Description:Cat® Boom is a structure component used to tilt and lift the attachments. Cat® Boom must endure frequent direction and position changes. It is a high-performance device that delivers firm and precise movement for various applications in excavator sites. It is engineered to handle high loads, and temperatures, and to operate reliably and efficiently in harsh environments. Cat booms are designed and manufactured to meet these types of demands. Cat® Sleeve Bearings support rotational movement between machine frames linkage and work tools. They are found mostly in the arms and buckets of machines. Genuine Cat Pin and Sleeve Bearings are specifically designed to operate as a system to deliver the performance you expect. Caterpillar design engineers match the right combination of dimensions, materials, surface finish, and manufacturing processes, to each part to enable them to work and wear effectively with all the other neighboring and dependent parts. Cat® Heavy Duty Sleeve Bearings are built with high grade steel and hardened for exceptional strength and wear life. They work as a system for your specific Cat machine and are tested and proven in the world's most severe applications. They give you maximum strength and resistance and result in a lower overall cost, outstanding strength and fatigue life, superior resistance to abrasive wear, and exceptional protection against pin spalling and galling, even in high-load conditions.Application:Cat® Sleeve Bearings are used in Boom attachments for seamless rotation. Consult your owner's manual or contact your local Cat® Dealer for more information.