3302 A-2ZTN9/MT33
Double Row Angular Contact Ball Bearings
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3302 A-2ZTN9/MT33 Bearing Product Overview & Core Advantages
The 3302 A-2ZTN9/MT33 is a metric double row angular contact ball bearing engineered for applications requiring high precision and reliability. Its primary advantage lies in its ability to simultaneously support substantial combined loads—both radial and bidirectional axial loads—within a compact design envelope. Featuring shielded seals and factory-preloaded high-performance grease, this bearing is optimized for high-speed operation and offers long-term, maintenance-free service in demanding environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 3302 | Basic bearing designation, indicating the series and bore size. |
| A | Contact angle of 30°, optimized for carrying significant axial loads. |
| 2Z | Bearing is equipped with shields on both sides, providing effective protection against contamination while allowing for high-speed operation. |
| TN9 | Polyamide (nylon) cage, press-formed. This cage material contributes to lower friction, reduced weight, and superior performance at high rotational speeds. |
| MT33 | Indicates the bearing is pre-lubricated with a specific high-performance grease. This grease is formulated for a wide temperature range and extended service life, enabling a maintenance-free design. |
3302 A-2ZTN9/MT33 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design significantly increases the bearing's load-carrying capacity and rigidity compared to single row designs. This makes it exceptionally suitable for applications subjected to combined radial and axial loads from both directions, providing stable and precise shaft support.
Optimized High-Speed Performance: The combination of the lightweight TN9 polymer cage and the optimized lubrication with MT33 grease allows the bearing to achieve a high limiting speed of 16,000 rpm. This ensures smooth operation and reduced heat generation in high-speed machinery.
Maintenance-Free & Long Service Life: The integral 2Z shields effectively retain the grease and exclude contaminants like dust and moisture. Coupled with the high-quality, pre-applied grease, this design ensures long-term, reliable operation without the need for re-lubrication, reducing total cost of ownership.
Precision Engineering: Manufactured to a P6 (ABEC-3) tolerance class, this bearing guarantees high running accuracy, low vibration, and consistent performance, which is critical for precision applications.
3302 A-2ZTN9/MT33 Bearing Typical Application Areas
The 3302 A-2ZTN9/MT33 is ideally suited for a wide range of industrial machinery requiring high precision, speed, and reliability. Key application areas include:
- Machine Tool Spindles
- Industrial Pumps and Compressors
- Precision Gearboxes
- Electric Motors
- Material Handling Equipment
- Agricultural Machinery
