1209K
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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1209K Bearing Product Overview & Core Advantages
The 1209K is a metric double row angular contact ball bearing designed for applications requiring high radial load capacity and precise operation. Featuring a 1:12 tapered bore for secure shaft mounting, this bearing delivers exceptional rigidity and rotational accuracy. Its double row ball construction enables it to handle significant radial loads while maintaining stable performance. Manufactured from chrome steel with a nylon cage, it offers reliable operation in demanding environments and comes pre-lubricated for immediate use.
1209K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1209 | Standard bearing series designation indicating dimensions: 45mm bore, 85mm OD, 19mm width |
| K | Tapered bore with 1:12 taper ratio for precise mounting and positioning |
| Open | No seals or shields, allowing for relubrication and optimal heat dissipation |
| CN | Normal radial internal clearance for most industrial applications |
1209K Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The double row ball bearing configuration provides superior stiffness compared to single row designs, minimizing deflection under heavy radial loads.
Precision Tapered Bore: The 1:12 taper enables precise interference fit on tapered shafts, ensuring secure mounting and eliminating creep in high-torque applications.
Optimized Cage Design: The nylon cage offers excellent performance at high speeds (up to 11,000 rpm), providing reduced friction and quiet operation.
Superior Material Quality: Manufactured from chrome steel rings and balls, this bearing delivers high durability and wear resistance across the operating temperature range of -30°C to 110°C.
1209K Bearing Typical Application Areas
- Industrial Gearboxes and transmission systems
- Machine Tool Spindles requiring high precision and rigidity
- Material Handling Equipment such as conveyor systems
- Agricultural Machinery and implement drives
- Electric Motors and industrial fans
- Pump Systems requiring reliable radial load support
