Overview
The Fafnir 7209WN SU is a single-row angular contact ball bearing engineered for combination radial and axial loading in industrial machinery. Manufactured by Timken under the Fafnir brand, this bearing combines proven design geometry with quality steel construction to deliver long service life in demanding applications including motors, pumps, compressors, and machine tools.
Key Features
- Single-row angular contact design with 40° contact angle for high thrust capacity in one direction
- Open closure (unsealed) configuration for applications requiring washdown or direct lubrication
- Pressed brass cage for balanced load distribution and smooth operation
- Light-duty 7200 series classification suitable for general industrial machinery
- Available in both sealed (2Z/RS) and unsealed variants for flexible installation options
Technical Specifications
- Bore Diameter (d): 45 mm
- Outer Diameter (D): 85 mm
- Bearing Width (B): 19 mm
- Contact Angle: 40°
- Dynamic Load Rating (C): 40,500 N
- Static Load Rating (Câ‚€): 25,900 N
- Cage Material: Pressed Brass
- Closure Type: Open (Unsealed)
- Maximum Speed (Grease): 4,625 rpm
- Maximum Speed (Oil): 6,165 rpm
- Operating Temperature Range: -50°C to +120°C
- Series: 7200WN
- Manufacturer: Timken Fafnir
Typical Applications
The Fafnir 7209WN SU is widely used in:
- AC induction motors and servo drives requiring precision bearing support
- Pumps and compressors handling combined radial and axial forces
- Machine tool spindles and grinding equipment
- Industrial gearboxes and transmission systems
- Conveyor drives and material handling equipment
- Duplex or tandem mounting configurations for high-thrust applications
Compatibility & Replacements
Compatible With
- Timken Fafnir bearing housing standards and ISO 286 tolerances
- Applications requiring 40° angular contact geometry
- Shaft diameters per ISO 286 for 45 mm bore class
- Both grease and oil lubrication systems
- Duplex mounting configurations for bidirectional thrust loads
Replaces / Drop-In Replacement For
- Timken SKF part equivalents with identical bore, OD, and width dimensions
- NSK and FAG angular contact bearings in the 45 mm bore, 85 mm OD class
- Previous generation Fafnir 7209WN variants (standard and SU sealing options)
- Verify exact cross-reference with bearing manufacturer before ordering
Works With
- Mineral and synthetic industrial bearing greases
- ISO VG 32 to ISO VG 46 bearing oils
- Standard bearing housings and adapter sleeves for 45 mm bore
- Angular contact bearing preload and mounting systems
- Industrial automation systems requiring ISO 15 or better cleanliness
