1303-C3
1300 Series Self Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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1303-C3 Bearing Product Overview & Core Advantages
The 1303-C3 is a double row angular contact ball bearing designed for applications requiring high rigidity and reliable performance under combined loads. This precision bearing features an open design with optimized internal geometry to handle significant radial loads while accommodating axial loads in both directions. Its compact dimensions (17mm bore × 47mm OD × 14mm width) make it ideal for space-constrained applications. The C3 radial internal clearance ensures stable operation across varying thermal conditions, while the brass cage contributes to smooth high-speed operation up to 20,000 rpm.
1303-C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 1303 | Basic bearing designation indicating double row angular contact construction with 17mm bore diameter | Defines core bearing dimensions and type |
| C3 | Radial internal clearance greater than normal | Accommodates thermal expansion in high-speed or temperature-varying applications |
1303-C3 Bearing Structural Features & Performance Benefits
High Rigidity Design: The double row configuration provides enhanced stiffness compared to single row bearings, making it suitable for applications requiring precise shaft positioning and minimal deflection under load.
Superior Load Capacity: Engineered to handle combined loads effectively, with a dynamic load rating of 2858 lbf and static load rating of 765 lbf. The optimized contact angle allows for efficient distribution of both radial and axial forces.
High-Speed Performance: The brass cage ensures stable operation at high rotational speeds up to 20,000 rpm, reducing vibration and maintaining precision during extended operation.
Precision Manufacturing: Manufactured from chrome steel with tight dimensional tolerances (bore: -0.008mm to 0, OD: -0.011mm to 0) for consistent performance in precision applications.
1303-C3 Bearing Typical Application Areas
- Machine tool spindles and precision rotating components
- Industrial pumps and compressor systems
- Electric motors and gearboxes requiring high rigidity
- Material handling equipment and conveyor systems
- Agricultural machinery and automotive components
- Precision instruments and medical equipment
