Timken T138-904A1 Tapered Roller Thrust Bearing

Description:

The Timken T138-904A1 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, construction equipment, machine tools, and mining 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 reliable thrust load performance and extend equipment service life.

Applications:

The Timken T138-904A1 is a TTC-style tapered thrust roller bearing designed to carry heavy axial loads while minimizing friction and maintaining accurate shaft alignment. Its separable construction simplifies installation and maintenance, making it suitable for steel mills, heavy industrial machinery, power transmission equipment, gear drives, presses, and other demanding applications where dependable thrust load support and long bearing life are essential.

Technical Specifications:

• Manufacturer: Timken
• Manufacturer Part Number (MPN): T138-904A1
• 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 T138
• Timken T138W
• SKF tapered thrust roller bearing equivalent