252100392 bushing for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Bushing
Part No.: 252100392
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Material: Wear-resistant alloy
Function: Wear liner for boom hinge, isolate pin and boom bore, withstand alternating impact load
Matching parts: hinge pin, dust seal, grease nipple
Working condition: Combined bending and alternating impact load
Inspection Items: OD & ID inspection, length check, inner surface roughness test, hardness test, interference fit verification

Applicable Scenarios

Pressed into boom hinge holes and assembled with hinge pins to support lifting movement of front working device. Applied for earth excavation, aggregate loading and stockpiling. Suitable for quarry, mine, construction site and cargo terminal with heavy load and dusty environment.

- Manufactured to original specification, tight tolerance on OD and length, stable interference fit against loosening
- Tough alloy material, resist crushing and cracking under repeated heavy boom impact
- Internal grease groove retains lubricant, extend lubrication interval and reduce dry wear
- Precision ground inner bore, reduce pin scratch and hinge impact noise
- Cost-saving solution: replace bushing instead of expensive boom assembly
- Consistent dimension control for smooth pressing
- Fully compatible with ZL50G / ZL50GL boom pins, dust seals and lubrication parts
- Commonly stocked wearing part for service shops

FAQ 

Q：What symptoms occur when the bushing is worn?
A：Excessive clearance at boom hinge, obvious jitter during lifting and lowering, impact noise, unstable bucket posture and material spillage. In severe cases, the pin gets uneven wear and scratches, affecting lifting smoothness.

Q：Does boom jitter always mean this bushing is worn?
A：No. Check pin wear and damaged dust seal first, also check lift cylinder leakage and other hinge clearances. Confirm bushing wear only after eliminating those faults.

Q：Can slightly worn bushing be reused with shims?
A：Not recommended. Shims cause uneven load and risk of fracture under impact. New bushing is required for safe operation.

Q：Can bushings of different sizes be interchanged?
A：Not interchangeable. OD, ID and interference fit differ. Wrong fit may crack boom bore or lead to early failure. Always verify part number.

Q：What should be noted during bushing pressing?
A：Clean sand, burrs and old grease from bore. Press vertically to avoid damage to inner surface and grease groove. Align groove with oil passage, inject grease after assembly and test lifting stroke.

Q：What causes rapid bushing wear?
A：Overload, heavy rock impact, insufficient lubrication, sand ingress from failed dust seal and continued operation with excessive hinge play.