1312 EKTN9/C3
1300 Series Self Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
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1312 EKTN9/C3 Bearing Product Overview & Core Advantages
The 1312 EKTN9/C3 is a double row angular contact ball bearing designed for demanding industrial applications requiring high rigidity and superior load-carrying capacity. This precision bearing features a tapered bore (1:12) for secure shaft mounting and is pre-lubricated for immediate operation. Its double row design enables it to accommodate combined loads—significant radial loads and axial loads in both directions—simultaneously, making it an ideal solution for compact, high-performance machinery where space and reliability are critical.
1312 EKTN9/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 1312 | Standard bearing series designation, indicating bearing dimensions (60mm bore, 130mm OD). | Defines the core geometry and interchangeability. |
| EK | Tapered bore (Konus) with a taper of 1:12. | Provides a secure, interference fit on the shaft for high-precision applications. |
| TN9 | Nylon (polyamide) cage, glass fiber reinforced. | Reduces friction, allows for higher speeds, and is suitable for a wide temperature range. |
| C3 | Radial internal clearance greater than Normal (CN). | Accommodates thermal expansion in applications with high operating temperatures or heavy loads, preventing premature failure. |
1312 EKTN9/C3 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball complement and optimized raceway geometry provide exceptional stiffness, effectively resisting operational deflections. This design significantly increases the radial dynamic load rating (13,162 lbf) and enables reliable handling of combined loads.
Optimized for Performance: The TN9 nylon cage is lightweight and robust, contributing to smooth operation and a high limiting speed of 6,300 rpm. The open seal type allows for optimal lubrication flow and heat dissipation, which is crucial for maintaining performance in high-speed scenarios.
Precision & Reliability: Manufactured from chrome steel for both rings and balls, this bearing ensures high durability and long service life. The C3 internal clearance is specifically selected for applications where thermal expansion is a factor, ensuring consistent performance and preventing seizure.
1312 EKTN9/C3 Bearing Typical Application Areas
The 1312 EKTN9/C3 is engineered for robust performance in a variety of industrial settings. Key applications include:
- Electric Motors and Generators: Particularly where a tapered shaft is used for precise mounting.
- Industrial Gearboxes and Transmissions: For supporting shafts under heavy radial and axial loads.
- Material Handling Equipment: Such as conveyor pulleys and lifting mechanisms.
- Agricultural and Construction Machinery: Where high rigidity and reliability under shock loads are required.
- Vibrating Screens and Machinery: The C3 clearance is advantageous in applications with significant operational heat and vibration.
