1211 ETN9
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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1211 ETN9 Bearing Product Overview & Core Advantages
The 1211 ETN9 is a double row angular contact ball bearing engineered for superior performance in demanding applications. This precision bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and moderate axial loads in both directions. Its compact design, featuring a 55 mm bore and 100 mm outside diameter, offers a space-saving solution without compromising on load capacity or rigidity. Manufactured with high-grade chrome steel and a robust nylon cage, it delivers high reliability and is pre-lubricated for immediate use, making it an ideal choice for applications requiring high rigidity and dependable operation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 1211 | Standard bearing designation indicating a metric double row angular contact ball bearing with a 55 mm bore diameter and 100 mm outside diameter. |
| E | Optimized internal design for enhanced load capacity and performance. |
| TN9 | Indicates a glass fiber reinforced polyamide (nylon) cage. This cage design is lightweight, promotes lower friction, and is ideal for high-speed operation. |
1211 ETN9 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling the bearing to effectively support combined loads. With a dynamic load rating of 6210 lbf and a static load rating of 2385 lbf, it is built for durability under significant stress.
- Optimized High-Speed Performance: The lightweight TN9 nylon cage reduces centrifugal forces and inertial mass, allowing for a high limiting speed of 9,000 rpm. This makes it a true high-speed bearing for demanding rotational applications.
- Precision & Reliability: Manufactured from high-carbon chrome steel for both rings and balls, the bearing ensures consistent performance and long service life. The open seal type allows for easy re-lubrication in specific application setups.
- Ready-to-Use Convenience: The bearing comes pre-lubricated, facilitating quick installation and immediate operation, reducing machine setup time.
1211 ETN9 Bearing Typical Application Areas
The 1211 ETN9 is suited for a wide range of industrial machinery where precision, speed, and reliability are paramount. Key application sectors include:
- Electric Motors and Gearboxes
- Material Handling Equipment (e.g., conveyor systems)
- Pumps and Compressors
- Agricultural Machinery
- General Industrial Machinery requiring robust bearing dimensions and high performance.
