4304 ATN9
Double Row Deep Groove Ball Bearings
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4304 ATN9 Bearing Product Overview & Core Advantages
The 4304 ATN9 is a double row angular contact ball bearing designed for applications requiring robust support for combined loads. Its metric design offers a compact cross-section with a 20mm bore, 52mm outside diameter, and 21mm width. Engineered for high rigidity, this bearing is capable of simultaneously supporting significant radial loads and axial loads in both directions. Manufactured to ABEC-1 precision tolerance class, it is an ideal component for machinery demanding reliable performance and dimensional stability.
4304 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 4304 | Basic bearing series designation, indicating the size and internal geometry. |
| A | Signifies a 30° contact angle, optimized for carrying higher axial loads. |
| TN9 | Denotes the cage type: a glass fiber reinforced polyamide (Nylon) cage. This design is lightweight, promotes smooth operation, and is suitable for high-speed applications. |
4304 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness compared to single row bearings, making it exceptionally capable of handling combined loads and moment loads. With a dynamic load rating of 5265 lbf and a static load rating of 3600 lbf, it offers reliable performance in demanding conditions.
High-Speed Performance: The lightweight and robust TN9 nylon cage reduces centrifugal forces and ensures stable operation, contributing to a high limiting speed of 22,000 rpm. The optimized internal geometry further enhances its high-speed capability.
Precision & Reliability: Manufactured from chrome steel for both rings and balls, and held to ABEC-1 precision tolerances, this bearing ensures consistent performance and long service life. The standard C0 radial internal clearance (0.006mm to 0.020mm) makes it suitable for a wide range of general industrial applications.
4304 ATN9 Bearing Typical Application Areas
The 4304 ATN9 is widely used in various industrial sectors due to its versatility and robust performance. Key application areas include:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
- General machinery requiring precision bearings for combined load support.
