Tapered roller bearings

Tapered roller bearings support combined radial and axial loads, with the axial load in one direction only. The cone and cup separate, are mounted separately, and the clearance is adjusted during assembly, which gives rigidity to the assembly. They are used in wheel shafts, gearboxes and transmissions, differentials, pumps and construction machinery, almost always in opposed pairs.

Designations vary by brand. In the ISO metric standard, codes such as 30203-XL (FAG), 4T-30203 (NTN) or HR 30206 J (NSK) start with series 302, 303, 320, 322 or 329, and the last two digits multiplied by 5 give the bore diameter from 04 (30206: 30 mm). Timken identifies construction types with acronyms: TS and TSF are single row, TDI and TDO are double row. In SKF pairs, such as 305269 D or 305183, the numerical reference defines the set and is quoted complete.

To choose, consider the direction and magnitude of the axial load, the speed, the fit on shaft and housing, and the preload or axial clearance required by the mounting. A larger contact angle supports more axial load, and double row designs solve shafts with load in both directions. For replacements, it is advisable to order cone and cup as a pair, with the complete reference of each.

We market Timken, NSK, NTN, FAG and SKF. To request a quote, send us by WhatsApp the cone and cup code, or the bore, outside diameter and width, and the bearing you are replacing. We will provide a quote and indicate the equivalence between brands.