803044354 supporting ring for XCMG ZL50G/ZL50GL Wheel Loader

product parameters

Product Name: Support Ring
Part No.: 803044354
Applicable Model: XCMG ZL50G, ZL50GL Wheel Loader
Material: Wear-resistant composite engineering material
Function: Radial support for cylinder piston, guiding and anti-eccentric wear
Installation Position: Piston and guide sleeve of boom cylinder /bucket cylinder
Medium: Construction machinery hydraulic oil
Working Temperature: -30℃ ~ +120℃
Inspection Items: Dimension tolerance inspection, visual inspection, compression deformation test
Matching Parts: Seal ring, dust seal, O-ring

Applicable Scenarios

It is used for piston guiding inside boom cylinder and bucket cylinder of loader, bearing side force generated during shoveling and unloading. Widely used in working scenarios with frequent lifting and heavy impact load, such as mines, sand yards, construction sites and cargo yards.

• Original standard size with precise tolerance, easy installation and good fit for piston groove
• Self-lubricating wear-resistant material with low friction, reduce scratch risk of cylinder inner wall
• High extrusion resistance, not easy to crack, good for bearing side load and impact
• Oil and temperature resistant, not easy to swell or harden in hydraulic oil for long time
• Moderate hardness, will not abrade cylinder barrel excessively and protect cylinder
• Matching part for cylinder overhaul, replace together with seals to reduce rework
• Dedicated specification, good interchangeability, easy stock and shorten repair time

FAQ 

Q：What faults will be caused by worn support ring?
A：Worn support ring loses support, piston tilts and scratches cylinder wall, accompanied by increased internal leakage, weak lifting, jitter and abnormal noise.

Q：Can I replace the support ring separately or replace all seals together?
A：Separate replacement is available. It is recommended to replace all seals and dust seals together during overhaul to avoid secondary disassembly.

Q：What should be noticed during installation?
A：Avoid sharp edges damaging the ring, clean the groove, do not force expansion. Some material can be preheated in warm water for easier assembly.

Q：Are support ring, guide ring and back-up ring the same part?
A：Similar function but different specifications. They cannot be mixed. Use parts according to part number to prevent jamming or insufficient support.

Q：What causes the support ring to crack?
A：It is caused by long-term heavy side impact, wrong assembly clearance, abrasive impurities in oil and material aging embrittlement.

Q：How to store spare support rings?
A：Store away from light and high temperature. Do not squeeze or bend to avoid permanent deformation, keep away from strong acid and alkali.