3204 ATN9
Double Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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3204 ATN9 Bearing Product Overview & Core Advantages
The 3204 ATN9 is a precision double row angular contact ball bearing designed for applications requiring high rigidity and reliable performance under combined loading conditions. Engineered to simultaneously handle significant radial loads and bidirectional axial loads, this bearing features a compact design that saves space in demanding assemblies. Its P6 (ABEC-3) tolerance class ensures high running accuracy, making it an ideal choice for high-speed, high-precision machinery where operational reliability is critical.
Model Code Breakdown
| Suffix | Technical Meaning | Significance |
|---|---|---|
| A | 30° Contact Angle | Optimized for handling substantial axial loads in both directions |
| TN9 | Nylon Cage, Glass Fiber Reinforced | Enables higher limiting speeds, reduces friction and weight |
3204 ATN9 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior stiffness compared to single row bearings, offering stable support against moment loads and combined loads. With a dynamic load rating of 4590 lbf and static load rating of 2902 lbf, it delivers robust performance in demanding conditions.
Optimized High-Speed Performance: The TN9 nylon cage contributes to excellent high-speed capability with a limiting speed of 14,000 rpm. The lightweight cage minimizes centrifugal forces while the pre-lubrication ensures smooth operation at elevated speeds.
Precision Engineering: Manufactured to P6 tolerance class with precisely controlled bearing dimensions (20mm bore × 47mm OD × 20.6mm width), this bearing ensures accurate positioning and minimal runout in precision applications.
Material Excellence: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and durability. The bearing operates effectively within a temperature range of -30°C to 110°C.
3204 ATN9 Bearing Typical Application Areas
The 3204 ATN9 is particularly suited for applications requiring high precision and reliability, including:
- Machine Tool Spindles - Providing high rigidity and accuracy for machining operations
- Precision Gearboxes - Handling combined radial and axial loads in transmission systems
- Industrial Pumps & Compressors - Supporting shafts under dynamic loading conditions
- Medical Equipment - Ensuring smooth, precise operation in diagnostic and surgical devices
- Robotics & Automation - Delivering reliable performance in articulated joints and positioning systems
