6308 NR
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6308 NR Bearing Product Overview & Core Advantages
The 6308 NR is a single row deep groove ball bearing engineered for exceptional radial load capacity and reliable performance in demanding industrial applications. Its defining feature is the snap ring groove and fitted snap ring on the outer ring, which provides secure axial location and simplifies housing design by eliminating the need for complex end covers or shoulders. Manufactured with chrome steel rings and balls, along with a stainless steel cage, this bearing offers high durability and consistent operation. Its open design allows for versatile lubrication options, making it a robust and cost-effective solution for a wide range of machinery.
6308 NR Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 6308 | Standard designation for a medium-duty, single row deep groove ball bearing with a 40mm bore, 90mm OD, and 23mm width. |
| NR | Indicates the bearing is equipped with a snap ring groove and a fitted snap ring on the outer ring for axial locating. |
6308 NR Bearing Structural Features & Performance Benefits
- Simplified Assembly and Axial Location: The integrated snap ring allows for easy installation and secure axial positioning within the housing, reducing assembly time and complexity.
- High Radial Load Capacity: The deep groove raceway and robust chrome steel construction enable it to handle significant radial dynamic loads (9509 lbf) and static loads (5395 lbf).
- Versatile Lubrication: The open seal type permits the use of various lubricants (oil or grease) tailored to specific application speed and temperature requirements, supporting a limiting speed of 11,000 rpm.
- Durability and Stability: The stainless steel cage ensures high strength and corrosion resistance, contributing to stable operation and a long service life under standard CN clearance and P0 tolerance.
6308 NR Bearing Typical Application Areas
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Conveyors
- Agricultural Machinery
- General Industrial Machinery where a snap ring groove simplifies the housing design.
