1308 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
1308 KC3 Bearing Product Overview & Core Advantages
The 1308 KC3 is a double row angular contact ball bearing engineered for demanding applications requiring high rigidity and precise operation. This metric bearing features a tapered bore (1:12) for secure mounting on adapter sleeves or withdrawal sleeves, ensuring a tight fit and excellent rotational accuracy. Its double-row design enables it to support substantial combined loads—simultaneously handling significant radial forces and moderate axial loads in both directions. Manufactured with chrome steel rings and balls, and a lightweight nylon cage, it is optimized for high-speed operation and reliable performance in a wide temperature range. The open design and C3 radial internal clearance make it suitable for applications with thermal expansion or heavy load conditions.
1308 KC3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 1308 | Standard bearing series designation, indicating the core dimensions (40mm bore, 90mm OD). | Defines the fundamental bearing size and geometry. |
| K | Tapered bore with a conicity of 1:12. | Facilitates precise axial positioning and a secure interference fit on a shaft, enhancing stability. |
| C3 | Radial internal clearance greater than normal (CN). | Accommodates thermal expansion in the shaft or housing, preventing preload and ensuring smooth operation under heavy loads or at elevated temperatures. |
1308 KC3 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement provides a robust, compact solution with significantly higher radial dynamic load rating (7605 lbf) and static load capacity compared to single-row bearings, making it ideal for applications with significant combined loads.
- Optimized for High Speeds: The lightweight nylon cage reduces centrifugal forces and friction, contributing to a high limiting speed of 9,500 rpm. This makes the bearing an excellent choice for high-speed applications.
- Tapered Bore for Secure Mounting: The 1:12 tapered bore allows for precise axial adjustment and a tight interference fit, minimizing inner ring creep and ensuring true running accuracy.
- Operational Versatility: The C3 clearance provides operational flexibility in environments prone to thermal expansion. The bearing is pre-lubricated for immediate use and operates effectively within a temperature range of -30°C to 110°C.
1308 KC3 Bearing Typical Application Areas
The 1308 KC3 is a versatile component suited for a range of industrial machinery where reliability under combined loads and high speeds is critical. Key application areas include:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- Ventilation and Fan Systems
