278-0217: Needle Roller Bearing

Description: Cat radial needle roller and cage assemblies are self-contained, ready to mount bearings designed to be used where the housing bore and shaft can act as raceways. They are designed to carry large loads and function smoothly and dependably through high rotational speeds. 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. Attributes: • Outside Diameter: 40 mm (1.57 in) • Inside Diameter: 35 mm (1.38 in) • Height: 17 mm (0.67 in) • High load carrying capacity and stiffness. • Supports high rotational speeds. • Lowest cross-section among rolling bearings. • Non-separable unit for ease of handling and installation. Application: Cat radial needle roller and cage assemblies are most commonly used in applications where the housing bore and shaft can be used as raceways. Typical applications for radial needle roller and cage assemblies are planetary gears, constant-mesh gears, idler gears and connecting rods. Consult your owner's manual or contact your local Cat Dealer for more information.