4302 ATN9
Double Row Deep Groove Ball Bearings
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Performance
Materials
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4302 ATN9 Bearing Product Overview & Core Advantages
The 4302 ATN9 is a double row angular contact ball bearing engineered for exceptional performance in demanding applications. This precision bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and axial loads in both directions. Its compact double-row design provides superior high rigidity and rotational accuracy, making it an ideal choice for high-reliability machinery. Manufactured with a Nylon cage and open design, it is optimized for high-speed operation while maintaining dimensional stability.
4302 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 4302 | Basic bearing designation | Defines the standard bearing dimensions: 15mm bore, 42mm OD, 17mm width |
| A | Contact angle designation | Optimized for superior axial load capacity and high rigidity |
| TN9 | Nylon cage, glass fiber reinforced | Enables high-speed performance, reduced friction, and excellent acceleration characteristics |
4302 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact construction provides exceptional stiffness, enabling the bearing to handle combined loads effectively. With a radial dynamic load rating of 3330 lbf and radial static load rating of 2138 lbf, it delivers reliable performance under demanding conditions.
High-Speed Performance: The TN9 nylon cage contributes significantly to the bearing's limiting speed of 28,000 rpm. This lightweight cage material reduces centrifugal forces and ensures smooth operation at high rotational speeds.
Precision Engineering: Manufactured to ABEC-1 tolerance class with a C0 radial internal clearance (0.003mm to 0.018mm), this bearing guarantees consistent performance and precise rotational characteristics. The open design allows for customized lubrication strategies based on specific application requirements.
Material Quality: Constructed from chrome steel for both rings and balls, the bearing offers excellent durability and wear resistance, operating effectively within a temperature range of -30° to 110°C.
4302 ATN9 Bearing Typical Application Areas
The 4302 ATN9 double row angular contact ball bearing is ideally suited for applications requiring high rigidity and precision performance:
- Machine tool spindles and precision machining equipment
- High-speed motors and industrial pump systems
- Precision gearboxes and transmission systems
- Industrial automation equipment and robotics
- Medical equipment and precision instruments
