4209 ATN9
Double Row Deep Groove Ball Bearings
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4209 ATN9 Bearing Product Overview & Core Advantages
The 4209 ATN9 is a double row angular contact ball bearing designed for high-performance applications. This precision bearing excels at simultaneously handling significant combined loads, including radial and bidirectional axial loads. Its compact bearing dimensions (45mm bore, 85mm OD, 23mm width) and robust double-row construction provide exceptional high rigidity, making it ideal for arrangements requiring high accuracy and operational reliability. The open design, combined with a Nylon cage, facilitates high-speed operation.
4209 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 4209 | Standard bore diameter code (45mm) and series designation. |
| A | Signifies a 30° contact angle, optimized for carrying high axial loads. |
| TN9 | Indicates a glass fiber reinforced Nylon cage, which is lightweight and contributes to lower friction, higher limiting speeds, and quieter operation. |
4209 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides a significantly stiffer support structure compared to single row bearings, enabling superior performance under combined loads and moment loads. This results in minimal deflection and enhanced positional accuracy.
High-Speed Performance: The lightweight TN9 Nylon cage reduces centrifugal forces and allows for smoother operation at the high limiting speed of 12,000 rpm. The open seal type minimizes friction and heat generation.
Precision & Reliability: Manufactured to ABEC-1 tolerance class with a C0 radial internal clearance (0.006mm to 0.023mm), this bearing ensures consistent and reliable performance. The use of high-grade Chrome Steel for rings and balls guarantees durability and a long service life.
4209 ATN9 Bearing Typical Application Areas
This double row angular contact ball bearing is engineered for demanding applications across various industries, including:
- Machine Tool Spindles
- Gearboxes and Transmissions
- Industrial Pumps and Compressors
- Precision Agricultural Machinery
- Material Handling Equipment
