1211 K
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1211 K
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
Taper 1:12
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:
$ 50.11
/ each
In Stock
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1211 K Bearing Product Overview & Core Advantages
The 1211 K is a double row angular contact ball bearing designed for applications requiring robust support for combined loads. Its metric design with a tapered bore (1:12) facilitates precise mounting and secure shaft fixation. This bearing excels in providing high rigidity and stable operation, making it a reliable choice for demanding industrial environments. The open design allows for versatile lubrication options, contributing to its adaptability and long service life under specified operating conditions.
1211 K Bearing Model Code Explained, Specifications & Naming Convention
| Model Suffix | Technical Meaning |
|---|---|
| 1211 | Standard bore diameter code (55 mm) and dimension series. |
| K | Indicates a tapered bore with a 1:12 ratio, enabling precise interference fit on adapter sleeves or withdrawal sleeves for secure mounting. |
1211 K Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and optimized internal geometry provide superior high rigidity, enabling the bearing to effectively support significant radial loads and moderate axial loads in both directions.
- Precision Tapered Bore: The K suffix designation signifies the tapered bore, which ensures a tight, slip-free fit on the shaft when used with appropriate adapter sleeves, enhancing operational stability.
- Optimized Cage & Speed: The Nylon cage contributes to smooth operation, low noise, and is suitable for the bearing's limiting speed of 9,000 rpm. It offers good performance in lubricated applications.
- Standard Internal Clearance & Material: Manufactured from Chrome Steel for both rings and balls, the bearing comes with a standard CN radial internal clearance, making it suitable for a wide range of common applications.
1211 K Bearing Typical Application Areas
This bearing is ideally suited for machinery and systems where high radial load capacity and secure shaft location are paramount. Common applications include:
- Industrial Gearboxes
- Vibrating Screens and Conveyors
- Agricultural Machinery
- Material Handling Equipment
- Pump and Fan Arrangements utilizing adapter sleeves for mounting
