Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-511670
3309 JC3 NSK Double Row Angular Contact Ball Bearing 45mm x 100mm x 39.7mm
3309 JC3 NSK Double Row Angular Contact Ball Bearing
This premium double row angular contact ball bearing from NSK is engineered to handle simultaneous radial and axial loads with exceptional precision and reliability. The double row configuration provides superior load capacity compared to single row bearings, making it an ideal choice for demanding industrial applications requiring robust performance and extended service life.
Design & Construction
NSK's advanced engineering combines strategically displaced raceways in both inner and outer rings, enabling efficient accommodation of complex loading conditions. The double row design delivers enhanced load distribution and stability for high-speed, precision applications.
- Double row configuration for superior radial and axial load capacity
- Slightly increased radial clearance for optimised performance and operational flexibility
- Capable of managing combined radial and axial loading with exceptional precision
- Steel cage construction ensures reliable performance under demanding conditions
- Open design (unsealed) allows for lubrication flexibility and suitability for clean, controlled environments
- Standard arrangement for versatile industrial applications
- Outer ring without flange or groove for straightforward installation
Specifications
- Bore Diameter: 45mm
- Outside Diameter: 100mm
- Width: 39.7mm
- Row Type: Double Row
- Cage Material: Steel
- Seal Type: Open Bearing (Unsealed)
- Contact Angle: 30-40 degrees
- Radial Clearance: Slightly Increased
- Material: Standard bearing steel
- Tolerance Class: P0/PN2 (ABEC 1)
- Operating Temperature Range: -20°C to +150°C
- Manufacturer: NSK
- Reference Number: 3309 JC3
Ideal Applications
Perfect for heavy-duty industrial equipment, gearboxes, spindle systems, and precision machinery where combined loading and high-speed operation are critical requirements. The double row design and slightly increased clearance make this bearing particularly suitable for applications demanding greater load capacity and operational flexibility. Commonly used in automotive transmissions, industrial pumps, electric motors, and other equipment where reliable performance under demanding conditions is essential.
In stock for immediate dispatch. Contact us if you require alternative clearances, seal types, or specifications.

