Ball bearing.

摘要

It has been found that improvement in cage-stability at such high speed [10<4> - 10<5> r.p.m.] is obtained when the cage pockets [5] are provided with specific shaped annular protruding parts [6] to which a ball [3 min ] during running will support. Due to this feature, forces [F1; mu F1] are introduced which are circumferential directed along the ball [3 min ]. In case of upcoming instability, forces [F2; mu F2] in radial direction between the cage pockets [5] and balls [3] are generated which urge the cage [4] to take in its stable position.