1306 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
1306 KC3 Bearing Product Overview & Core Advantages
The 1306 KC3 is a metric double row angular contact ball bearing engineered for applications requiring high rigidity and reliable performance under combined radial and axial loads. Featuring a tapered bore (1:12) for precise mounting and a C3 radial internal clearance for optimal operation in various thermal conditions, this bearing delivers exceptional stability in demanding environments. Its double row design provides superior load-carrying capacity and stiffness compared to single row alternatives, making it ideal for precision machinery where accuracy and durability are critical.
1306 KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1306 | Standard bearing designation indicating metric dimensions: 30mm bore, 72mm OD, 19mm width |
| K | Tapered bore with 1:12 ratio for precise interference fit mounting |
| C3 | Greater than normal radial internal clearance for applications with thermal expansion or shaft misalignment |
1306 KC3 Bearing Structural Features & Performance Benefits
High Rigidity Design: The double row ball bearing configuration provides enhanced stiffness and moment load capacity, ensuring stable operation even under heavy combined loads.
Optimized Load Capacity: With a dynamic load rating of 5062 lbf and static load rating of 1530 lbf, this bearing handles significant radial forces while accommodating axial loads in both directions.
Precision Engineering: Manufactured from chrome steel with tight dimensional tolerances (bore: -0.01mm to 0) for consistent performance in precision applications.
Enhanced Thermal Performance: The C3 clearance accommodates thermal expansion, maintaining optimal performance across the operating temperature range of -30° to 110°C.
Nylon Cage Advantage: The nylon cage material provides excellent performance at the limiting speed of 13,000 rpm, offering reduced friction and quiet operation.
1306 KC3 Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- Industrial gearboxes and transmission systems
- Material handling equipment with combined loading conditions
- Agricultural machinery components
- Electric motor applications needing reliable bearing performance
- Pump and compressor systems operating under varying thermal conditions
