1211TN
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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1211TN Bearing Product Overview & Core Advantages
The 1211TN metric double row angular contact ball bearing represents a precision-engineered solution for applications requiring high rigidity and reliable performance under combined loads. Its double row design enables it to accommodate significant radial loads along with bidirectional axial loads simultaneously, making it ideal for compact arrangements where space is limited. Manufactured with chrome steel rings and balls, and featuring a nylon cage, this bearing delivers exceptional durability and smooth operation. The optimized internal geometry and CN radial internal clearance ensure consistent performance in demanding environments.
1211TN Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1211 | Standard bearing designation indicating 55 mm bore diameter, 100 mm outside diameter, and 21 mm width |
| TN | Nylon (polyamide) cage, injection molded, providing excellent high-speed capability and reduced friction |
| Open (No Seal) | Open construction allows for custom lubrication schemes and maximum speed performance |
1211TN Bearing Structural Features & Performance Benefits
High Rigidity Design: The double row construction provides enhanced stiffness compared to single row bearings, making it suitable for applications requiring precise shaft positioning and minimal deflection under load.
Superior Load Capacity: Engineered to handle combined radial and axial loads from both directions, with a dynamic load rating of 6210 lbf and static load rating of 2385 lbf, ensuring reliable performance in demanding conditions.
Optimized High-Speed Performance: The TN nylon cage reduces rotational mass and friction, enabling operation at limiting speeds up to 9,000 rpm while maintaining stability and reducing heat generation.
Precision Engineering: Manufactured with tight dimensional tolerances (bore and outside diameter: -0.015mm to 0) and CN radial internal clearance for consistent performance in precision applications.
Material Excellence: Constructed from high-quality chrome steel for both rings and balls, providing excellent wear resistance and fatigue strength, complemented by the lightweight nylon cage for reduced inertial forces.
1211TN Bearing Typical Application Areas
- Electric Motors and motorized spindles requiring high-speed operation
- Industrial Gearboxes and transmission systems
- Machine Tool Components including spindles and positioning systems
- Material Handling Equipment such as conveyor systems and rollers
- Agricultural Machinery and implement drives
- Pump Systems and compressor applications
- Precision Instrumentation requiring reliable rotational accuracy
