3205 ATN9
Double Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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3205 ATN9 Bearing Product Overview & Core Advantages
The 3205 ATN9 is a double row angular contact ball bearing designed for applications requiring high precision and reliability. This metric bearing excels at simultaneously handling combined radial and axial loads from both directions. Its compact design, featuring a 25 mm bore and 52 mm outside diameter, provides a space-saving solution without compromising performance. Manufactured to P6 (ABEC-3) tolerance class, it ensures precise running accuracy, making it ideal for demanding applications where high rigidity and consistent performance are critical.
3205 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 3205 | Basic bearing designation indicating a double row angular contact ball bearing with a 25 mm bore diameter and 52 mm outside diameter. |
| A | Contact angle of 30°, optimized for carrying significant axial loads. |
| TN9 | Nylon (polyamide) cage, injection molded. This cage material contributes to high-speed performance, reduced friction, and quieter operation. |
3205 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior rigidity and enables the bearing to handle substantial combined loads (both radial and bidirectional axial loads) effectively. The optimized internal geometry, including a 30° contact angle, ensures stable operation under complex loading conditions.
High-Speed Performance: The lightweight TN9 nylon cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 12,000 rpm. The open design facilitates efficient lubrication management for sustained high-speed operation.
Precision & Reliability: Manufactured from chrome steel for both rings and balls, and built to P6 tolerance, this bearing guarantees high running accuracy and long-term dimensional stability. The standard lubrication ensures immediate readiness for operation across a wide temperature range of -30°C to 110°C.
3205 ATN9 Bearing Typical Application Areas
The 3205 ATN9 is engineered for high-performance applications across various industries, including:
- Machine Tool Spindles: Where high precision, rigidity, and speed are paramount.
- Industrial Pumps and Compressors: For handling combined loads in demanding fluid handling systems.
- Precision Gearboxes and Transmissions: Providing reliable support in power transmission units.
- Electric Motors: Especially in mid-to-high-speed motor designs requiring robust axial load capacity.
