308M
200, 300 & 6400 Series Industrial Single Row Deep Groove Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
308M
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
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:
$ 14.48
/ each
In Stock
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308M Bearing Product Overview & Core Advantages
The 308M metric ball bearing is a single row deep groove ball bearing engineered for reliable performance in general industrial applications. Characterized by its open design and high radial load capacity, this bearing is a versatile and cost-effective solution. Its ABEC 1 precision class and standardized CN radial internal clearance ensure consistent operation and easy interchangeability, making it suitable for a wide range of machinery requiring robust radial load support.
308M Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 308 | Standard bearing series number, defining the boundary dimensions (40mm bore, 90mm OD, 23mm width). |
| M | Indicates the bearing is manufactured from Chrome Steel. |
Note: The absence of additional suffixes signifies an open (unsealed) bearing with no pre-applied lubrication.
308M Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and chrome steel construction (rings, balls, and cage) provide high strength and durability, enabling a dynamic load rating of 10,274 lbf and a static load rating of 8,093 lbf.
- High-Speed Capability: The optimized geometry and open design allow for efficient heat dissipation, supporting a limiting speed of 8,500 rpm.
- Precision & Interchangeability: Manufactured to ABEC 1 (ISO P0) tolerance class with standard CN clearance, ensuring reliable performance and easy replacement in standard applications.
- Application Flexibility: The open seal type allows for the use of various lubrication systems, making it adaptable to different operational environments within its temperature range of -30°C to 120°C.
308M Bearing Typical Application Areas
- Electric Motors and Generators
- Industrial Gearboxes and Transmissions
- Material Handling Conveyors
- Agricultural Machinery
- General Industrial Machinery requiring reliable radial load support
