1308K
1300 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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1308K Bearing Product Overview & Core Advantages
The 1308K metric series bearing is a double row angular contact ball bearing designed for exceptional performance in demanding applications. Its core advantage lies in its ability to simultaneously support substantial combined loads—both radial and axial forces—delivering high rigidity and stable rotational accuracy. Featuring a tapered bore for precise mounting on adapter sleeves, this bearing is engineered for reliability in high-precision machinery where compact design and robust load capacity are critical.
1308K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 1308 | Standard bearing designation indicating a 40 mm bore, 90 mm OD, and 23 mm width. |
| K | Denotes a tapered bore with a 1:12 ratio, facilitating secure mounting on an adapter sleeve. |
| Open (Seal Type) | No integral seals or shields, allowing for higher speeds and custom lubrication schemes. |
| CN (Clearance) | Specifies standard radial internal clearance for normal operating conditions. |
| Nylon Cage | Lightweight cage material contributing to high-speed capability and reduced friction. |
1308K Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior rigidity and enables the bearing to handle significant combined radial and axial loads simultaneously, making it ideal for applications with complex loading patterns.
Precision Tapered Bore: The 1:12 tapered bore ensures a tight, interference fit when mounted with an adapter sleeve, eliminating internal clearance and enhancing system stability and running accuracy.
Optimized for High Speeds: The lightweight nylon cage minimizes centrifugal forces, reduces friction, and allows for a limiting speed of 9,500 rpm, qualifying it as a capable high-speed bearing.
Durable Material Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high load ratings (7,605 lbf dynamic, 2,520 lbf static) and excellent wear resistance.
1308K Bearing Typical Application Areas
The 1308K bearing is ideally suited for a range of industrial machinery requiring high precision and reliability. Key application areas include:
- Electric Motors and Gearboxes
- Material Handling Conveyors
- Industrial Fans and Blowers
- Agricultural Machinery
- Pump Systems
