Caterpillar 8S-3517 Bearing

Caterpillar 8S-3517 Bearing is a genuine CAT single-row special ball bearing with a 101.60 mm dimension, cataloged as 8S-3517 in Cat Parts catalogs. The designation “Single Row Special Ball Bearing” indicates a model designed for Cat applications and specific fit in CAT equipment. As a replacement part, it is intended to meet Cat’s original specifications for fit and performance in heavy equipment. Dealer listings commonly cite compatibility with multiple Caterpillar models, including the 651E series, signaling its use in drive and hub assemblies and other machine locations that require a single-row ball bearing. This bearing type provides the radial support typical of single-row ball bearings in demanding mining, construction, and off-road environments, where CAT bearings are selected for reliable operation under heavy loads and exposure to harsh conditions. The 8S-3517 part number uniquely identifies this bearing within CAT’s catalog, helping ensure correct replacement and alignment with the machine’s geometry and performance characteristics.