1212 KC3
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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1212 KC3 Bearing Product Overview & Core Advantages
The 1212 KC3 is a double row angular contact ball bearing designed for exceptional performance in demanding applications. This metric bearing features a tapered bore (1:12) for secure mounting on adapter sleeves or withdrawal sleeves, ensuring precise alignment and reliable operation. Its core advantages include the ability to accommodate combined loads (significant radial and moderate axial loads in both directions), high operational stability due to its double-row design, and a generous C3 radial internal clearance suitable for applications with thermal expansion or heavy interference fits. Manufactured from high-grade chrome steel, it offers excellent durability and is pre-lubricated for immediate use, making it a robust and reliable choice for industrial machinery.
1212 KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1212 | Standard bearing designation indicating the bore diameter (60 mm) and size series. |
| K | Denotes a tapered bore with a 1:12 ratio. |
| C3 | Indicates a greater than normal radial internal clearance. This is crucial for applications involving thermal expansion or where fits create a reduction in internal clearance. |
1212 KC3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides superior rigidity and enables the bearing to support substantial radial dynamic loads (7020 lbf) and radial static loads (2745 lbf), as well as axial loads from both directions.
- Optimized for Secure Mounting: The tapered bore ensures a tight, slip-free fit on a shaft when used with the appropriate sleeve, enhancing operational stability and precision.
- Enhanced Operational Range: The specified C3 clearance allows for a wider temperature range and accommodates dimensional changes from press-fits, preventing premature failure due to excessive preload.
- High-Speed Capability & Lightweight Cage: The nylon cage contributes to smooth operation at the limiting speed of 8,000 rpm, offering low friction and excellent acceleration characteristics.
- Pre-Lubricated & Ready-to-Install: Arrives lubricated, simplifying installation and providing immediate protection against wear.
1212 KC3 Bearing Typical Application Areas
- Electric Motors & Generators: Particularly those with sleeve-mounted rotor shafts.
- Vibrating Screens & Conveyors: Where the C3 clearance accommodates dynamic loads and vibrations.
- Agricultural Machinery: For gearboxes, pulleys, and other high-load components.
- Material Handling Equipment: Such as pulley systems and rolling mill roll-necks.
- Industrial Fans & Blowers: Providing stable support for fan shafts.
