Timken 9386H/9321 Tapered Roller Bearing Cup And Cone

Description:

The Timken 9386H/9321 tapered roller bearing is a precision TS (Tapered Single) bearing assembly consisting of the Timken 9386H cone and Timken 9321 cup. Engineered to support heavy combined radial and axial loads, this bearing delivers excellent load distribution, precise shaft alignment, and long service life in demanding industrial applications. Commonly installed in industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, steel processing equipment, and power transmission systems, it is widely used by maintenance teams, OEMs, and system integrators for equipment repairs, bearing replacements, retrofit projects, and preventive maintenance to maximize equipment reliability and minimize downtime.

Applications:

The Timken 9386H/9321 tapered roller bearing is designed for applications requiring dependable performance under continuous radial and thrust loading. It is widely used in industrial drives, heavy conveyors, mining machinery, agricultural equipment, construction equipment, and other rotating machinery where accurate shaft positioning, low friction, and high load-carrying capacity are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 9386H / 9321
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Assembly
• Bearing Type: TS (Tapered Single)
• Cone Part Number: 9386H
• Cup Part Number: 9321
• Series: 9300 Series
• Design Units: Inch (Imperial)
• Material: Through-Hardened Chrome Steel
• Cage Type: Stamped Steel
• Bore Diameter (d): 3.3125 in (84.138 mm)
• Outside Diameter (D): 6.7500 in (171.450 mm)
• Overall Bearing Width (T): 1.0000 in (25.400 mm)
• Cone Width (B): 1.8125 in (46.038 mm)
• Cup Width (C): 1.2500 in (31.750 mm)
• Dynamic Radial Load Rating (C1): 81,600 lbf (363,000 N)
• Dynamic Radial Load Rating (C90): 21,200 lbf (94,100 N)
• Static Radial Load Rating (C0): 78,800 lbf (351,000 N)
• Dynamic Axial Load Rating (Ca90): 27,700 lbf (123,000 N)
• Maximum Shaft Fillet Radius: 0.140 in (3.600 mm)
• Maximum Housing Fillet Radius: 0.130 in (3.300 mm)
• Shaft Backing Shoulder Diameter – Frontface (da): 3.87 in (98.30 mm)
• Shaft Backing Shoulder Diameter – Backface (db): 4.37 in (111.00 mm)
• Housing Backing Shoulder Diameter – Frontface (Da): 6.48 in (164.59 mm)
• Outer Ring Flange Diameter (D1): 6.7500 in (171.450 mm)
• e Factor: 0.76
• K Factor: 0.76
• Geometry Factor (Cg): 0.105
• G1 Factor: 118
• G2 Factor: 18.6
• Weight: 10.4 lb (4.7 kg)
• Typical Applications: Industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, steel mills, conveyors, and power transmission equipment.

Common Replacements:

• SKF 9386H/9321
• NTN 9386H/9321
• KOYO 9386H/9321