251500117 spacer sleeve for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name：Spacer Sleeve
Part Number：251500117
Applicable Model：XCMG ZL50G, ZL50GL Wheel Loader
Main Material：Alloy structural steel
Processing Technology：Fine turning, quenching & tempering heat treatment
Surface Treatment：Precision grinding and anti-rust protection
Installation Method：Installed in hinge assembly, matched with pin and bushing
Processing Standard：OEM original drawing standard
Function：Adjust axial clearance, limit axial displacement, isolate structural parts
Feature：High compression resistance, good flatness, wear-resistant, high machining precision

- Produced strictly in accordance with OEM drawing specifications, inner diameter, outer diameter and width fully consistent with original parts, direct replacement without machining, shorten overhaul assembly time.
- Adopt alloy steel and tempering treatment, uniform hardness, strong compression resistance, effectively withstand repeated axial extrusion impact from working device.
- Precision turning and grinding process ensures good flatness, evenly distribute pressure, prevent local stress concentration and deformation.
- Accurate dimension tolerance, precisely control the axial gap of hinge joint, reduce component shaking and abnormal impact noise.
- Protect adjacent plates and bushings, avoid metal direct contact friction, extend service life of the whole hinge assembly.
- Simple installation, easy disassembly and inspection, convenient for matching replacement during overhaul of hinge wearing parts.

FAQ 

Q1: What accessories are used together with the spacer sleeve?
A1: It works together with hinge pin, bushing and retaining plate to form the complete hinge assembly of working device.

Q2: What signs indicate that the spacer sleeve needs replacement?
A2: Serious compression deformation, surface indentation, cracking, excessive thinning, obvious axial clearance increase and abnormal knocking noise of hinge joint.

Q3: What risks if the damaged spacer sleeve continues to be used?
A3: The axial gap of hinge assembly will become out of tolerance, parts shift axially during operation, resulting in bushing extrusion damage, accelerated pin wear, and cause unstable movement of working device.

Q4: What points should be paid attention to during installation?
A4: Clean the assembly contact surface; check matching pin and bushing for wear; place the spacer sleeve flat, ensure no skew; assemble lock parts after positioning.

Q5: How to maintain this spacer sleeve in daily operation?
A5: Regularly check hinge clearance; keep good lubrication of hinge point; avoid long-term overload and heavy impact load.

Q6: What are the main reasons for spacer sleeve damage?
A6: Overload extrusion, poor assembly flatness, sand and dust entering the gap, long-term cyclic axial impact and material fatigue.

Q7: Can deformed spacer sleeve be repaired by surfacing welding?
A7: Not recommended. Welding will change the heat treatment structure, cause uneven hardness, easy deformation again under extrusion, better replace new spacer sleeve directly.