DRIVE DEVICE FOR DIAPHRAGM WALL CUTTER

The invention relates to a drive device for a diaphragm wall cutter (1), with a hydraulic motor (8), a gear unit (9), to which at least one cutting wheel (3) of the diaphragm wall cutter can be connected on the output side, and a drive shaft (12) which connects the hydraulic motor to the gear unit, wherein the drive shaft is mounted by way of at least one drive shaft bearing (25) which is arranged between the hydraulic motor and the gear unit, wherein the drive shaft bearing has a lubricant feed line (14) which is connected to a leakage discharge line of the hydraulic motor and/or to the hydraulic circuit in order to operate the hydraulic motor, and is configured to lubricate the drive shaft bearing with hydraulic oil. 本发明涉及一种用于沟槽壁切割机(1)的驱动装置，该驱动装置包括液压马达(8)、能够在输出侧与沟槽壁切割机的至少一个切割轮(3)连接的传动装置(9)以及将液压马达连接到传动装置的驱动轴(12)，其中，驱动轴由布置在液压马达和传动装置之间的至少一个驱动轴轴承(25)支撑，其中，该驱动轴轴承具有润滑剂入口(14)，该润滑剂入口连接到液压马达的泄露出口和/或用于操作液压马达的液压回路，并被设计为用润滑剂润滑驱动轴轴承。