The Caterpillar CAT 3K-2518 Ball Bearing is a Caterpillar OEM replacement bearing identified by part number 3K-2518. It features a 75 mm internal diameter bore and a 4.53 inch outer diameter, aligning with Cat’s 75 mm Internal Diameter Special Ball Bearing designation. Cat notes that each bearing is designed to meet specific Cat design and application requirements, and this model is offered as a direct replacement for compatible Cat equipment. Verified specifications include bore 75 mm and outer diameter 4.53 inches, with the 3K-2518 catalog listing ensuring correct fit in Cat assemblies that require a precise bore and substantial external envelope.
