4309 ATN9
Double Row Deep Groove Ball Bearings
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4309 ATN9 Bearing Product Overview & Core Advantages
The 4309 ATN9 is a metric double row angular contact ball bearing engineered for applications requiring high radial load capacity and robust performance. Featuring an open design with a nylon cage, this bearing delivers exceptional rigidity and stable operation under demanding conditions. Its P0 tolerance class ensures consistent precision, making it suitable for machinery where reliable radial support is critical. The combination of chrome steel construction and optimized internal geometry provides excellent durability and long service life in industrial environments.
4309 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 4309 | Standard bearing series designation with 45mm bore diameter |
| A | Contact angle optimized for radial load capacity |
| TN9 | Nylon cage design enabling high-speed operation and reduced friction |
4309 ATN9 Bearing Structural Features & Performance Benefits
Double Row Design: The two-row ball arrangement provides enhanced radial load capacity and superior rigidity compared to single row bearings, ensuring stable shaft support even under heavy loads.
Nylon Cage (TN9): This polymer cage material offers excellent strength-to-weight ratio, contributing to reduced rotational inertia and enabling higher limiting speeds. The cage design also provides superior guidance for the balls, minimizing friction and heat generation.
Chrome Steel Construction: Both rings and balls are manufactured from high-grade chrome steel, delivering exceptional wear resistance and fatigue strength for extended bearing service life.
Open Seal Configuration: The unsealed design allows for optimal heat dissipation and facilitates custom lubrication solutions tailored to specific application requirements.
4309 ATN9 Bearing Typical Application Areas
- Industrial Gearboxes and power transmission systems
- Material Handling Equipment including conveyor systems
- Agricultural Machinery requiring robust radial support
- Electric Motors and industrial fans
- General Industrial Machinery where high radial load capacity is essential
