Wheel bearing unit for vehicle i.e. heavy passenger car, has synchronization rotary joints and two rows of rolling bodies, where ratio of distance between rolling bodies to teeth outer diameter of front teeth is in specific range

摘要

The bearing unit (10) has synchronization rotary joints (11) which are screwed with each other by front teeth (6) in a form-fit manner, and two rows of rolling bodies (2, 3). The ratio of distance (AB) between the rolling bodies to the teeth outer diameter (DV) of the front teeth is in the range of 0.15-0.6. The ratio of distance (AV) between a wheel bearing center and a tooth base level (ZBE) of the front teeth to the distance between the rolling bodies is in the range of 1.2-2.5. The unit is bolted with a joint bell (9) of the rotary joints.