3212 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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3212 ATN9 Bearing Product Overview & Core Advantages
The 3212 ATN9 is a double row angular contact ball bearing engineered for applications demanding high precision and reliability. This precision bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and bidirectional axial loads. Its compact design, featuring a 60 mm bore and 110 mm outside diameter, offers a space-saving solution without compromising performance. Manufactured to a P6 (ABEC-3) tolerance class, it ensures exceptional running accuracy, making it ideal for high-rigidity support systems.
3212 ATN9 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| A | Designates a 30° contact angle, optimized for high axial load capacity. |
| TN9 | Indicates a glass fiber reinforced nylon cage (Polyamide 66). This cage design contributes to lower friction, reduced weight, and is suitable for high-speed operation. |
3212 ATN9 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior rigidity and stability compared to single row bearings, enabling it to handle substantial combined loads effectively. The optimized 30° contact angle further enhances its bidirectional axial load capacity.
- High-Speed Performance: The lightweight TN9 nylon cage minimizes centrifugal forces, reduces friction, and allows for a high limiting speed of 5,600 rpm. The bearing comes pre-lubricated for immediate operation.
- Precision Engineering: Manufactured to P6 tolerance with precise bearing dimensions (60mm bore, 110mm OD, 36.5mm width), it ensures smooth, quiet, and accurate rotation essential for precision machinery.
- Material Quality: Constructed from chrome steel for both rings and balls, providing high durability, wear resistance, and a long operational lifespan.
3212 ATN9 Bearing Typical Application Areas
The 3212 ATN9 is ideally suited for a wide range of industrial applications requiring robust performance and precision, including:
- Machine Tool Spindles
- Industrial Pumps and Compressors
- Gearboxes and Transmission Systems
- Precision Medical and Laboratory Equipment
- Material Handling Systems
