XCMG OEM Bucket Pin 800KII.8.4 (P/N 253100709) – Heavy-Duty Linkage Pivot Shaft

This XCMG Bucket Pin (Part Number: 253100709, Drawing No.: 800KII.8.4) is a heavy-duty pivot shaft engineered for the front-end linkage system—connecting the bucket to the linkage arms (or the stick/boom assembly) on XCMG large-tonnage wheel loaders derived from the 800K-II series. Manufactured from premium 42CrMo alloy steel, the pin undergoes quenching and tempering followed by induction hardening on the working surface (HRC 50–58), delivering high core toughness and superior wear resistance. Both ends are precision ground to OEM tolerances, with cross-drilled grease holes and circumferential grease grooves to ensure proper lubrication distribution to the mating bronze or bimetal bushings. The pin is secured in position by snap rings, cotter pins, or lock plates depending on its mounting location (bucket-to-link, bucket-to-stick, or boom hinge). It is a critical consumable in the loader's work equipment, directly affecting digging accuracy, bucket float control, and linkage stability under shock loading.