This XCMG Cylinder Rocker Pin (P/N 253100713, Model 800KII.8.6) is a precision-forged pivot shaft made from 42CrMo alloy steel, quenched & tempered then induction hardened (HRC 50–58) on the bearing surface. It serves as the hinge pin between hydraulic lift/steer cylinders and rocker arms or linkage bell cranks in XCMG heavy machinery's front work equipment and articulation steering systems. Precision ground with cross-drilled grease holes and grease grooves, it ensures smooth cylinder swing, reduces bushing wear, and resists bending under high hydraulic pressure and shock loads. Typical failure modes—excessive clearance causing cylinder wander, knocking noises, or uneven bucket/lift action—are eliminated by timely replacement with this OEM-spec pin.
Applicable Scenarios:
Quarry/Mining: Withstands shock loading from aggressive digging/loading cycles; hardened surface resists abrasion from slurry and dust ingress.
Stockyard/Port: Continuous moderate-load articulation; corrosion-protected finish (black oxide/zinc) suits humid/salty environments.
Scheduled Overhaul: Replaced together with bronze bushings and seals during 2000h/4000h linkage service to restore original joint tightness and eliminate play.
This XCMG Cylinder Rocker Pin (P/N 253100713, Model 800KII.8.6) is a precision-forged pivot shaft made from 42CrMo alloy steel, quenched & tempered then induction hardened (HRC 50–58) on the bearing surface. It serves as the hinge pin between hydraulic lift/steer cylinders and rocker arms or linkage bell cranks in XCMG heavy machinery's front work equipment and articulation steering systems. Precision ground with cross-drilled grease holes and grease grooves, it ensures smooth cylinder swing, reduces bushing wear, and resists bending under high hydraulic pressure and shock loads. Typical failure modes—excessive clearance causing cylinder wander, knocking noises, or uneven bucket/lift action—are eliminated by timely replacement with this OEM-spec pin.
Applicable Scenarios:
Quarry/Mining: Withstands shock loading from aggressive digging/loading cycles; hardened surface resists abrasion from slurry and dust ingress.
Stockyard/Port: Continuous moderate-load articulation; corrosion-protected finish (black oxide/zinc) suits humid/salty environments.
Scheduled Overhaul: Replaced together with bronze bushings and seals during 2000h/4000h linkage service to restore original joint tightness and eliminate play.
