4203 ATN9
Double Row Deep Groove Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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4203 ATN9 Bearing Product Overview & Core Advantages
The 4203 ATN9 is a metric double row angular contact ball bearing engineered for applications demanding high precision and reliability. Its double row design provides superior rigidity and the capacity to support substantial combined loads (radial and axial loads simultaneously). Featuring an open construction and a Nylon cage (TN9), this bearing is optimized for high-speed operation, making it an ideal component for compact, high-performance assemblies where space is at a premium.
4203 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 4203 | Standard bearing series designation, indicating the bearing dimensions (17mm bore, 40mm OD, 16mm width). |
| A | Signifies a 30° contact angle, which provides a high capacity for axial loads. |
| TN9 | Indicates the cage is made of Nylon (Polyamide 66), contributing to lower friction, quieter operation, and suitability for high speeds. |
4203 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row ball bearing construction significantly increases radial and axial stiffness compared to single row designs, enabling stable performance under combined loads.
Optimized High-Speed Performance: The lightweight Nylon TN9 cage reduces centrifugal forces and ensures smooth operation at the high limiting speed of 28,000 rpm.
Precision & Quality: Manufactured to ABEC-1 tolerance class with a standard C0 radial internal clearance, this bearing ensures consistent and reliable performance in a wide range of applications.
Material Integrity: Constructed from Chrome Steel for both rings and balls, offering excellent durability and wear resistance.
4203 ATN9 Bearing Typical Application Areas
The 4203 ATN9 is widely used in various precision machinery and high-speed equipment, including:
- Electric Motors and Spindles
- Precision Gearboxes
- Pumps and Compressors
- Material Handling Equipment
- Industrial Fans and Blowers
