Wälzlager in Tiefbohreinrichtung

摘要

The rolling bearing comprises a ball bearing unit (1) consisting of steel running rings with balls between them. Dirty flushing water (10)can get into the cavity between the rings. ceramic bearing balls alternate with smaller-diameter steel separating balls between the running rings. The separating balls are small enough not to take any bearing load even when the bearing balls are under maximum load.