DRIVING WHEEL ASSEMBLY FOR CAR

摘要

A wheel driven by a planetary reduction gear train has a disc brake pack acting between a fixed member and a rotating member for stopping or slowing the rotation of the wheel. The disc brake pack is mounted between the fixed and rotatable members before the planetary reduction gear set is assembled on the shaft making it possible to service the disc brake pack without removing the wheel from the shaft. In one embodiment, the sun and planet gears act as a pump for circulating cooling fluid to the disc brake pack.