>> P.67
ChannelinggreasebehaviorpatternBallGreaseBallrotationdirectionToomuchgreaselostfromlubricationpartsLessinfluencefromviscousresistancewhenthefollowingballsremovegrease,loweringtorqueChurninggreasebehaviorpatternBallGreaseStoppedBallrotationdirectionGreaseisretainedinlubricationpartsandreturnsthereGreaseremainsdifficulttoremoveevenwhenthefollowingballspassbyFig.14-1(4)Causesandcountermeasuresofmajortorque-relatedissuesIssueCauseCountermeasureRatedrotationisnotachievedStartupcurrentvalueistoohighToomuchgreaseUseofchurninggreaseFitistootightLoadamountistoohighReducethegreaseamountUsechannelinggreaseReexaminethefitReexaminetheloadamountRotationirregularityToomuchgreaseUseofgrease(alsoconsiderrotationspeed,temperature,requiredlife,etc.)ReducethegreaseamountUsechannelinggrease(alsoconsiderrotationspeed,temperature,requiredlife,etc.)GreaseamountandrotatingtorqueToomuchgreaseReducethegreaseamount(alsoconsiderrequiredlife,etc.)TemperatureandrotatingtorqueGreasebaseoilviscosityincreasesInsertgreasewithviscosity(alsoconsiderrequiredlife,etc.)lowbaseoilAsthecountermeasureslistedherewithregardtotorque-relatedphenomenaarecloselyinvolvedwithotheraspectsofrequiredperformance,consultMinebeaMitsumifordetails.67