Cat® Boom is a structure component used to tilt and lift the attachments. Cat® Boom with Bearing support rotational movement between machine frames linkage and work tools. 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. 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. Cat® Parts are manufactured to precise specifications and are built for durability, reliability, productivity, and less environmental impact.Application:Cat® Boom with Sleeve Bearings are designed for conditions that demand durability and load strength for longer bearing life. Consult your owner's manual or contact your local Cat® Dealer for more information.