6304 Y/C78
6000, 6200 & 6300 Series Metric Standard Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
6304 Y/C78
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
144 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
52 mm
Outside diameter tolerance
-0.013mm to 0
Width
15 mm
Width tolerance
-0.120mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
3574 lbf
Radial static load rating
1765 lbf
Limiting speed
14 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:
$ 37
/ each
In Stock
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6304 Y/C78 Bearing Product Overview & Core Advantages
The 6304 is a single row deep groove ball bearing designed for outstanding performance in a wide range of industrial applications. Engineered to primarily accommodate radial loads, this open-type bearing is characterized by its high running accuracy, versatility, and reliable operation. Manufactured to ABEC 1 | ISO P0 tolerance standards, it ensures consistent performance and is an excellent choice for applications requiring a balance of cost-effectiveness and dependable functionality. Its robust construction from chrome steel provides durability and a long service life.
6304 Y/C78 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 63 | Series designation indicating medium duty and specific dimensional series. |
| 04 | Bore diameter code, corresponding to a 20 mm bore. |
| Open (No suffix) | The bearing is supplied without seals or shields, allowing for higher limiting speeds and easy re-lubrication. |
6304 Y/C78 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The open design and absence of contact seals minimize friction and heat generation, enabling a high limiting speed of 14,000 rpm. The pressed steel cage ensures stable operation at these velocities.
- Radial Load Capacity: The deep groove raceway and single-row design are optimized to efficiently support significant radial loads, with a dynamic load rating of 3574 lbf and a static load rating of 1765 lbf.
- Precision & Rigidity: Manufactured to ABEC 1 (ISO P0) tolerance class with a standard CN radial internal clearance, this bearing provides high running accuracy and consistent performance for general precision applications.
- Material Durability: All critical components—rings, balls, and cage—are constructed from high-grade chrome steel, offering excellent resistance to wear and fatigue, contributing to a long operational lifespan.
- Versatile Lubrication: Supplied without grease (None), it offers maximum flexibility for the user to select the optimal lubricant for the specific application environment and temperature range of -30°C to 120°C.
6304 Y/C78 Bearing Typical Application Areas
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General Industrial Machinery where reliable radial load support is required.
