252101272 pin for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part No.：252101272
Product Name：Hinge Pin
Applicable Model：XCMG ZL50G, ZL50GL Wheel Loader
Product Type：Loader oscillating rack hinge pin
Material：High strength alloy structural steel
Heat Treatment Process：Surface quenching treatment, tough core
Processing Technology：CNC turning, cylindrical grinding, magnetic particle crack inspection
Surface Finish：Precision ground and polished surface
Load Characteristic：Bear reciprocating impact load and alternating stress from bumpy ground
Installation Method：Shaft hole clearance fit + retaining lock assembly
Feature：High surface hardness, good core toughness, wear resistant, impact resistance, low friction, high dimensional precision
Weight：Consistent with original XCMG spare part
Application：Hinged rotary connection between oscillating rack and axle assembly for XCMG ZL50G / ZL50GL loader
Working Environment：Adapt to heavy load, impact, dusty and muddy mining & earthmoving construction sites

Applicable Models

Suitable for XCMG ZL50G and ZL50GL wheel loader, can directly replace original pin with the same part number.

Application Scenarios

Widely used in earthmoving, quarry, sand yard, road construction and mining heavy-duty working scenarios, acting as hinge pivot for front & rear oscillating rack of XCMG ZL50G / ZL50GL loader.

• Premium alloy structural steel raw material, composite property of hard surface and tough core, resist bending fracture under repeated heavy impact load.
• Surface quenching and cylindrical grinding process, high surface hardness, greatly reduce abrasive wear between pin and bushing and extend service life under cyclic load.
• Precision dimensional tolerance control, good matching clearance with original bushing, effectively prevent seizure and stuck phenomenon during reciprocating swing movement.
• Magnetic particle inspection for each finished pin, detect tiny surface cracks and avoid sudden pin fracture under heavy load on construction site.
• Strictly produced according to XCMG OEM drawings, outer diameter and length fully match ZL50G/ZL50GL, convenient for field disassembly and replacement.
• Optimized surface roughness treatment, reduce friction heat generation, protect mating bushing and lower overall maintenance cost of oscillating rack assembly.

FAQ 

Q: What is the main function of 252101272 pin?
A: It serves as hinge pivot between oscillating rack and axle assembly of XCMG ZL50G/ZL50GL loader, connects swing frame and drive axle, enables swing rotation of front/rear axle and transfers impact load during travelling and shoveling operation.

Q: When do I need to replace this pin?
A: Replace promptly if the pin has serious surface wear, obvious bending deformation, deep pitting corrosion, crack or severe seizure damage. Even small cracks found during inspection must be replaced in time to prevent fracture under heavy load.

Q: Can this pin install directly on ZL50G / ZL50GL loader?
A: Yes, manufactured strictly according to XCMG original drawing, outer diameter, length and locating structure fully match original assembly, no secondary cutting, grinding or welding modification required.

Q: What maintenance tips for the hinge pin?
A: Regularly check pin surface, lubrication status and retaining lock device. Keep grease lubrication of pin-bushing pair, avoid long-time overload operation. Periodically check wear loss and replenish grease on schedule to reduce abrasive wear.