3307 A-2ZTN9/MT33
Double Row Angular Contact Ball Bearings
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3307 A-2ZTN9/MT33 Bearing Product Overview & Core Advantages
The 3307 A-2ZTN9/MT33 is a metric double row angular contact ball bearing engineered for high-performance applications requiring exceptional precision and reliability. Its double row design provides superior high rigidity and enables it to simultaneously support significant combined radial and bidirectional axial loads. Featuring shielded seals and factory-applied high-performance grease, this bearing offers a compact, robust, and long-lasting solution for demanding operational environments.
3307 A-2ZTN9/MT33 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Benefit |
|---|---|---|
| 3307 | Basic bearing designation indicating bearing dimensions (35mm bore, 80mm OD, 34.9mm width). | Standardized sizing for easy integration and replacement. |
| A | Contact angle of 30°. | Optimized for handling high axial loads. |
| 2Z | Bearing is equipped with shields on both sides. | Provides effective protection against contamination, enhancing bearing life. |
| TN9 | Polyamide (nylon) cage, snap-type design. | Contributes to lower friction, quieter operation, and suitability for high-speed applications. |
| MT33 | Indicates the bearing is pre-lubricated with a specific high-performance lithium soap complex grease. | Ensures immediate, reliable operation and offers a wide operating temperature range, reducing maintenance needs. |
3307 A-2ZTN9/MT33 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact construction provides a significantly stiffer support structure compared to single row bearings, making it ideal for applications where shaft deflection must be minimized. This design efficiently manages combined loads (radial and axial forces acting simultaneously) from both directions.
Optimized High-Speed Performance: The lightweight TN9 polymer cage reduces centrifugal forces and ensures stable operation at the high limiting speed of 8,500 rpm. Combined with the optimized MT33 lubrication, it minimizes friction and heat generation.
Maintenance-Free & Long Service Life: The integrated 2Z shields effectively retain the grease and exclude contaminants. This, along with the pre-lubrication, creates a sealed-for-life system that requires no relubrication under normal operating conditions, ensuring reliability and reducing total cost of ownership.
3307 A-2ZTN9/MT33 Bearing Typical Application Areas
This precision bearing is ideally suited for a wide range of industrial machinery requiring high accuracy, rigidity, and speed. Common applications include:
- Machine Tool Spindles
- Industrial Pumps and Compressors
- Gearboxes and Transmission Systems
- Precision Medical and Laboratory Equipment
- Material Handling Systems
