308
With Filling Slots Deep Groove Bearings
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Basic Information
Main Dimensions
Performance
Materials
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308 Bearing Product Overview & Core Advantages
The 308 metric ball bearing is a single row deep groove ball bearing engineered for superior performance in handling radial loads. Constructed with high-grade chrome steel rings and balls, this open-type bearing is designed for applications requiring reliable operation and long service life. Its P0 tolerance class ensures consistent quality and interchangeability, making it a versatile and dependable component for a wide range of industrial machinery. The optimized internal geometry contributes to low friction and efficient operation.
308 Bearing Model Code Explained, Specifications & Naming Convention
The model number 308 follows a standard industry designation. A breakdown of its key characteristics, based on the provided specifications, is as follows:
- 308: Standard designation for a metric single row deep groove ball bearing with a 40mm bore, 90mm OD, and 23mm width.
- Seal Type: Open: No built-in seals or shields, allowing for higher limiting speeds and easy re-lubrication if required.
- Cage: Nylon: Features a lightweight and quiet-running nylon cage, which reduces friction and is suitable for high-speed applications.
- Tolerance Class: P0 (Normal): Standard dimensional and geometrical tolerance for general applications.
- Radial Internal Clearance: CN (Normal): Standard internal clearance group.
308 Bearing Structural Features & Performance Benefits
The 308 bearing's design delivers distinct performance advantages:
- High Load Capacity: With a dynamic load rating of 10,274 lbf and a static load rating of 8,093 lbf, this bearing is robust enough to handle significant radial forces in demanding environments.
- High-Speed Capability: The combination of an open design and a lightweight nylon cage enables a high limiting speed of 8,500 rpm, making it suitable for applications with rapid rotation.
- Durability and Reliability: Manufactured from chrome steel for both rings and balls, the bearing offers excellent resistance to wear and fatigue, ensuring a long operational lifespan.
- Precision Engineering: Adherence to P0 tolerance class guarantees dimensional accuracy and reliable performance, contributing to the overall precision of the host equipment.
308 Bearing Typical Application Areas
The 308 deep groove ball bearing is a fundamental component found in a vast array of industrial and commercial equipment, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Conveyors
- Agricultural Machinery
- Automotive Components (e.g., alternators, idler pulleys)
