Overview
The SKF 5313 A/C3 is a precision double row angular contact ball bearing designed for industrial machinery requiring high load capacity and reliability. With a 65 mm bore, 140 mm outside diameter, and 58.7 mm width, this bearing features open construction with steel cage, ABEC 3 / ISO P6 precision rating, and 30-degree contact angle. The double row configuration and C3 internal clearance (loose) make it suitable for demanding mechanical power transmission and industrial automation applications.
Key Features
- Double row configuration with rolling elements positioned at an angle to each other, allowing the bearing to handle higher radial and axial loads in both directions
- 30-degree contact angle, optimizing axial load-handling capacity
- Steel cage construction with ABEC 3 / ISO P6 precision classification
- Open design allows user-applied lubrication for flexible maintenance schedules
- Uniform load distribution across raceways minimizes friction and enhances performance
- C3 internal clearance for optimal axial and radial play under typical operating conditions
Technical Specifications
- Bore Diameter: 65 mm
- Outside Diameter: 140 mm
- Width: 58.7 mm
- Bearing Type: Double row angular contact ball bearing
- Contact Angle: 30 degrees
- Internal Clearance: C3-Loose
- Cage Material: Steel
- Enclosure: Open
- Precision Class: ABEC 3 | ISO P6
- Weight: 3.509 kg (approximately 7.7 lbs)
- Maximum RPM: 4,300
- Mounting Style: Unmounted (loose bearing)
Typical Applications
- Spindle bearings in machine tools and grinding equipment
- Gearbox input and output shafts
- Pump and motor drive couplings
- Industrial motor and compressor assemblies
- Mechanical power transmission systems requiring combined radial and axial load capacity
- Automation and conveyor systems
Compatibility & Replacements
Compatible With
- Standard industrial shaft diameters: 65 mm bore applications
- Bearing housings designed for 140 mm outside diameter
- Industrial machinery requiring ABEC 3 precision and C3 clearance
- Systems requiring manual or automatic lubrication compatibility
Replaces / Drop-In Replacement For
- SKF 5313 C (standard variant)
- SKF 5313 M (metric series variant)
- MRC 5313 C and 5313 M equivalents
Works With
- Standard grease and oil lubrication systems
- Industrial bearing installation tools and mounting equipment
- Standard shaft and housing tolerances per ISO 286
- Preventive maintenance and condition monitoring systems for bearing health assessment
