1220K
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1220K
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
3.7 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.02mm to 0
Bore type
Taper 1:12
Outside diameter
180 mm
Outside diameter tolerance
-0.025mm to 0
Width
34 mm
Width tolerance
-0.2mm to 0
Chamfer dimension
2.1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
127 mm
Outer Ring Dimensions
Shoulder diameter outer ring
155.8 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
6750 lbf
Limiting speed
4.8 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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1220K Bearing Product Overview & Core Advantages
The 1220K metric double row angular contact ball bearing is engineered for applications requiring superior rigidity and precise operation under combined radial and axial loads. Featuring a 1:12 tapered bore for secure shaft mounting, this precision bearing is manufactured from high-grade chrome steel and is pre-lubricated for immediate use. Its double row design provides high load-carrying capacity and stiffness, making it an ideal solution for demanding industrial machinery where high reliability and dimensional accuracy are paramount.
1220K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1220 | Standard bearing series designation, indicating bearing dimensions (100mm bore, 180mm OD). |
| K | Denotes a tapered bore with a 1:12 taper ratio for precise interference fit on adapter sleeves or withdrawal sleeves. |
1220K Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides significantly higher rigidity and can support substantial combined radial and axial loads simultaneously, ensuring stable performance in heavy-duty applications.
- Precision Tapered Bore: The 1:12 tapered bore ensures a tight, secure fit on the shaft, minimizing inner ring creep and maintaining precise alignment for optimal performance.
- Optimized for High-Speed Operation: The stainless steel cage ensures low friction and reliable operation at the specified limiting speed of 4,800 rpm, contributing to its classification as a high-speed bearing.
- Ready-to-Install & Durable: The bearing is supplied pre-lubricated and features an open seal type, allowing for easy re-lubrication in service. Manufactured from chrome steel with a standard CN radial internal clearance, it offers a long service life within a temperature range of -30°C to 110°C.
1220K Bearing Typical Application Areas
This bearing is ideally suited for applications requiring high precision and robust performance, including:
- Industrial Gearboxes and power transmission systems
- Vibrating Screens and other material handling equipment
- Pump and Compressor shafts
- Agricultural Machinery and heavy-duty off-road vehicles
- Machinery utilizing adapter sleeve mounting systems
