Overview
The NSK 6313VVC3 is a single-row radial deep groove ball bearing featuring double non-contact seals and C3 radial internal clearance. Part of NSK’s proven 6300 series, this bearing combines robust construction with sealed-bearing reliability. The VVC3 designation indicates dual contact seals on both sides and expanded internal clearance to accommodate thermal expansion in high-speed applications.
Key Features
- Double non-contact seals (VV designation) on both sides retain lubricant and exclude contaminants
- C3 radial internal clearance for thermal expansion compensation and high-speed operation
- Pressed steel cage provides even ball spacing and reduces friction
- Handles both radial and axial loads in both directions—ideal for combined-load applications
- Deep groove geometry enables low-friction, high-speed rotation across industrial machinery
- NSK ultra-clean steel construction with super-finished raceways for extended bearing life and minimal noise
Technical Specifications
The NSK 6313VVC3 maintains standard ISO boundary dimensions for the 63-size series:
- Bore Diameter: 65 mm
- Outer Diameter: 140 mm
- Width: 33 mm
- Seal Type: Double non-contact seals (VV)
- Internal Clearance: C3 (Increased)
- Cage Material: Pressed steel
Typical Applications
The NSK 6313VVC3 is widely used in industrial machinery requiring sealed, high-speed performance:
- Electric motors and servomotors
- Gear drives and gearboxes
- Pumps and compressors
- Textile machinery and printing equipment
- Agricultural equipment (tractors, implements)
- Conveyor systems and material handling
- Industrial turbines
Compatibility & Replacements
Compatible With
- Any industrial application requiring an ISO 6313 deep groove ball bearing (65x140x33mm)
- Shaft diameters designed for 65 mm bore
- Standard bearing housings accepting 140 mm outside diameter
- Grease-lubricated systems (bearing comes pre-lubricated; verify grease compatibility with application)
Replaces / Drop-In Replacement For
- NSK 6313ZZ (shielded version; verify clearance requirements before substitution)
- NSK 6313 (open bearing; sealed version provides enhanced contamination protection)
- Other 6313 deep groove bearings meeting ISO 6313 boundary dimensions with 65x140x33mm specifications
Works With
- Any equipment using ISO 6313 metric deep groove ball bearing mounting interfaces
- Standard shaft/housing press-fit mounting practices for 65 mm bore and 140 mm OD
- Mineral and synthetic bearing greases (confirm lubricant compatibility with bearing seals)
- Systems requiring dual-direction axial load capacity and low-friction operation
