1309 KC3
1300 Series Self Aligning Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
1309 KC3 Bearing Product Overview & Core Advantages
The 1309 KC3 is a metric double row angular contact ball bearing engineered for demanding applications requiring high radial load capacity and operational stability. Featuring a tapered bore (1:12) and C3 radial internal clearance, this precision bearing delivers exceptional performance in high-speed environments while accommodating shaft expansions. Its double row design provides superior rigidity and enables handling of combined loads, making it ideal for precision machinery where reliability is critical.
1309 KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 1309 | Standard bearing series designation | Defines basic dimensions: 45mm bore, 100mm OD, 25mm width |
| K | Tapered bore (1:12 ratio) | Enables precise mounting on tapered shafts, accommodates thermal expansion |
| C3 | Greater than normal radial internal clearance | Optimized for high-speed applications and thermal expansion conditions |
1309 KC3 Bearing Structural Features & Performance Benefits
Double Row Design: The two rows of balls provide enhanced stiffness and load distribution, significantly improving bearing stability under heavy radial loads and moderate axial loads in both directions.
Tapered Bore Configuration: The 1:12 taper enables precise interference fit mounting, ensuring secure shaft positioning and compensating for thermal expansion during high-speed operation.
High-Speed Capability: With a limiting speed of 8,500 rpm and nylon cage construction, this bearing maintains stable performance at elevated rotational speeds while reducing friction and heat generation.
Precision Engineering: Manufactured from chrome steel with tight dimensional tolerances, the bearing delivers consistent performance and long service life in demanding industrial environments.
1309 KC3 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers requiring rigid support and thermal stability
- Industrial Gearboxes: Power transmission systems demanding high radial load capacity
- Material Handling Equipment: Conveyor systems and rotating machinery needing reliable bearing performance
- Agricultural Machinery: Heavy-duty equipment requiring robust bearing solutions with tapered bore mounting
- Industrial Pumps and Compressors: Applications where combined loads and high-speed operation are common
