JSH Series — Hydraulic Rotary Drive Units
Short Description:
Built on JSC. Optimized for Slewing.The JSH Series Hydraulic Rotary Drives are developed directly from the proven JSC transmission platform, with the addition of an output pinion gear to engage slewing bearings. This compact, integrated solution combines hydraulic motor, planetary gearbox, multi-disc brake, distributor, and output pinion into a single robust package, purpose-built for rotary applications.
• Proven platform: based on JSC series hydraulic transmissions, ensuring high reliability and modular compatibility.
• Direct slewing output: integrated pinion gear for engaging slew rings, reducing installation complexity.
• Wide torque coverage: from ~0.8 kNm up to 200+ kNm, adaptable to excavators, cranes, and offshore machinery.
• High reduction ratios: planetary design delivers ratios from 1:4 to 1:500, balancing speed and torque.
• Heavy-duty bearing support: tapered roller bearings absorb radial + axial forces generated by slewing rings.
• Safety integrated: multi-disc brake and overload-protected distributor guarantee secure holding and controlled motion.
• Customizable: pinion modules, mounting interfaces, braking systems, and valve options tailored per application.
• Rated Output Torque: 0.8–200+ kNm
• Reduction Ratios: 1:4 – 1:500 (single/dual stage planetary)
• Working Pressure: 16–25 MPa
• Output Gear: pinion gear matched to slewing bearing modules
• Brake: integrated multi-disc hydraulic brake
• Control: optional balance/relief/anti-cavitation valves
• Mounting: customized flanges, corrosion-resistant sealing, sensor ports (optional)
• Excavator upper-structure slewing drives
• Truck & crawler cranes, concrete placing booms
• Rotary drilling rigs, piling rigs, geotechnical machinery
• Offshore deck cranes, wind turbine yaw drives
• Industrial slewing platforms and turntables