1204KJ
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1204KJ
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.12 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.01mm to 0
Bore type
Taper 1:12
Outside diameter
47 mm
Outside diameter tolerance
-0.011mm to 0
Width
14 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
28.88 mm
Outer Ring Dimensions
Shoulder diameter outer ring
40 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2858 lbf
Radial static load rating
765 lbf
Limiting speed
20 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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1204KJ Bearing Product Overview & Core Advantages
The 1204KJ is a double row angular contact ball bearing engineered for applications demanding high rigidity and precise operation. Featuring a Metric system of measurement and an open design, this bearing excels at handling significant combined loads, including radial forces. Its compact construction, with a 20 mm bore and 47 mm outside diameter, makes it an ideal solution for space-constrained, high-performance assemblies requiring reliable support and long service life.
1204KJ Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| K | Indicates a tapered bore with a 1:12 ratio, facilitating precise interference fits on adapter sleeves or withdrawal sleeves for secure mounting. |
| J | Specifies a stamped steel cage, offering a robust and lightweight solution for guiding the balls, contributing to stable operation. |
1204KJ Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and optimized internal geometry provide exceptional stiffness, enabling the bearing to withstand substantial radial loads and moderate axial loads in both directions, making it suitable for applications with complex loading conditions.
- Precision Tapered Bore: The 1:12 tapered bore allows for precise axial adjustment and a secure, interference fit on a shaft, minimizing inner ring creep and ensuring consistent performance under high loads.
- Optimized Cage Design: The stamped steel cage (J) ensures precise ball guidance and is suitable for the bearing's limiting speed of 20,000 rpm, promoting smooth rotation and reduced friction.
- Standard Internal Clearance: The CN radial internal clearance is the standard group, providing a versatile fit for a wide range of common operating conditions and temperatures.
- Material & Compliance: Manufactured from Chrome Steel for both rings and balls, ensuring high durability and wear resistance. The bearing is compliant with ROHS and REACH regulations.
1204KJ Bearing Typical Application Areas
This bearing is ideally suited for machinery and systems requiring robust, compact, and precise rotational support. Key industries and equipment include:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General Industrial Machinery with demanding load and speed requirements
