玉軸受のトルクに及ぼす保持器の影響

－波形保持器と冠形樹脂保持器の違い－

抄録

As an effort to reduce energy loss, low torque rolling bearings are required. There are various types of rolling bearing cages with different materials and shapes. In this study, we investigate the influence of the cage on torque. Under oil lubrication and grease lubrication conditions, we measure torque of the wave-type and crown-type cage. Under grease lubrication conditions, the mass of grease is changed on basis of mass and space volume, torque is measured. Under oil lubrication condition, the crown-type cage exhibited lower torque. Under grease lubrication conditions, the wave-type cage exhibited lower torque when the amount of grease was low, and the crown-type cage exhibited lower torque when the amount of grease was high. Therefore, it can be said that it is appropriate to select wave-type cage when the mass of grease is small for high-speed rotation, and crown-type cage when the mass of grease is large for low-speed rotation and heavy load.