1308 ETN9/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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1308 ETN9/C3 Bearing Product Overview & Core Advantages
The 1308 ETN9/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 a nylon cage and is pre-lubricated for immediate operation. Its double row construction enables it to simultaneously handle significant radial loads and bidirectional axial loads, making it ideal for compact arrangements where space is limited but performance cannot be compromised. The C3 radial internal clearance ensures optimal operation across a range of thermal and speed conditions.
1308 ETN9/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1308 | Standard bearing designation indicating 40mm bore, 90mm OD, 23mm width |
| E | Optimized internal design for enhanced load capacity |
| TN9 | Nylon cage, glass fiber reinforced, suitable for high-speed applications |
| C3 | Greater than normal radial internal clearance for thermal expansion compensation |
1308 ETN9/C3 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior stiffness compared to single row bearings, effectively supporting combined loads in demanding applications. With a dynamic load rating of 7605 lbf and static load rating of 2520 lbf, this bearing delivers reliable performance under heavy operating conditions.
High-Speed Performance: The TN9 nylon cage contributes to excellent high-speed capabilities, allowing operation up to 9,500 rpm. The lightweight cage design reduces centrifugal forces and maintains stability at elevated speeds.
Precision Engineering: Manufactured from chrome steel for both rings and balls, this bearing ensures consistent performance and long service life. The precise bearing dimensions (40mm bore × 90mm OD × 23mm width) with tight tolerances guarantee accurate fit and optimal performance.
Thermal Compensation: The C3 clearance accommodates differential thermal expansion between shaft and housing, preventing premature failure in applications with varying temperature conditions.
1308 ETN9/C3 Bearing Typical Application Areas
- Electric Motors - Main shaft support in industrial motors requiring high-speed operation
- Industrial Gearboxes - Power transmission applications demanding high rigidity
- Material Handling Equipment - Conveyor systems and pulley arrangements
- Agricultural Machinery - Implement drives and power take-off units
- Industrial Fans & Blowers - High-speed rotor support applications
- Pump Systems - Centrifugal and rotary pump applications
