1209 ETN9/C3
1200 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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1209 ETN9/C3 Bearing Product Overview & Core Advantages
The 1209 ETN9/C3 is a double row angular contact ball bearing designed for applications requiring high load capacity and operational reliability. This precision bearing is engineered to accommodate combined radial and axial loads simultaneously from both directions, making it an ideal solution for compact designs. Its open construction, combined with a nylon cage and C3 radial internal clearance, facilitates high-speed operation and stable performance under varying thermal conditions. Manufactured from chrome steel, it offers excellent durability and is pre-lubricated for immediate use.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 1209 | Standard bearing series designation, indicating a metric double row angular contact ball bearing with a 45 mm bore and 85 mm outside diameter. |
| E | Optimized internal design for enhanced load capacity and performance. |
| TN9 | Indicates the use of a glass fiber reinforced nylon cage, contributing to lower friction, quieter operation, and suitability for high-speed applications. |
| C3 | Specifies a greater than normal radial internal clearance. This is beneficial for applications with significant thermal expansion or where interference fits are used, preventing premature bearing failure. |
1209 ETN9/C3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior rigidity and enables the bearing to support significant combined loads (radial and bidirectional axial loads) effectively, making it suitable for demanding applications.
- Optimized High-Speed Performance: The lightweight TN9 nylon cage minimizes centrifugal forces, reduces friction, and allows for a limiting speed of 11,000 rpm. The open design facilitates efficient lubrication management at high rotational speeds.
- Stable Operation Under Thermal Expansion: The C3 radial clearance ensures consistent performance and prevents binding in applications where operating temperatures cause shaft and housing expansion.
- Durability and Precision: Constructed from high-grade chrome steel for both rings and balls, this bearing ensures long service life and consistent operation. The precise bearing dimensions and tight tolerances guarantee reliable performance in precision machinery.
1209 ETN9/C3 Bearing Typical Application Areas
The 1209 ETN9/C3 is widely used in various industrial sectors due to its robust design and high-performance characteristics. Key application areas include:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General Industrial Machinery requiring reliable support for combination loads
