ZJH42A Rotary Reducer
Delivers high torque output and minimal backlash for smooth 360-degree boom rotation and precise load holding.
Heavy Crane Transmission Series
High-torque planetary transmission drives custom-engineered for crane slewing, hoisting, and travel mechanisms. Built to withstand severe shock loads with 100% pre-delivery load testing.
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View Winch Series >>ZJQ36E Winch Reducer
Engineered with high-density planetary gearing and integrated multi-disc wet brakes for steady, smooth load hoisting.
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Planetary Gear Winch
Features a dynamic free-fall function designed for high-efficiency pile driving, duty-cycle clamshell, and rapid lowering tasks.
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Crawler Travel Reducer
Heavy-duty planetary travel drives built to withstand severe ground impact, mud, and continuous tracking torque.
Heavy-Duty Gearboxes for Crawler Cranes
Engineered for continuous heavy lifting and rough-terrain tracking. Features 20CrMnTi alloy planetary gearing and multi-disc hydraulic brakes to ensure steady 360° rotation and zero load drift.
Compact Reducers for Light & Medium Truck Cranes
High power-density planetary drives designed for compact mounting spaces. Offers fast line speeds, smooth hoisting control, and direct OEM mounting compatibility.
High-Torque Drives for Heavy-Duty Mobile Cranes
Built for high-tonnage mobile cranes operating under peak shock loads. Every unit undergoes 100% pre-delivery static torque and hydraulic seal leakage inspection to eliminate field downtime.
What Our Customers Say
Proven reliability in truck crane and crawler crane transmission applications worldwide.
Precision CNC Machining & Rigorous Quality Assurance
Powered by high-precision CNC machining centers and advanced gear grinding equipment, ZHIHE produces planetary drives with exceptional gear mesh accuracy. Every component is crafted from high-grade alloy steel (20CrMnTi) and validated via precision gear profile measuring devices for minimal noise, high transmission efficiency, and extended service life.
Application
Help
The crane gearbox converts hydraulic power into high torque to control smooth 360° boom rotation (slewing), precise load lifting (winch), and chassis tracking (travel), ensuring accurate and safe crane operation.
Selection depends on lifting capacity, output torque, gear ratio, mounting dimensions, and operating environment. Send us your motor specs or crane tonnage to receive free selection guidance within 12 hours.
Check gear oil levels regularly, perform timely oil changes, and monitor operating temperatures and hydraulic seal tightness to prevent thermal overload and ensure long-term stability.
Yes. We provide 100% custom solutions, including non-standard gear ratios, custom mounting flanges, and tailored shaft specs. 3D STEP drawings can be delivered within 24 hours for seamless OEM integration.
