Timken A2126 Tapered Roller Bearing Cup

The Timken A2126 is a single cup tapered roller bearing designed to mate with a compatible Timken cone (A2031) to support combined radial and axial loads in automotive wheel hubs, trailers, agricultural machinery, gearboxes, and general industrial equipment. As the outer-ring component of a separable bearing, it delivers precise raceway geometry and even load distribution for smooth, reliable operation under continuous-duty conditions. Manufactured from through-hardened bearing steel, this A2000-series cup features an outside diameter of 1.2595 in (31.991 mm) and an outer ring width of 0.3125 in (7.938 mm). The housing backing shoulders measure 1.18 in (30.00 mm) on the front face and 1.02 in (25.91 mm) on the back face, with a maximum housing fillet radius of 0.050 in (1.27 mm). Key design factors include an e factor of 0.41, a Y factor of 1.48, and a geometry factor (Cg) of 0.0308, all contributing to predictable fit and performance. Weight is approximately 0.10 lb (0.045 kg). The Timken A2126 is used with the A2031 cone in applications requiring accurate shaft alignment and the ability to withstand combined radial and thrust loads, including automotive wheel bearings, trailers, agricultural machinery, industrial gearboxes, machine tools, and general power transmission equipment.