1211C3
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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1211C3 Bearing Product Overview & Core Advantages
The 1211C3 is a double row angular contact ball bearing designed for applications requiring high load capacity and operational reliability. As a metric bearing with an open design, it excels in handling significant combined loads—simultaneously supporting substantial radial forces and moderate axial loads in both directions. Its compact bearing dimensions (55mm bore, 100mm OD, 21mm width) and robust construction make it an ideal precision bearing for demanding industrial environments. The specified C3 radial internal clearance ensures optimal performance under varying thermal conditions, making it suitable for applications with expected operational heat generation.
1211C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 12 | Series designation indicating light radial load capacity and specific dimensional series | Optimized for space-constrained applications |
| 11 | Bore diameter code (55mm) | Standard metric bore size for shaft mounting |
| C3 | Radial internal clearance greater than normal | Accommodates thermal expansion in high-speed or high-temperature applications |
1211C3 Bearing Structural Features & Performance Benefits
Double Row Construction: The double row ball bearing design provides high rigidity and enhanced load distribution, significantly increasing bearing life under heavy combined loads.
Superior Load Capacity: With a dynamic load rating of 6210 lbf and static load rating of 2385 lbf, this bearing handles demanding operational conditions while maintaining precision.
Optimized High-Speed Performance: The nylon cage material reduces friction and enables smooth operation at limiting speeds up to 9,000 rpm, making it suitable for high-speed applications.
Precision Engineering: Manufactured from chrome steel for both rings and balls, ensuring consistent performance and extended service life in industrial environments.
Thermal Adaptability: The C3 clearance accommodates differential expansion between shaft and housing, preventing binding during temperature fluctuations within the -30° to 110°C operating range.
1211C3 Bearing Typical Application Areas
- Industrial Gearboxes: Provides reliable support for transmission shafts under combined radial and axial loads
- Electric Motors: Ideal for motor applications requiring high-speed operation and thermal stability
- Material Handling Equipment: Conveyor systems and pulley mechanisms benefiting from high load capacity
- Agricultural Machinery: Implements and power transmission systems in demanding environments
- Industrial Pumps and Compressors: Handles combined loads in fluid handling equipment
- General Industrial Machinery: Various applications requiring precision bearings with C3 clearance for thermal management
