Komatsu – Boom/Pivot Connection Ear Heavy Duty Connection Block

Komatsu Link Ear

Komatsu 7T8555 (FARK275-56122) link ear is a durable pivot/center link block used at the boom-arm or bucket connection points of Komatsu construction machinery. The part is a critical structural component that connects the machine’s moving parts, carries the load, and serves as a pin housing. The large center bearing seat on the body and the pin seating surfaces at both ends are designed to operate under high impact and load.

Made of heavy-duty cast steel, the link ear enhances the stability of the boom, arm, or link mechanism operating under continuous load. The precision-machined bearing surface prevents gaps when working with the pin, reduces vibration, and extends the machine’s service life.

This part is a high-strength replacement part that is easy to install and produced in original dimensions, preferred during the replacement of connection points in excavators, loaders, or similar Komatsu heavy construction machinery. It prevents cracking, deformation, and premature wear under field conditions; ensures reliable performance in heavy earthworks, rock crushing, construction site operations, and machines operating under continuous load.

Komatsu 7T8555 (FARK275-56122) link ear is an ideal solution for users seeking durability, precision, and long life in their machine’s boom and connection mechanism.