Timken T138SA Tapered Roller Thrust Bearings

Description:

The Timken T138 tapered thrust roller bearing is used to support heavy unidirectional axial loads in industrial power transmission systems, gear drives, and heavy-duty machinery. Commonly installed in rolling mills, industrial gearboxes, mining equipment, machine tools, and construction machinery where high thrust load capacity and precise axial shaft positioning are required. Maintenance teams, OEMs, and system integrators use this bearing for replacement, repair, retrofit, and equipment overhaul to restore dependable thrust load performance and maximize equipment reliability.

Applications:

The Timken T138 is a TTC-style tapered thrust roller bearing designed to accommodate heavy axial loads while maintaining precise shaft alignment and minimizing friction. Its separable construction allows easier installation and maintenance, making it ideal for steel mills, mining operations, industrial gearboxes, power transmission equipment, presses, and other demanding applications where high thrust capacity and long service life are essential.

Technical Specifications:

• Manufacturer: Timken
• Manufacturer Part Number (MPN): T138
• Product Type: Tapered thrust roller bearing
• Bearing Type: TTC tapered thrust roller bearing
• Bore Diameter (ID): 1.385 in (35.179 mm)
• Outside Diameter (OD): 2.625 in (66.675 mm)
• Overall Width: 0.7656 in (19.446 mm)
• Rolling Elements: Tapered rollers
• Load Direction: Single-direction axial (thrust) load
• Oil Holes in Retainer: No
• Maximum Shaft Fillet Radius: 0.030 in (0.8 mm)
• Steering Pivot Rating: 9,450 lbf (42,200 N)
• Bearing Weight: 0.699 lb (0.317 kg)
• Bearing Design: Separable assembly
• Bearing Material: High-quality bearing steel
• Lubrication: Oil or grease compatible

Common Replacements:

• Timken T138W
• Timken T138-904A1
• SKF tapered thrust roller bearing equivalent