Overview
The SKF 3313 A/C3 is a high-performance double-row angular contact ball bearing designed for demanding industrial applications. This bearing features a 65mm bore diameter, 140mm outside diameter, and 58.7mm width, with a back-to-back (O) arrangement and C3 internal clearance. The SKF 3313 A/C3 delivers superior load capacity while maintaining compact design, making it ideal for precision machinery requiring bi-directional axial and radial force support.
Key Features
- Double-row angular contact design with back-to-back (O) arrangement for high-speed operation
- 30° contact angle optimizes axial load-handling capacity and rigidity
- C3 internal clearance accommodates thermal expansion in variable temperature environments
- Brass sheet metal cage ensures durability and low-noise operation
- SKF Explorer performance class rating for enhanced bearing life and reliability
- Basic dynamic load rating of 146 kN with static rating of 110 kN
Technical Specifications
Bore Diameter: 65 mm | Outside Diameter: 140 mm | Width: 58.7 mm | Number of Rows: 2 | Contact Angle: 30° | Arrangement: Back-to-back (O) | Internal Clearance: C3 | Basic Dynamic Load Rating: 146 kN | Basic Static Load Rating: 110 kN | Cage Material: Brass (sheet metal) | Limiting Speed: 4500 r/min | Weight: 8.521 lb (3.87 kg) | Bearing Material: High-carbon steel | Without seal
Typical Applications
- Machine tool spindles and gearboxes requiring high precision and rigidity
- Industrial pumps and compressors handling combined loads
- Electric motor and electric spindle support applications
- Automotive transmission systems and wheel hubs
- Material handling conveyors and lifting equipment
- Railway traction motors and wheelsets
Compatibility & Replacements
Compatible With
- Machine tool spindle applications rated for double-row angular contact bearings
- Industrial equipment requiring 65mm bore diameter angular contact bearings
- Systems designed for C3 internal clearance specifications
- High-speed rotating equipment up to 4500 r/min operational limits
Replaces / Drop-In Replacement For
- 3313 A (standard version without C3 designation)
- INA 3313-2RS-C3 (sealed variant equivalents)
- NTN 3313 comparable models
- FAG/Schaeffler 3313 series angular contact bearings
Works With
- Equipment specifications requiring back-to-back (O) arrangement angular contact bearings
- Systems supporting combined radial and bidirectional axial loads
- Industrial applications using standard metric bearing mounting interfaces
- Maintenance programs for SKF Explorer-class bearing replacements
