NTN Bearing 30211 18 MM Cup Width, 21 MM Cone Width, 3.9370 in OD, Class 0 Precision Rating, Tapered Roller Bearing Set - 2.1654 in BORE

Tapered roller bearings utilize conical rollers and raceways, arranged so that the rollers and raceways meet at a common apex. The rollers are guided by contact between the large end of the roller and a rib on the inner ring. This provides high capacity for radial and single thrust loads.

NTN offers premium tapered roller bearings under the NTN and Bower brand names. Cups, cones, and rollers are made from case-hardened alloy steel of “Bearing Quality” to provide superior fatigue life and reliability. Precise control of heat treatment, dimensions, and surface finish of the components further contribute to reliable bearing performance.