Hub drive with integrated brake unit for excavators etc.

摘要

The brake unit has an operational brake (14) located radially inside a second parking brake (15). The first brake is formed to couple the drive shaft (3) to the hub carrier (13). The second brake couples the hub (10) to the carrier. The two brakes have a common brake stator carrier (18). The first brake is charged in closing direction by a pressurized fluid. The second brake is charged in closing direction by a spring, and in closing direction by a pressurized fluid.