3305 A-2RS1TN9/MT33
Double Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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3305 A-2RS1TN9/MT33 Bearing Product Overview & Core Advantages
The 3305 A-2RS1TN9/MT33 is a double row angular contact ball bearing engineered for applications demanding high precision and reliability. This sealed bearing is designed to accommodate combined loads—simultaneously handling significant radial loads and bidirectional axial loads. Its compact design, featuring a 25 mm bore and 62 mm outside diameter, offers a space-saving solution without compromising performance. Manufactured to P6 (ABEC-3) tolerance and pre-lubricated with high-performance grease, it delivers exceptional operational accuracy and long-term, maintenance-free service in demanding environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 3305 | Basic bearing designation, defining the standard dimensions (25mm bore, 62mm OD, 25.4mm width). |
| A | Contact angle of 30°, optimized for carrying high axial loads. |
| 2RS1 | Features two integral rubber seals (one on each side) providing superior protection against contaminants and retaining lubricant. |
| TN9 | Polyamide (nylon) cage, glass fiber reinforced. This lightweight cage contributes to lower friction, reduced heat generation, and higher limiting speeds. |
| MT33 | Indicates the bearing is pre-lubricated with a high-quality lithium soap complex grease. This grease offers excellent stability and long life within the specified temperature range. |
3305 A-2RS1TN9/MT33 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior rigidity and stability compared to single row bearings, making it ideal for applications with moment loads or shaft misalignment. It is rated for a dynamic load of 7312 lbf and a static load of 4950 lbf.
- Optimized for Combined Loads: The 30° contact angle is specifically engineered to efficiently support combined radial and axial loads from both directions simultaneously.
- Enhanced Speed Performance: The combination of the TN9 polymer cage and optimized MT33 lubrication enables a high limiting speed of 7,500 rpm, suitable for high-speed applications.
- Maintenance-Free & Long Service Life: The integral 2RS1 rubber seals effectively shield the bearing from dust and moisture while retaining the premium grease, creating a sealed-for-life system that requires no relubrication.
3305 A-2RS1TN9/MT33 Bearing Typical Application Areas
The 3305 A-2RS1TN9/MT33 is ideally suited for a wide range of precision machinery and industrial equipment, including:
- Machine Tool Spindles
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Electric Motors
- Precision Agricultural Machinery
- Material Handling Equipment
