1207KJ
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1207KJ
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.32 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.012mm to 0
Bore type
Taper 1:12
Outside diameter
72 mm
Outside diameter tolerance
-0.013mm to 0
Width
17 mm
Width tolerance
-0.12mm to 0
Chamfer dimension
1.1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
47 mm
Outer Ring Dimensions
Shoulder diameter outer ring
60.9 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4275 lbf
Radial static load rating
1350 lbf
Limiting speed
13 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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1207KJ Bearing Product Overview & Core Advantages
The 1207KJ is a double row angular contact ball bearing designed for applications requiring high load capacity and rigidity. This precision bearing features a tapered bore (1:12) and is pre-lubricated for immediate operation. Its double row design enables it to accommodate significant combined loads—both radial and axial forces—simultaneously, making it exceptionally robust. With a compact cross-section and manufactured from high-grade chrome steel, it delivers reliable performance in demanding environments where space and high rigidity are critical.
1207KJ Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| K | Indicates a tapered bore with a 1:12 ratio, designed for precise mounting on adapter sleeves or withdrawal sleeves for secure shaft fixation. |
| J | Signifies the use of a steel cage, pressed from sheet steel, providing high strength and suitability for a wide range of operating conditions. |
1207KJ Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball construction provides superior stiffness and enables the bearing to handle substantial combined radial and axial loads simultaneously, far exceeding the capacity of single row designs.
- Precision Tapered Bore: The K designation for the 1:12 tapered bore allows for precise axial positioning and a tight, interference fit on the shaft when used with an adapter sleeve, minimizing inner ring creep and ensuring stable operation.
- Optimized for Speed: The pressed steel cage (J) contributes to lower friction and stable operation, supporting the bearing's high limiting speed of 13,000 rpm.
- Ready-to-Install: The bearing comes pre-lubricated and with an open seal type, making it immediately operational while allowing for the possibility of re-lubrication in specific applications to extend service life.
- Standardized Internal Clearance: The CN radial internal clearance is the standard group, offering a versatile fit for a wide array of general applications.
1207KJ Bearing Typical Application Areas
This bearing is ideally suited for industrial machinery and equipment where high load capacity, rigidity, and reliability are paramount. Key applications include:
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Conveyors
- Agricultural Machinery
- Electric Motors requiring a secure shaft fit
