252100503 knob ball for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Part Number：252100503
Product Name：Handle Knob
Applicable Model：XCMG ZL50G, ZL50GL Wheel Loader
Material：Rubber-plastic composite + embedded metal thread insert
Surface Feature：Anti-slip grain
Working Temperature：-20℃ ~ 60℃
Installation Method：Threaded screw connection
Inspection Items：Dimensional inspection, thread detection, pull-out resistance test, appearance inspection

Applicable Scenarios

It is used for the operating handle of the pilot control system of 5-ton wheel loader, suitable for earthwork, quarry, sand yard and other long-time continuous operation scenarios.

• Produced according to OEM standards, thread size and outer shape match the original handle, direct installation without modification.
• Built-in metal threaded bushing, strong connection strength, not easy to slip thread after repeated twisting.
• Soft and non-slip surface texture, comfortable grip, effectively prevent slipping when hands sweat.
• Good aging and oil resistance, not easy to harden and crack when contacting a small amount of hydraulic oil.
• Light weight, good vibration damping effect, reduce hand numbness caused by vibration.
• Simple installation, screw directly onto the handle rod, convenient for on-site replacement.
• Stable batch consistency, low cost, easy spare parts management.

FAQ 

Q: Can I use other types of handle knobs with different threads instead?
A: It is not recommended. Mismatched threads cannot be locked firmly and may fall off during operation, which will interfere with normal control of the boom and bucket and bring potential safety hazards.

Q: What are the common failure phenomena of the handle knob?
A: Common failures include surface cracking, rubber peeling, thread slipping and loose falling off. Long-term oil contamination, sunlight exposure and frequent twisting will accelerate these damages.

Q: What should be checked before installation?
A: Check whether the thread inside the knob is intact, check for cracks, aging and damage on the surface. Also clean the external thread of the handle lever to avoid sand and impurities scratching the internal thread.

Q: What should I pay attention to when screwing the handle knob?
A: Screw it gently, do not use excessive force, to avoid damaging the internal embedded thread. Stop tightening once it is fixed tightly; do not use wrenches or other tools for forced tightening.

Q: Will the loose handle knob affect the operation?
A: It will shake during manipulation, affect control feel, delay the operator’s response, and may fall off suddenly and bring hidden dangers.

Q: How to maintain the handle knob in daily use?
A: Regularly check whether it is loose, wipe the oil and dirt on the surface in time, avoid sharp scratching, and keep it away from long-term direct sunlight.