.39
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