1211 C3
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1211 C3
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.71 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.015mm to 0
Bore type
Cylindrical
Outside diameter
100 mm
Outside diameter tolerance
-0.015mm to 0
Width
21 mm
Width tolerance
-0.15mm to 0
Chamfer dimension
1.5 mm
Inner Ring Dimensions
Shoulder diameter inner ring
70.3 mm
Outer Ring Dimensions
Shoulder diameter outer ring
86.5 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6210 lbf
Radial static load rating
2385 lbf
Limiting speed
9 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
C3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Nylon
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 50.11
/ each
In Stock
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1211 C3 Bearing Product Overview & Core Advantages
The 1211 C3 is a double row angular contact ball bearing designed for exceptional performance in demanding applications. This precision bearing excels at simultaneously handling significant combined loads, including radial forces and bidirectional axial loads. Its compact double row construction provides superior rigidity and rotational accuracy, making it an ideal choice for machinery requiring high reliability and stability. The open design, combined with a C3 radial internal clearance, ensures optimal performance under varying thermal and load conditions.
1211 C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1211 | Standard bearing designation indicating a metric double row angular contact ball bearing with a 55mm bore diameter. |
| C3 | Specifies a greater than normal radial internal clearance. This is critical for applications with thermal expansion, high-speed operation, or where fits create preload, preventing seizure and ensuring smooth operation. |
1211 C3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball construction provides a significantly stiffer support system compared to single row bearings, enabling it to handle heavy combined loads with minimal deflection.
- Optimized for Performance: The nylon cage ensures smooth operation at high speeds with reduced friction and excellent guidance for the balls. The chrome steel rings and balls provide high durability and wear resistance.
- Operational Versatility: The specified C3 clearance accommodates shaft and housing fits that might otherwise reduce internal clearance, making it suitable for applications with expected thermal gradients or heavy loads.
- High-Speed Capability: With a limiting speed of 9,000 rpm and a lightweight cage, this bearing is engineered for high-speed applications.
1211 C3 Bearing Typical Application Areas
This 1211 C3 bearing is ideally suited for a wide range of industrial machinery, including:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General machinery requiring robust support for combination loads.
