Timken T138SA Tapered Roller Thrust Bearings

The Timken T138SA TTC-style tapered thrust roller bearing is engineered to carry heavy unidirectional axial loads while preserving precise shaft alignment in industrial power transmission systems and heavy machinery. Its separable construction and tapered rollers enable easier installation and maintenance, making it a strong fit for rolling mills, industrial gearboxes, mining equipment, machine tools, and construction machinery where high thrust capacity and long service life are essential. Key specifications include bore 1.385 in (35.179 mm), outside diameter 2.625 in (66.675 mm), and overall width 0.7656 in (19.446 mm); weight 0.699 lb (0.317 kg); maximum shaft fillet radius 0.030 in (0.8 mm); steering pivot rating 9,450 lbf (42,200 N); bearing material is high-quality bearing steel, and lubrication is oil or grease compatible. The bearing design is separable, with no oil holes in the retainer, and it supports single-direction axial loads; common replacements include Timken T138W, Timken T138-904A1, and SKF tapered thrust roller bearing equivalents.