Caterpillar 6V-5003 Self-Aligning Ball Bearing

The Caterpillar 6V-5003 Self-Aligning Ball Bearing is a CAT OEM component designed for heavy-duty drivetrain and axle applications where shaft misalignment can occur. This self-aligning bearing accommodates angular displacement between races to reduce edge loading and extend service life in demanding equipment, such as differential and wheel-end assemblies on Cat machines. Verified dimensions for 6V-5003 indicate an outer diameter of 90 mm, an inner bore of 57 mm, and a width of 50 mm, with geometry that fits housings specified for this part number. As a Cat-bearing solution, it adheres to Caterpillar engineering tolerances and is intended for use in equipment like construction and mining machinery that rely on robust, low-friction rotation and reliable alignment at the joint between shaft and housing. When selecting this part, ensure the housing bore and mounting clearance match the 57 mm inner bore and the 50 mm width to ensure proper seating and load distribution, avoiding misfit or premature wear in service.