3205 A-2ZTN9/MT33
Double Row Angular Contact Ball Bearings
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3205 A-2ZTN9/MT33 Bearing Product Overview & Core Advantages
The 3205 A-2ZTN9/MT33 is a double row angular contact ball bearing designed for applications requiring high precision and reliability. This precision bearing excels at simultaneously handling combined loads—significant radial loads and bidirectional axial loads—thanks to its optimized contact angle and double row design. Its compact bearing dimensions (25mm bore, 52mm OD, 20.6mm width) make it ideal for space-constrained, high-rigidity applications demanding exceptional running accuracy.
3205 A-2ZTN9/MT33 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Performance Benefit |
|---|---|---|
| A | Optimized contact angle (30°) | Enhanced axial load capacity and rigidity |
| 2Z | Double-sided steel shields | Effective contamination protection, maintenance-free operation |
| TN9 | Polyamide (nylon) cage, glass fiber reinforced | Reduced friction, excellent high-speed performance |
| MT33 | High-performance lithium soap complex grease | Extended lubrication life, stable operation across -30°C to 110°C |
3205 A-2ZTN9/MT33 Bearing Structural Features & Performance Benefits
High Rigidity: The double row design provides superior radial and axial stiffness, ensuring minimal deflection under combined loads and maintaining precise shaft positioning.
Load Capacity: Engineered with a 30° contact angle, this bearing efficiently supports both radial loads (4950 lbf dynamic rating) and substantial bidirectional axial loads simultaneously.
High-Speed Performance: The lightweight TN9 polymer cage minimizes centrifugal forces and friction, enabling a limiting speed of 12,000 rpm. Combined with MT33 grease, it ensures stable, cool operation at high rotational speeds.
Maintenance-Free Operation: The integral 2Z shields retain the factory-applied MT33 lubricant and effectively exclude contaminants, providing long-term, reliable performance without requiring re-lubrication.
3205 A-2ZTN9/MT33 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers requiring rigidity and accuracy
- Industrial Pumps & Compressors: Handling combined radial and axial loads in fluid systems
- Precision Instruments: Applications demanding smooth, low-vibration operation
- Electric Motors: High-speed motor applications where reliability and low maintenance are critical
- Material Handling Equipment: Conveyor systems and automation machinery requiring robust bearing performance
