1215KC3
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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1215KC3 Bearing Product Overview & Core Advantages
The 1215KC3 is a metric double row angular contact ball bearing engineered for applications requiring high rigidity and precise operation. Featuring a tapered bore (1:12) and C3 radial internal clearance, this bearing is optimized to handle significant combined loads—simultaneously supporting substantial radial forces. Its double row design provides enhanced stiffness and load-carrying capacity in a compact cross-section, making it ideal for high-precision machinery and demanding industrial environments. The bearing comes pre-lubricated and is manufactured from high-grade chrome steel for durability and reliable performance.
1215KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1215 | Standard bearing series designation indicating specific bearing dimensions: 75mm bore, 130mm OD, 25mm width. |
| K | Tapered bore with a 1:12 ratio, facilitating precise mounting and dismounting on adapter sleeves or withdrawal sleeves. |
| C3 | Greater than normal radial internal clearance, suitable for applications with thermal expansion or where interference fits are used. |
1215KC3 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball bearing construction provides superior stiffness and enables the bearing to handle significant radial dynamic loads (8775 lbf) and radial static loads (3510 lbf). This makes it exceptionally robust for applications with heavy or fluctuating loads.
Precision Tapered Bore: The 1:12 tapered bore allows for accurate axial positioning and secure shaft locking when used with appropriate adapter sleeves, ensuring minimal runout and vibration.
Optimized Material Selection: The combination of chrome steel rings and balls with a stainless steel cage offers excellent corrosion resistance and operational reliability, contributing to a limiting speed of 6,700 rpm.
Pre-Lubricated & Ready-to-Use: Factory-applied lubrication ensures immediate operation and reduces initial maintenance requirements within the specified temperature range of -30°C to 110°C.
1215KC3 Bearing Typical Application Areas
- Industrial Gearboxes and Transmissions
- Material Handling Equipment (conveyors, pulleys)
- Agricultural Machinery
- Vibrating Screens and Shakers (benefiting from the C3 clearance)
- Electric Motors and Generators
