3207 ATN9
Double Row Angular Contact Ball Bearings
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3207 ATN9 Bearing Product Overview & Core Advantages
The 3207 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, thanks to its optimized contact angle. Featuring an open design with a nylon cage (TN9) and pre-lubrication, it delivers exceptional high-speed performance and smooth operation. Its compact bearing dimensions (35mm bore, 72mm OD, 27mm width) and P6 (ABEC-3) tolerance class make it ideal for precision arrangements demanding high rigidity and dimensional stability.
3207 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Impact |
|---|---|---|
| 3207 | Basic designation: Double row angular contact ball bearing with 35mm bore, 72mm OD | Defines core bearing dimensions and type |
| A | Contact angle of 30° | Optimized for axial load capacity in both directions |
| TN9 | Nylon cage, glass fiber reinforced | Enables high-speed operation (9,000 rpm) with reduced friction |
3207 ATN9 Bearing Structural Features & Performance Benefits
Double Row Design: The two rows of balls arranged at a 30° contact angle provide high rigidity and stability, making this bearing exceptionally resistant to moment loads and deflection in precision applications.
Superior Load Capacity: Engineered to handle combined radial and axial loads simultaneously from both directions, with a dynamic load rating of 9,112 lbf and static load rating of 6,750 lbf.
High-Speed Performance: The TN9 nylon cage ensures excellent guidance of rolling elements at high speeds, contributing to the limiting speed of 9,000 rpm while maintaining low vibration and noise levels.
Precision Engineering: Manufactured to P6 (ABEC-3) tolerance class with tight dimensional control (bore tolerance: -0.01mm to 0), ensuring precise fit and reliable performance in demanding applications.
3207 ATN9 Bearing Typical Application Areas
- Machine Tool Spindles: Precision machining centers requiring high rigidity and accuracy
- Industrial Pumps: Centrifugal and process pumps handling axial and radial loads
- Precision Gearboxes: Power transmission systems demanding high-speed capability
- Electric Motors: High-performance motors requiring reliable bearing support
- Material Handling Equipment: Conveyor systems and automated machinery
