Bearings
Ball Bearings
SKF Ball Bearings
Quick Code: BB-501544
6311 NR/C3 SKF Open Deep Groove Ball Bearing 55mm x 120mm x 29mm
The 6311 NR/C3 is a high-performance SKF deep groove ball bearing designed for versatile industrial and mechanical applications. Manufactured by the world's leading bearing manufacturer, this open bearing offers exceptional reliability and precision engineering for demanding operational environments.
Key Features:
- Single row deep groove ball race design
- Open configuration for easy lubrication
- Sheet steel cage construction
- Cylindrical bore for precise mounting
- Ring groove with circlip on outer ring
- Standard bearing steel material for durability
Technical Specifications:
- Inside Diameter: 55mm
- Outside Diameter: 120mm
- Width: 29mm
- Clearance: Slightly increased radial clearance (C3)
- Operating Temperature Range: -20°C to +120°C
- Tolerance Class: P0/PN2 / ABEC 1 precision
- Sealing: Open design
- Current Insulation: No current insulation
- Cage Material: Sheet steel
- Material: Standard bearing steel
Typical Applications:
- Electric motors
- Industrial machinery
- Automotive components
- Conveyor systems
- Agricultural equipment
- Power transmission systems
- Material handling equipment
The open design of this 6311 NR/C3 bearing allows for easy manual lubrication and inspection, making it ideal for applications where frequent maintenance is possible. Its slightly increased radial clearance (C3) provides additional space for thermal expansion, ensuring optimal performance in varying temperature conditions.
As with all SKF bearings, this product is manufactured to the highest quality standards, delivering reliable performance, extended service life, and consistent rotational characteristics across a wide range of industrial applications.

