1211KJ
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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1211KJ Bearing Product Overview & Core Advantages
The 1211KJ is a double row angular contact ball bearing engineered for applications requiring high rigidity and the ability to support combined loads. Featuring a tapered bore (1:12), this precision bearing is designed for precise shaft positioning and offers excellent operational stability. Its open design, when paired with the appropriate adapter sleeve, facilitates easy mounting and dismounting, making it a reliable choice for demanding industrial environments.
1211KJ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1211 | Standard bore diameter code (55 mm) and dimension series. |
| K | Indicates a tapered bore with a 1:12 ratio, designed for use with an adapter sleeve on a cylindrical shaft. |
| J | Specifies a steel cage pressed from sheet steel, offering robustness and reliability. |
1211KJ Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball construction provides superior rigidity and enables the bearing to accommodate significant radial loads and moderate axial loads in both directions simultaneously.
Precision Tapered Bore: The K-suffix tapered bore ensures a secure, interference fit when mounted with an adapter sleeve, eliminating fretting corrosion and enhancing running accuracy.
Optimized for Performance: Manufactured from chrome steel for both rings and balls, the bearing ensures high durability and a long service life. The standard CN radial internal clearance is suitable for most common operating conditions.
Operational Versatility: With a limiting speed of 9,000 rpm and a broad operating temperature range from -30°C to 110°C, this bearing is versatile for various high-speed applications. It comes lubricated from the factory for immediate use.
1211KJ Bearing Typical Application Areas
The 1211KJ is ideally suited for machinery and systems where high radial load capacity and precise shaft location are critical. Common applications include:
- Electric Motors and Generators
- Vibrating Screens and Conveyors
- Agricultural Machinery
- Material Handling Equipment
- Pillow Block Housings with adapter sleeves
