1209KTNC3
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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1209KTNC3 Bearing Product Overview & Core Advantages
The 1209KTNC3 is a metric double row angular contact ball bearing engineered for applications demanding high rigidity and reliable performance under combined radial loads. Featuring a 1:12 tapered bore for precise shaft fitting, this bearing offers superior running accuracy. Its open design, coupled with a nylon cage and C3 radial internal clearance, makes it well-suited for moderate to high-speed operations where thermal expansion must be accommodated. The bearing is pre-lubricated for immediate use and constructed from durable chrome steel for extended service life in industrial environments.
1209KTNC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1209 | Standard bore diameter (45 mm) and series designation |
| K | Tapered bore with 1:12 ratio |
| TN | Nylon cage for reduced weight and smooth operation |
| C3 | Greater radial internal clearance than normal, suitable for applications with thermal expansion |
1209KTNC3 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball bearing construction provides enhanced rigidity and enables the bearing to support significant radial loads (dynamic rating: 5152 lbf).
Precision & Speed: The 1:12 tapered bore ensures a secure and precise interference fit on the shaft, enhancing system stability. The lightweight nylon cage facilitates high-speed operation up to 11,000 rpm, reducing centrifugal forces and friction.
Operational Reliability: The specified C3 clearance accommodates differential thermal expansion between the bearing and housing, preventing preload under operating temperatures. The bearing comes pre-lubricated, simplifying installation and providing immediate protection.
1209KTNC3 Bearing Typical Application Areas
This bearing is ideal for a range of industrial machinery requiring robust performance and precision, including:
- Electric Motors and Gearboxes
- Industrial Fans and Blowers
- Material Handling Equipment
- Agricultural Machinery
