The Timken Company 6387 Tapered Roller Bearing

Description:

The Timken 6387 tapered roller bearing is a precision single row tapered roller bearing cone designed to support combined radial and axial loads in heavy-duty rotating equipment. Commonly installed in industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, and power transmission systems where accurate shaft alignment and high load capacity are required. Maintenance teams, OEMs, and system integrators use this bearing cone for equipment repairs, bearing replacements, retrofit projects, and preventive maintenance to maximize reliability and bearing service life.

Applications:

The Timken 6387 tapered roller bearing cone is engineered for use with compatible Timken bearing cups in demanding industrial and mobile equipment. It is widely used in wheel-end assemblies, industrial drives, conveyors, heavy-duty axles, agricultural machinery, and other rotating equipment requiring dependable load distribution, reduced friction, and long operating life under continuous service conditions.

Technical Specifications:

• Manufacturer Part Number (MPN): 6387
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Cone
• Bearing Type: Single Row Tapered Roller Bearing Cone (TS)
• Cone Part Number: 6387
• Design Units: Inch (Imperial)
• Bore Diameter (d): 2.2500 in (57.150 mm)
• Inner Ring Width (B): 2.2050 in (56.007 mm)
• Dynamic Radial Load Rating (C1): 72,300 lbf (321,000 N)
• Dynamic Radial Load Rating (C90): 18,700 lbf (83,300 N)
• Static Radial Load Rating (C0): 90,900 lbf (404,000 N)
• Dynamic Axial Load Rating (Ca90): 10,400 lbf (46,300 N)
• Maximum Shaft Fillet Radius: 0.030 in (0.800 mm)
• Shaft Backing Shoulder Diameter – Frontface (da): 2.83 in (72.00 mm)
• Shaft Backing Shoulder Diameter – Backface (db): 2.83 in (72.00 mm)
• K Factor: 1.80
• Geometry Factor (Cg): 0.0827
• Weight: 9.0 lb (4.1 kg)

Common Replacements:

• Timken 6387A
• SKF 6387
• NTN 6387