309
With Filling Slots Deep Groove Bearings
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Part No.
Part No.
309
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.88 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.015mm to 0
Width
25 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
12364 lbf
Radial static load rating
9892 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Nylon
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 18.1
/ each
In Stock
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309 Bearing Product Overview & Core Advantages
The 309 metric ball bearing is a high-performance single row deep groove ball bearing engineered for demanding applications. Designed primarily for radial load handling, it features an open construction that facilitates high-speed operation. Manufactured with precision chrome steel rings and balls, this bearing delivers reliable performance and long service life. Its P0 tolerance class ensures consistent quality, making it a robust and cost-effective solution for a wide range of industrial machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 309 | Standard bearing series designation, indicating the bearing dimensions (45mm bore, 100mm OD, 25mm width). |
| (No Suffix) | Indicates an open (unsealed) bearing, allowing for high-speed capability and custom lubrication options. |
| Implied P0 | Standard tolerance class (Normal), providing reliable performance for general applications. |
| Implied CN | Standard radial internal clearance (Normal Group), suitable for most operating conditions. |
309 Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & High Load Capacity: The optimized raceway geometry enables the bearing to handle significant radial dynamic load ratings of 12,364 lbf and radial static load ratings of 9,892 lbf, ensuring durability under demanding conditions.
- High-Speed Performance: The open seal type design minimizes friction and heat generation, supporting a limiting speed of 7,500 rpm. The lightweight nylon cage ensures smooth operation and stability at high rotational speeds.
- Precision Engineering: Manufactured to P0 tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, guaranteeing consistent performance and easy installation.
- Material Integrity: Constructed from high-grade chrome steel for both rings and balls, providing excellent hardness, wear resistance, and a broad temperature range from -30°C to 120°C.
- Flexible Lubrication: Supplied without grease (lubrication: none), allowing for application-specific lubrication to optimize performance for speed, temperature, or environmental conditions.
309 Bearing Typical Application Areas
- Electric Motors & Generators
- Industrial Gearboxes
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Fans
- General Industrial Machinery
