1215 K/C3
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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1215 K/C3 Bearing Product Overview & Core Advantages
The 1215 K/C3 is a double row angular contact ball bearing designed for demanding applications requiring high rigidity and precise operation. This metric bearing features a tapered bore (1:12) for secure shaft mounting and is pre-lubricated for immediate use. Its double row design enables it to support significant combined loads—both radial and axial forces—simultaneously, making it an ideal choice for high-performance machinery. The specified C3 radial internal clearance makes it particularly suitable for applications with elevated operational temperatures or where interference fits are used, ensuring reliable performance and extended service life.
1215 K/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 1215 | Basic bearing designation | Defines the standard metric dimensions: 75mm bore, 130mm OD, 25mm width. |
| K | Tapered bore (1:12) | Facilitates precise and secure mounting on adapter sleeves or tapered shafts. |
| C3 | Greater than normal radial internal clearance | Accommodates thermal expansion and interference fits, preventing premature failure. |
1215 K/C3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides superior stiffness, enabling stable operation under heavy combined loads. With a dynamic load rating of 8775 lbf and static load rating of 3510 lbf, it delivers robust performance in demanding conditions.
- Precision Tapered Bore: The K-designation tapered bore ensures a tight, concentric fit on the shaft, minimizing vibration and enhancing rotational accuracy.
- Optimized Material Selection: Chrome steel rings and balls, combined with a nylon cage, reduce friction and wear. The cage contributes to smooth operation and is suitable for the bearing's limiting speed of 6,700 rpm.
- Pre-Lubricated & Ready-to-Use: Factory-applied lubrication allows for immediate installation and operation within a temperature range of -30°C to 110°C.
1215 K/C3 Bearing Typical Application Areas
The 1215 K/C3 is engineered for applications requiring high precision and reliability under significant loads. Common uses include:
- Industrial Gearboxes and power transmission systems
- Material Handling Equipment such as conveyor pulleys
- Agricultural Machinery including tractor transmissions
- Pump and Compressor assemblies
- Heavy-duty industrial fans and blowers
