1211
1200 Series Self Aligning Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
1211
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
CN
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:
$ 30.77
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
1211 Bearing Product Overview & Core Advantages
The 1211 double row angular contact ball bearing is a precision bearing engineered for applications requiring high rigidity and reliable performance under combined loads. Its double row design enables it to accommodate significant radial loads while simultaneously handling bidirectional axial loads, making it an ideal compact solution for space-constrained, high-performance assemblies. Manufactured with chrome steel rings and balls, it offers excellent durability and is pre-lubricated for immediate use.
1211 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 12 | Series designation, indicating a specific internal geometry and load capacity. |
| 11 | Bore diameter code. For this metric bearing, it corresponds to a 55 mm bore diameter. |
| (No Seal Suffix) | The open (unsealed) construction allows for higher limiting speeds and is suitable for systems with external lubrication. |
1211 Bearing Structural Features & Performance Benefits
- High Rigidity: The double row ball complement provides superior radial and axial stiffness, ensuring stable shaft support and minimizing deflection under heavy combined loads.
- Optimized Load Capacity: Engineered to handle substantial radial loads (Dynamic: 6210 lbf, Static: 2385 lbf) and bidirectional axial loads simultaneously, making it versatile for complex loading conditions.
- High-Speed Capability: The lightweight nylon cage ensures smooth operation and contributes to a high limiting speed of 9,000 rpm, reducing centrifugal forces and friction.
- Precision & Reliability: Manufactured with tight dimensional tolerances (bore/OD: -0.015mm to 0) and a standard CN radial internal clearance, this bearing delivers consistent, high-precision performance.
- Material Integrity: Constructed from chrome steel for both rings and balls, offering high wear resistance and long service life.
1211 Bearing Typical Application Areas
The 1211 bearing is suited for a wide range of industrial machinery and precision equipment, including:
- Industrial Gearboxes and Transmissions
- Medium-duty Pumps and Compressors
- Material Handling Conveyor Systems
- Electric Motors and Generators
- Agricultural Machinery
- General Industrial Machinery requiring robust bearing dimensions (55mm x 100mm x 21mm)
