1218 K
1200 Series Self Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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1218 K Bearing Product Overview & Core Advantages
The 1218 K is a double row angular contact ball bearing designed for applications requiring high radial load capacity and compact design. As a metric bearing with an open construction, it delivers reliable performance in a wide range of industrial settings. Its primary advantage lies in its ability to support significant radial loads, making it an excellent choice for scenarios where space is constrained but demanding load requirements must be met. Manufactured from high-grade chrome steel and featuring a nylon cage, this bearing offers a robust and durable solution for general machinery.
1218 K Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 1218 | Standard bearing series designation, indicating the bore diameter (90 mm), outside diameter (160 mm), and width (30 mm). |
| K | Indicates a tapered bore (conicity 1:12). This design facilitates precise mounting and dismounting on adapter sleeves or withdrawal sleeves, allowing for a secure interference fit on the shaft. |
1218 K Bearing Structural Features & Performance Benefits
- High Load Capacity & Rigidity: The double row ball construction provides superior radial dynamic load rating of 12,870 lbf and radial static load rating of 5,310 lbf, enabling the bearing to handle heavy loads with high rigidity and stability.
- Optimized for Mounting: The tapered bore (K-designation) allows for precise axial adjustment and a secure fit, simplifying installation and ensuring optimal performance.
- High-Speed Capability: The lightweight nylon cage minimizes centrifugal forces, contributing to a high limiting speed of 5,300 rpm, suitable for various high-speed applications.
- Material & Lubrication: Components made from chrome steel offer excellent wear resistance and durability. The bearing is supplied lubricated, ensuring immediate operational readiness and a broad temperature range from -30°C to 110°C.
1218 K Bearing Typical Application Areas
The 1218 K bearing is ideally suited for a variety of industrial machinery and equipment, including:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Material Handling Conveyors
- Agricultural Machinery
- Industrial Fans and Blowers
Its combination of high radial load capacity, compact dimensions, and tapered bore makes it particularly valuable in applications requiring a secure shaft fit and reliable performance under significant radial forces.
