6304 ETN9
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6304 ETN9 Bearing Product Overview & Core Advantages
The 6304 ETN9 is a single row deep groove ball bearing engineered for high-performance applications requiring exceptional precision and reliability. This metric bearing is characterized by its ability to efficiently handle radial loads while also accommodating moderate axial loads in both directions. Manufactured to a P6 tolerance class, it offers superior dimensional accuracy and running precision, making it an ideal choice for applications demanding high rotational speeds and operational stability. Its open design, combined with a high-performance nylon cage (TN9), contributes to its excellent limiting speed and low friction operation.
6304 ETN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 6304 | Basic bearing designation | Indicates a single row deep groove ball bearing with a 20mm bore, 52mm OD, and 15mm width. |
| E | Optimized internal design | Signifies enhanced internal geometry for increased radial load capacity. |
| TN9 | Nylon cage, glass fiber reinforced | Provides low weight, low friction, and excellent acceleration characteristics, ideal for high-speed applications. |
6304 ETN9 Bearing Structural Features & Performance Benefits
High Precision & Rigidity: The P6 tolerance class ensures tight dimensional control, resulting in minimal runout and vibration for precise shaft positioning. The deep groove raceway and optimized internal design contribute to high rigidity under load.
Superior Load Capacity: The E-type internal design maximizes the number and size of balls, significantly boosting the radial dynamic load rating to 4092 lbf, enabling reliable operation under demanding conditions.
High-Speed Performance: The lightweight TN9 nylon cage reduces centrifugal forces and allows for a high limiting speed of 19,000 rpm. The open design facilitates efficient lubrication management for cooler running.
Material & Compliance: Constructed from high-grade chrome steel for both rings and balls, ensuring durability and long service life. The bearing is compliant with ROHS and REACH environmental standards.
6304 ETN9 Bearing Typical Application Areas
The 6304 ETN9 is ideally suited for a wide range of industrial machinery and precision equipment, including:
- Electric Motors and Spindles
- Gearboxes and Transmission Systems
- Pumps and Compressors
- Material Handling Equipment
- Precision Instruments and Office Automation Equipment
