1307 EKTN9/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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1307 EKTN9/C3 Bearing Product Overview & Core Advantages
The 1307 EKTN9/C3 is a double row angular contact ball bearing designed for applications requiring exceptional rigidity and the ability to handle combined loads. Featuring a metric tapered bore (1:12) and an open design, it delivers high precision and reliability. This bearing is pre-lubricated and features a C3 radial internal clearance, making it suitable for applications with thermal expansion or where increased operational clearance is beneficial. Its compact bearing dimensions (35mm bore, 80mm OD, 21mm width) and robust construction make it an ideal choice for demanding industrial environments.
1307 EKTN9/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1307 | Standard bearing series designation, indicating the core dimensions. |
| EK | Designates an optimized internal design and a tapered bore (1:12). |
| TN9 | Indicates the cage is made from glass fiber reinforced polyamide (Nylon), contributing to lower friction, lighter weight, and suitability for high-speed operation. |
| /C3 | Specifies a greater than normal radial internal clearance. This is crucial for applications where thermal expansion is a factor or where a looser fit is required, preventing seizure and ensuring smooth operation. |
1307 EKTN9/C3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball construction provides superior rigidity and enables the bearing to support significant combined radial and axial loads simultaneously, offering stable performance under complex loading conditions.
- High-Speed Performance: The lightweight TN9 polymer cage reduces centrifugal forces, minimizes friction, and allows for a limiting speed of 11,000 rpm, making it an excellent high-speed bearing.
- Tapered Bore for Secure Mounting: The EK-designated tapered bore allows for precise axial positioning and a secure interference fit on tapered shafts or adapter sleeves, eliminating creep and ensuring maximum power transmission.
- Optimized for Operational Conditions: The C3 clearance accommodates thermal expansion from high-speed operation or differential heating between the bearing and housing, preventing pre-load and potential damage.
1307 EKTN9/C3 Bearing Typical Application Areas
The 1307 EKTN9/C3 is engineered for high-performance applications across various sectors, including:
- Electric Motors & Generators: Ideal for main shafts requiring high speed and load capacity.
- Industrial Gearboxes: Provides reliable support for gears transmitting high torque.
- Material Handling Equipment: Used in conveyor pulleys and other high-demand components.
- Agricultural Machinery: Suitable for PTO shafts and other driveline applications.
- Ventilation & Fan Systems: Its high-speed capability makes it perfect for demanding fan shafts.
