1212KJ
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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1212KJ Bearing Product Overview & Core Advantages
The 1212KJ is a metric double row angular contact ball bearing designed for applications requiring high rigidity and the capacity to handle combined loads. Its double row ball construction provides superior radial load capacity while also accommodating significant axial loads in both directions. Featuring a 1:12 tapered bore for precise shaft fitting, this bearing is engineered for high precision and reliable performance in demanding industrial environments. Its compact design and robust construction make it an ideal choice for space-constrained applications.
1212KJ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1212 | Standard bore diameter code (60mm) |
| K | Tapered bore with 1:12 ratio |
| J | Specified internal clearance and tolerance |
1212KJ Bearing Structural Features & Performance Benefits
High Rigidity Design: The double row angular contact configuration provides exceptional stiffness, making it suitable for applications where shaft deflection must be minimized. This construction ensures stable operation under heavy combined loads.
Enhanced Load Capacity: Engineered to handle substantial radial loads (7020 lbf dynamic rating) while simultaneously supporting bidirectional axial forces. The optimized contact angle distribution across two rows significantly improves load distribution.
Precision Tapered Bore: The 1:12 tapered bore enables precise interference fit on the shaft, ensuring secure mounting and eliminating fretting corrosion. This feature is particularly beneficial for applications requiring high positional accuracy.
Optimized Material Selection: Constructed from chrome steel for both rings and balls, providing excellent wear resistance and durability. The pressed steel cage ensures reliable performance at the specified limiting speed of 8,000 rpm.
Standard Internal Clearance: The CN radial internal clearance provides optimal performance for most industrial applications, balancing thermal expansion considerations with operational precision requirements.
1212KJ Bearing Typical Application Areas
- Machine Tool Spindles - Where high precision and rigidity are critical
- Industrial Gearboxes - For reliable power transmission under combined loads
- Material Handling Equipment - In conveyor systems and lifting mechanisms
- Agricultural Machinery - For heavy-duty applications requiring robust bearing solutions
- Pump and Compressor Systems - Where bidirectional axial loads are present
- Electric Motors - Particularly in medium to large frame sizes requiring tapered bore mounting
