XCMG 16-Ton Crane Slewing Reducer for QY16 Series
This product page is intended for slewing reducers used on selected XCMG 16-ton truck cranes, including QY16-series configurations. The reducer transfers hydraulic-motor input to controlled crane superstructure rotation. Different production batches can use different gear ratios, pinions and mounting interfaces, so the complete nameplate and machine identity are essential.
Best Identification Evidence
Full crane model, such as QY16K, QY16D or QY16C
Machine serial number and production year
Reducer manufacturer and complete nameplate code
XCMG material number, including any superseded reference
Hydraulic motor model and flange interface
Output pinion tooth count, outside diameter and tooth condition
Mounting-hole pattern, brake design and port direction
Application and Service Scenarios
This reducer may be considered during a verified repair for excessive mechanical backlash, damaged gears, abnormal reducer noise, seized rotation or oil leakage from the reducer housing. Slow or weak slewing can also result from low hydraulic pressure, motor wear, a dragging brake, valve faults or slewing-bearing resistance. Diagnose the complete system before ordering.
Workshop Inspection
Inspect the old lubricant for metal particles, check the output pinion and slewing-ring teeth, and measure backlash using the applicable service procedure. Examine motor splines, brake function, seals and mounting surfaces. Record the old reducer position and hose orientation before removal.
Installation and Commissioning
Clean the mating surfaces and hydraulic connections, use the specified fastener procedure, and fill only with the lubricant grade and quantity stated in the machine service information. Begin commissioning at low speed without load, rotate in both directions, and verify smooth motion, braking, temperature and leakage before returning the crane to service.
Frequently Asked Questions
Is every XCMG 16-ton crane fitted with the same reducer?
No. QY16 variants and production batches can have different reducer and motor combinations.
Can I identify it from the output pinion alone?
The pinion helps, but the complete nameplate, ratio, mounting and motor interface must also match.
Does weak slewing always mean the reducer is damaged?
No. Hydraulic pressure, control valves, the motor, brake and slewing bearing must be checked first.
What should I send for a quotation?
Provide photos of the reducer and crane nameplates, the complete assembly, motor interface, output pinion and mounting face.
Packing for Export
The unit should be drained or sealed as required, protected at the shaft and ports, immobilized in a reinforced crate and marked with the confirmed reducer reference to prevent identification errors.
