Gearboxes, Drives & Winches
Hydraulic Slewing Drives
Compact motor-brake-gearbox units with pinion output for slewing rings
Complete slewing units that combine a hydraulic motor, valve block, multi-disc holding brake and multi-stage planetary gearbox in one housing. The output pinion engages the slewing ring of the upper structure directly, so the machine builder only adds hydraulic supply. Standard, high-speed and two-speed versions are available for cranes, excavators and drilling rigs.
Typical specifications
- Rated output torque
- 1,000 – 12,000 N·m
- Output speed
- 0 – 102 r/min
- Gear ratio
- 18.4 – 38.6
- Rated pressure
- 6 – 28 MPa
- Output pinion
- module 6 – 10 mm, 11 – 17 teeth
- Weight / machine class
- 50 – 220 kg; excavators 3.5 – 25 t
Ranges across the product family. Exact figures depend on the model.
Options
- Standard slewing drive with orbital motor and distributor valve
- High-speed swing drive for excavators
- Two-speed (variable) slewing drive for drilling rigs
- Custom pinion module, tooth count and valve functions
Applications
- Truck and mobile cranes
- Crawler and wheeled excavators
- Aerial work platforms
- Tracked vehicles
- Trenchless / horizontal drilling rigs
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