3303 A-2RS1TN9/MT33
Double Row Angular Contact Ball Bearings
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3303 A-2RS1TN9/MT33 Bearing Product Overview & Core Advantages
The 3303 A-2RS1TN9/MT33 is a double row angular contact ball bearing designed for exceptional performance in demanding applications. This precision bearing is engineered to accommodate combined loads—simultaneously handling significant radial loads and bidirectional axial loads—thanks to its optimized contact angle. Its compact design, featuring a 17 mm bore and 47 mm outside diameter, provides a high rigidity solution in a limited space. Pre-lubricated and sealed for life, it ensures high reliability and is ideal for high-precision machinery requiring minimal maintenance and long service intervals.
3303 A-2RS1TN9/MT33 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 3303 | Basic Bearing Series & Size | Denotes the standard metric series with a 17mm bore and 47mm OD. |
| A- | Contact Angle | Indicates a specific, optimized contact angle for enhanced axial load capacity. |
| 2RS1 | Sealing | Features two integral rubber contact seals (one on each side) for superior protection against contaminants and retention of lubricant. |
| TN9 | Cage Type | A glass fiber reinforced polyamide (nylon) cage, offering low weight, quiet operation, and excellent performance at high speeds. |
| MT33 | Lubrication | Pre-greased with a high-quality, lithium soap-based lubricant. Offers stable performance across a wide temperature range (-30°C to +110°C). |
3303 A-2RS1TN9/MT33 Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design effectively doubles the number of load-carrying balls, resulting in significantly higher rigidity and the ability to handle substantial combined loads (radial and bidirectional axial loads) simultaneously. This makes it exceptionally stable under complex loading conditions.
Optimized High-Speed Performance: The lightweight TN9 polymer cage reduces centrifugal forces and inertial effects, which is critical for achieving the high limiting speed of 11,000 rpm. This, combined with the optimized internal geometry, ensures smooth operation and reduced heat generation at high velocities.
Maintenance-Free & Long Service Life: The integral 2RS1 rubber seals provide an effective barrier against moisture, dust, and other contaminants, while securely retaining the MT33 lubricant. This "sealed-for-life" construction eliminates the need for re-lubrication, reduces maintenance costs, and ensures consistent performance over a long operational lifespan.
Precision Engineering: Manufactured to P6 (ABEC-3) tolerance class, this bearing guarantees precise running accuracy and low vibration levels, which is essential for applications demanding high rotational precision.
3303 A-2RS1TN9/MT33 Bearing Typical Application Areas
The 3303 A-2RS1TN9/MT33 is ideally suited for a wide range of industrial applications where reliability, precision, and the ability to handle complex loads are paramount. Key sectors and machinery include:
- Electric Motors & Generators: Particularly in mid-to-high-speed variants requiring robust axial and radial support.
- Industrial Gearboxes & Transmissions: For supporting shafts subjected to combined loads.
- Pumps and Compressors: Where sealed and pre-lubricated bearings are essential to prevent fluid ingress and ensure continuous operation.
- Material Handling Equipment: Including conveyor systems and pulley assemblies.
- Precision Agricultural Machinery: For components that demand high reliability in challenging environments.
