Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-508318
3308 B-2RSRTNG NSK Double Row Angular Contact Ball Bearing 40mm x 90mm x 36.5mm
3308 B-2RSRTNG NSK Double Row Angular Contact Ball Bearing
The 3308 B-2RSRTNG is a premium double row angular contact ball bearing from NSK, engineered to deliver exceptional performance in high-speed, precision applications requiring simultaneous radial and axial load handling. With its robust 40mm bore diameter and generous 90mm outer diameter, this bearing provides enhanced load capacity and rigidity compared to single row alternatives, making it ideal for demanding industrial and automotive applications.
Specifications:
- Brand: NSK
- Bore Diameter: 40mm
- Outside Diameter: 90mm
- Width: 36.5mm
- Row Type: Double Row
- Contact Angle: 40°
- Seal Type: Lip seal on both sides (2RS)
- Cage Type: Polyamide
- Material: Standard bearing steel
- Clearance: Normal radial clearance with low axial clearance
- Tolerance Class: P0/PN2 (ABEC 1)
- Operating Temperature Range: -20°C to +120°C
- Outer Ring: Without flange/groove
- Arrangement: Bearing pair with low axial clearance in O- and X-arrangement
- Reference: 3308B-2RSRTNG
Key Features:
- Double row configuration for superior axial load capacity in both directions
- 40° contact angle optimised for balanced radial and axial load distribution
- Dual lip seals on both sides providing excellent protection against contamination and moisture ingress
- Low axial clearance bearing pair configuration for O- and X-arrangements ensuring precise positioning
- Polyamide cage construction for lightweight, durable operation
- Precision engineering with P0/PN2 tolerance class (ABEC 1)
- Manufactured by NSK, a world-leading bearing technology specialist
- Enhanced load capacity and rigidity for demanding applications
Typical Applications:
The 3308 B-2RSRTNG is commonly used in:
- Gearboxes and transmission systems requiring bidirectional axial loading
- Industrial electric motors and high-speed spindles
- Machine tool equipment with combined radial and axial forces
- Heavy-duty industrial machinery subjected to sustained loading
- Automotive applications requiring robust, reliable performance
- Pump and compressor assemblies handling dynamic loads
The integrated dual lip seals maintain protection from external contaminants while allowing the bearing to perform reliably under demanding operational conditions where combined and sustained radial and axial loads are present.

