308NR
300 Series Snap Ring Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
308NR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.64 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.015mm to 0
Width
23 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
10274 lbf
Radial static load rating
8093 lbf
Limiting speed
8.5 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 11.47
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
308NR Bearing Product Overview & Core Advantages
The 308NR single row deep groove ball bearing is a precision radial bearing designed for robust performance in general industrial applications. Its key advantage lies in its snap ring fitted outer ring, which provides secure axial location within a housing, simplifying assembly and reducing overall design space. Manufactured to ABEC 1 | ISO P0 tolerance standards, it offers reliable operation and is capable of handling significant radial dynamic loads up to 10,274 lbf. The open design allows for versatile lubrication options to suit specific operational needs.
308NR Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Advantage |
|---|---|---|
| NR | Snap Ring Groove and Snap Ring (fitted) | Enables secure axial location of the outer ring, simplifying housing design and reducing the need for complex end covers or shoulders. |
308NR Bearing Structural Features & Performance Benefits
- High Load Capacity: The single row deep groove construction and chrome steel components enable high radial dynamic and static load ratings, ensuring durability under demanding conditions.
- Simplified Assembly & Space Saving: The integrated snap ring eliminates the need for separate locating components, streamlining the assembly process and creating a more compact housing design.
- Precision Performance: Manufactured to ABEC 1 | ISO P0 tolerance class with standard CN radial internal clearance, this bearing provides consistent, reliable, and smooth running operation.
- Versatile Lubrication: The open seal type allows for the application of a wide range of greases or oils, making it adaptable to various speed and temperature requirements (operating range: -30°C to 120°C).
308NR Bearing Typical Application Areas
This bearing is ideally suited for applications requiring secure axial location and reliable radial load support, including:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Agricultural Machinery
- Material Handling Equipment
- General Machinery where a snap ring groove is specified in the housing
