305M
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.
305M
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.24 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.013mm to 0
Width
17 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
5148 lbf
Radial static load rating
3507 lbf
Limiting speed
13 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:
$ 9.32
/ each
In Stock
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305M Bearing Product Overview & Core Advantages
The 305M is a metric single row deep groove ball bearing engineered for radial load applications requiring reliable performance. Featuring an open design and manufactured to ABEC 1 (ISO P0) precision standards, this bearing offers a robust solution for general industrial use. Its construction from high-grade chrome steel for all critical components ensures consistent durability and a long service life under standard operating conditions.
305M Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 305 | Standard bearing series designation with a 25 mm bore diameter and 62 mm outside diameter. |
| M | Indicates the bearing is manufactured to metric dimensions and specifications. |
| Open (Seal Type) | No integral seals or shields, allowing for higher limiting speeds and custom lubrication options. |
| CN (Clearance) | Specifies standard radial internal clearance for normal operating conditions. |
305M Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The single row deep groove raceway geometry is designed to efficiently support significant radial dynamic loads (5148 lbf) and moderate axial loads in both directions.
- High-Speed Capability: The open design and chrome steel cage contribute to a high limiting speed of 13,000 rpm, minimizing friction and heat generation.
- Precision & Reliability: Manufactured to ABEC 1 precision class with tight dimensional tolerances, ensuring smooth operation, reduced vibration, and consistent performance in a wide temperature range (-30°C to 120°C).
- Robust Construction: All components—rings, balls, and cage—are made from chrome steel, providing high hardness, wear resistance, and overall mechanical strength.
305M Bearing Typical Application Areas
This versatile bearing is commonly specified for:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Pumps and Fans
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- General Machinery requiring a standard ball bearing solution.
