804052129 hopper cylinder for XCMG RP705 paver spare parts

product parameters

- Part Number: 804052129
- Name: Hopper Cylinder
- Applicable Model: RP705 medium crawler paver
- Type: Double-acting hydraulic cylinder assembly
- Material: Honed seamless tube, chrome-plated alloy piston rod
- Process: Honing, hard chrome plating, precision boring, pressure test
- Matching Parts: Hinge pin, retaining ring, hydraulic fitting
- Function: Actuate hopper flip plate, control material feeding and prevent spillage

Applicable Scenarios

Equipped on both sides of the hopper of the RP705 paver, it is widely used for asphalt paving of municipal roads, highways, national and provincial roads, industrial park roads, and airport runways.

- Precision honing of the cylinder results in low friction, smooth operation, and low starting pressure.
- Piston rod hard chrome plating, resistant to scratches from gravel and corrosion from asphalt construction sites.
- Full set of high-temperature and high-pressure resistant seals, preventing leakage during long-term operation and extending service life.
- Built-in buffer structure reduces reversing impact and protects the flap and hinge structure.
- The hinge lugs have high coaxiality, reducing off-center loads and preventing damage to the hydraulic cylinder from lateral forces.
- Genuine assembly, with perfectly matched oil port, mounting distance, and stroke; direct replacement without modification.
- Factory pressure testing to prevent oil leaks and pressure drops.

FAQ

Q: Must the whole cylinder be replaced if external leakage occurs?
A: Seal kits can be replaced if only seals are worn. Replace the full assembly if the rod or barrel is scored.

Q: What causes slow movement and insufficient force?
A: Check system pressure and oil contamination first, then inspect for internal leakage and material jamming.

Q: Can a scratched piston rod remain in service?
A: Minor scratches may be monitored. Deep scratches breaking the chrome layer will damage seals and cause persistent leakage.

Q: How to synchronize left and right hopper cylinders?
A: Adjust flow control valves and clear jammed asphalt at hinge points to balance load.

Q: How to store the cylinder properly?
A: Retract the rod fully, cap the ports and apply anti-rust grease. Keep it protected from dust and grit.