The Timken Company 7318WNSU Angular Contact Bearing

Description:

The Timken Fafnir 7318WNSU angular contact bearing is a single row angular contact ball bearing designed to support combined radial and axial loads in high-speed industrial rotating equipment. Commonly installed in machine tool spindles, industrial gearboxes, pumps, compressors, electric motors, and precision manufacturing equipment where high-speed operation and accurate shaft positioning are essential. Maintenance teams, OEMs, and system integrators use this bearing for equipment repairs, bearing replacements, retrofit projects, and precision machinery maintenance to maximize performance and service life.

Applications:

The Timken Fafnir 7318WNSU angular contact bearing is engineered for demanding industrial applications requiring high thrust capacity, smooth operation, and precise shaft guidance. Its universal mounting design and 40° contact angle make it suitable for duplex bearing arrangements in machine tools, industrial drives, pumps, compressors, precision gearboxes, and other high-speed rotating equipment operating under combined radial and axial loading conditions.

Technical Specifications:

• Manufacturer Part Number (MPN): 7318WNSU
• Manufacturer: Timken Fafnir
• Product Type: Angular Contact Ball Bearing
• Bearing Type: Single Row Angular Contact Ball Bearing
• Series: 7300 Series
• Contact Angle: 40°
• Design Units: Metric
• Bore Diameter (d): 90 mm
• Outside Diameter (D): 190 mm
• Width (C): 43 mm
• Dynamic Radial Load Rating (C1): 40,000 lbf (177,000 N)
• Static Radial Load Rating (C0): 30,500 lbf (135,000 N)
• Limiting Speed (Grease): 2,500 rpm
• Limiting Speed (Oil): 2,860 rpm
• Cage Type: Ball Piloted Pressed Brass Cage
• Ball Material: Steel
• Radial Internal Clearance: C3
• Universal Mounting: Yes (SU)
• Precision Class: ISO P0 / Standard
• Maximum Shaft Fillet Radius: 0.118 in (3 mm)
• Weight: 13.76 lb (6.247 kg)
• Typical Applications: Machine tool spindles, industrial gearboxes, pumps, compressors, electric motors, precision manufacturing equipment

Common Replacements:

• SKF 7318 BECBM
• NSK 7318AW
• NTN 7318U