1218KJ
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1218KJ
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
2.5 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.02mm to 0
Bore type
Taper 1:12
Outside diameter
160 mm
Outside diameter tolerance
-0.025mm to 0
Width
30 mm
Width tolerance
-0.2mm to 0
Chamfer dimension
2 mm
Inner Ring Dimensions
Shoulder diameter inner ring
112.5 mm
Outer Ring Dimensions
Shoulder diameter outer ring
138.7 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
12870 lbf
Radial static load rating
5310 lbf
Limiting speed
5.3 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
No drawings available at the moment, will be launched soon
Price:
$ 159.1
/ each
In Stock
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1218KJ Bearing Product Overview & Core Advantages
The 1218KJ is a metric double row angular contact ball bearing engineered for demanding applications requiring high rigidity and precision. Featuring a 1:12 tapered bore for secure shaft mounting, this bearing is designed to accommodate combined radial loads effectively. Its double row construction provides exceptional stiffness and stability, making it an ideal choice for machinery where high precision and reliability are paramount. The open design allows for versatile lubrication options to suit specific operational needs.
1218KJ Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| K | Indicates a tapered bore with a 1:12 ratio, facilitating precise axial positioning and a tight interference fit on the shaft. |
| J | Specifies the steel cage material, providing robust construction suitable for high-speed operation and demanding conditions. |
1218KJ Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing design significantly increases radial stiffness and enables the bearing to support substantial radial dynamic loads (12,870 lbf).
- Precision Tapered Bore: The 1:12 taper ensures a secure, concentric fit on the shaft, minimizing slippage and maintaining high running accuracy.
- Optimized for Performance: Manufactured from chrome steel for both rings and balls, ensuring high durability and fatigue resistance. The standard CN radial internal clearance is suited for a wide range of common industrial applications.
- Versatile Operation: With a limiting speed of 5,300 rpm and a temperature range from -30°C to 110°C, this bearing offers reliable performance under various operating conditions.
1218KJ Bearing Typical Application Areas
This double row angular contact ball bearing is widely used in applications requiring robust support and precision, such as:
- Industrial Gearboxes and Transmissions
- Machine Tool Spindles and Arbors
- Vibrating Screens and Conveyors
- Agricultural and Construction Machinery
- Pump and Compressor Systems
