Description:Cat® Undercarriage Gear with Bearings are machined from carefully selected materials to exacting specifications that match the loads encountered in Cat machines. They are manufactured using special, and in some cases proprietary, heat treat processes including case carburizing. Cat® Gears have the industry's highest power density, or the amount of power a gear can transmit relative to its size and are designed with reusability in mind. Consequently, they are more durable and keep your overall machine operating costs down. Cat 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.Application:Cat® Gear with Bearing are used in the undercarriage of Cat® Machines. Consult your owner's manual or contact your local Cat® Dealer for more information.