Overview
The NSK 6310C3 is a single-row deep groove ball bearing designed for reliable radial and axial load support in high-speed machinery. This open-type bearing features larger than standard radial internal clearance, making it particularly well-suited for applications requiring high rotational speeds and moderate operating temperatures. The NSK 6310C3 delivers consistent performance across industrial automation, conveyance, textile processing, and general mechanical power transmission.
Key Features
- Open type design with larger than standard radial internal clearance
- Deep grooves with arc-shaped tracks on both inner and outer rings; can carry radial loads and axial loads in both directions
- Suitable for parts that rotate at high speed with low noise and low vibration
- Precision-engineered single-row configuration for smooth operation
- Available new in box for immediate deployment
Technical Specifications
The NSK 6310C3 meets ISO standard dimensions and tolerances:
- Bore Diameter: 50mm
- Outer Diameter: 110mm
- Width (Thickness): 27mm
- Type: Deep Groove Ball Bearing, single row
- Clearance Class: C3 (larger than standard internal clearance)
- Design: Open type (unshielded, unsealed)
- Lubrication: Requires external lubrication
Typical Applications
NSK deep groove ball bearings serve a wide variety of applications including agricultural machinery, textile machines, carriers/conveyance, film rolling mills, powder/particle clutches, and outboard boat motors. The C3 internal clearance is particularly advantageous in high-speed industrial equipment where thermal expansion is a concern.
Compatibility & Replacements
Compatible With
- Industrial machinery requiring 50mm bore diameter
- High-speed rotating equipment and motor applications
- Agricultural and textile machinery
- Film processing and material handling systems
- Any ISO-standard bearing housing designed for 6310-size deep groove bearings
Replaces / Drop-In Replacement For
- NSK 6310 (standard clearance version)
- Other manufacturers’ equivalent 50x110x27 deep groove bearings with C3 clearance (SKF 6310/C3, FAG 6310-2RSR-C3, Timken equivalents)
Works With
- Standard ISO 15 metric bearing housings and shafts
- External lubrication systems (grease or oil)
- High-speed spindle and motor applications










