3305 A-2ZTN9/MT33
Double Row Angular Contact Ball Bearings
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3305 A-2ZTN9/MT33 Bearing Product Overview & Core Advantages
The 3305 A-2ZTN9/MT33 is a double row angular contact ball bearing engineered for applications demanding high rigidity and precision. This compact bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and bi-directional axial loads. Its construction makes it an ideal choice for high-reliability machinery where space constraints and operational accuracy are critical. The bearing comes pre-lubricated and shielded, offering a robust, maintenance-free solution for demanding industrial environments.
3305 A-2ZTN9/MT33 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Advantage |
|---|---|---|
| A | 30° contact angle design | Optimized for handling axial loads |
| 2Z | Double-sided steel shields | Effective contamination protection, retaining lubrication |
| TN9 | Polyamide (nylon) cage, glass fiber reinforced | Reduced friction, suitable for high-speed operation |
| MT33 | High-performance lithium soap complex grease | Extended service life, stable across wide temperature range |
3305 A-2ZTN9/MT33 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling the bearing to withstand heavy combined loads without significant deformation. With a radial dynamic load rating of 7312 lbf and static load rating of 4950 lbf, it delivers reliable performance under demanding conditions.
High-Speed Performance: The TN9 polyamide cage minimizes centrifugal forces and friction, contributing to the bearing's impressive limiting speed of 11,000 rpm. Combined with optimized internal geometry, this makes it an excellent choice for high-speed applications.
Maintenance-Free Operation: The 2Z steel shields effectively retain the MT33 premium grease while excluding contaminants. This sealed-for-life construction eliminates the need for relubrication, reducing maintenance requirements and ensuring consistent performance throughout the bearing's service life.
Precision Engineering: Manufactured to P6 (ABEC-3) tolerance class with precise dimensional control, this bearing ensures smooth operation and accurate positioning in precision machinery applications.
3305 A-2ZTN9/MT33 Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers requiring rigid support and high rotational accuracy
- Industrial Pumps & Compressors - Handling combined radial and axial loads in fluid handling equipment
- Precision Gearboxes - Providing stable support in transmission systems with space constraints
- Electric Motors - High-speed motor applications demanding reliable bearing performance
- Material Handling Equipment - Conveyor systems and automated machinery requiring durable bearing solutions
- Medical Equipment - Precision instruments where reliability and smooth operation are critical
