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English AbstractEnglish SummaryPower Transmission EngineeringRolling BearingsRoller BearingsRolling ElementTest StandLoad CapacityCarrying CapacityTest ResultsCylindrical RollerPlanetary GearPower TransmissionSpur GearOperating ConditionsTooth FlankFunctional OperationGear UnitHardened GearsPlanetary Gears