313 NR
300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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313 NR Bearing Product Overview & Core Advantages
The 313 NR is a single row deep groove ball bearing designed for exceptional radial load capacity and reliable performance in demanding industrial applications. Its key distinguishing feature is the snap ring (fitted) on the outer ring, which provides secure axial location within a housing, simplifying assembly and reducing the need for complex housing designs. Manufactured with Chrome Steel rings and balls, and a Stainless Steel cage, this bearing offers high durability and consistent operation. It is an open type bearing, making it suitable for systems where external lubrication is provided, and it adheres to the P0 (Normal) tolerance class and CN (Normal) radial internal clearance, ensuring dependable performance for a wide range of general engineering uses.
Model Code Breakdown
- 313: Standard designation for a medium series, single row deep groove ball bearing with a 65mm bore.
- NR: Indicates the bearing is supplied with a Snap Ring (fitted) on its outer diameter. This groove and ring assembly facilitates secure mounting.
Note: The absence of other suffixes (e.g., for seals or special lubricants) confirms this is an open bearing.
313 NR Bearing Structural Features & Performance Benefits
Snap Ring for Simplified Assembly: The integrated snap ring acts as a positive axial locating feature, preventing creeping and simplifying housing design by eliminating the need for complex shoulders or end caps.
High Radial Load Capacity: The deep groove raceway and robust construction enable it to handle significant radial dynamic loads (22,931 lbf) and radial static loads (20,233 lbf).
Optimized for Speed and Durability: The stainless steel cage ensures stability and low wear at the limiting speed of 5,300 rpm. The use of high-grade chrome steel provides excellent resistance to wear and fatigue.
Standardized Performance: Conformance to P0 tolerance and CN radial clearance guarantees predictable and interchangeable performance, which is critical for maintenance and replacement.
313 NR Bearing Typical Application Areas
The 313 NR is ideally suited for applications requiring secure location and high radial load support. Common uses include:
- Electric Motors and Generators
- Industrial Gearboxes
- Agricultural Machinery
- Material Handling Equipment (e.g., conveyor pulleys)
- Pumps and Compressors
