3308 A-2ZTN9/MT33
Double Row Angular Contact Ball Bearings
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Part No.
Part No.
3308 A-2ZTN9/MT33
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
0.93 kg
Tolerance class
P6 (ABEC-3)
Seal type
Shielded
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.013mm to 0
Width
36.5 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.5 mm
Distance from side face to load point
53 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
14738 lbf
Radial static load rating
10800 lbf
Limiting speed
7.5 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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3308 A-2ZTN9/MT33 Bearing Product Overview & Core Advantages
The 3308 A-2ZTN9/MT33 is a metric double row angular contact ball bearing engineered for high-performance applications requiring exceptional precision and reliability. Its design enables it to simultaneously handle significant combined loads—both radial and bidirectional axial loads—within a compact envelope. Featuring shielded seals and factory-applied high-performance grease, this bearing is optimized for high-speed operation and offers long-term, maintenance-free service in demanding environments.
3308 A-2ZTN9/MT33 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 3308 | Basic bearing series designation, indicating a 40 mm bore, 90 mm OD, and standard internal geometry. |
| A | Signifies a 30° contact angle, optimized for carrying higher axial loads. |
| 2Z | Denotes bearings with shields on both sides. This provides effective protection against contamination while allowing for higher rotational speeds compared to contact seals. |
| TN9 | Indicates a stainless steel, snap-type cage. This polymer cage design is lightweight and robust, contributing to the bearing's high-speed capability, smooth operation, and corrosion resistance. |
| MT33 | Specifies a high-performance polyurea grease fill. This lubricant is designed for a wide temperature range (-30°C to 110°C) and offers extended service life, making the bearing ready for use and maintenance-free. |
3308 A-2ZTN9/MT33 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial rigidity, enabling stable support for shafts under complex combined loads. The 30° contact angle is specifically engineered to handle substantial bidirectional axial forces.
- Optimized High-Speed Performance: The combination of the low-friction TN9 polymer cage and the effective MT33 grease lubrication allows for a high limiting speed of 7,500 rpm, making it a true high-speed bearing.
- Precision & Longevity: Manufactured to a P6 (ABEC-3) tolerance class, this bearing ensures running accuracy and consistent performance. The 2Z shields retain lubricant and exclude contaminants, while the pre-lubrication ensures reliable operation over a long service interval without maintenance.
3308 A-2ZTN9/MT33 Bearing Typical Application Areas
The 3308 A-2ZTN9/MT33 is ideally suited for precision machinery and high-duty equipment, including:
- Machine Tool Spindles
- Industrial Pumps and Compressors
- Precision Gearboxes
- Material Handling Systems
- Electric Motors and Generators
