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SKF Double Row Angular Contact Ball Bearing 55 mm ID, 120 mm OD, 49.2 mm Race Width 3311 A-2Z/C3MT33
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | SKF |
| Model | 3311 A-2Z/C3MT33 |
| Series | 3 Medium |
| Outside diameter | 120mm |
| Inside Diameter | 55mm |
| Number of Rows | 2 |
| Ball Material | Steel |
| Limiting Speed | 3800rpm |
| Internal Clearance | C3 |
| End Type | Shielded |
| Bore Type | Parallel |
| Bearing Type | Double Row Angular Contact Ball |
| Cage Material | Sheet Metal |
| Race Width | 49.2mm |
| Static Load Rating | 81.5kN |
| Dynamic Load Rating | 112kN |
| Contact Angle | 30° |
Key Features
- The bearing features a sheet metal cage for durability and precise ball retention.
- It is shielded to protect internal components against contaminants.
- Designed with two rows and a 30° contact angle to handle combined radial and axial loads simultaneously.
- Offers a static load rating of 81.5 kN and dynamic load rating of 112 kN to support heavy-duty operations.
- Internal clearance is rated C3, allowing for thermal expansion and high-speed operation.
- Bore type is parallel, suitable for standard shaft designs.
- Limiting speed of 3800 rpm enables high-speed applications.
- Manufactured to 3 Medium series standards for medium duty industrial machines.
Product Description
SKF 3311 A-2Z/C3MT33 is a double row angular contact ball bearing engineered for industrial applications requiring accommodation of combined radial and axial loads. Featuring a 55 mm bore and 120 mm outer diameter, it has a 49.2 mm race width that provides robust structural support. Its inner and outer ring raceways are axially displaced to increase axial load capacity, with a 30° contact angle optimizing load transmission and bearing life.
The bearing construction includes a sheet metal cage and steel balls to ensure durability and adequate retention. The shielded end type helps prevent ingress of dust and contaminants, enhancing reliability in demanding environments.
This model conforms to medium duty series 3 specifications, capable of operating at speeds up to 3800 rpm with a C3 internal clearance to accommodate thermal expansion and high-speed stability. It exhibits a static load rating of 81.5 kN and a dynamic load rating of 112 kN, making it suitable for mechanical power transmission, rotary shafts, and heavy machinery applications.
Designed for parallel bore shafts, the 3311 A-2Z/C3MT33 bearing supports various industrial uses including manufacturing, HVAC systems, agricultural machinery, and fluid power equipment. Its precise engineering and German origin guarantee quality and reliability.
The bearing’s double row and angular contact design enable effective handling of combined loads. Sheet metal cage provides strength and reduces wear under operational stresses. Shielded construction maintains bearing cleanliness and extends service intervals.
C3 clearance ensures performance stability at elevated speeds and temperatures. Robust steel balls deliver high fatigue life and load capacity. Suitable for a wide range of industrial machines and instruments. German manufacturing origin assures stringent quality standards.
Explore more precision ball bearings within the SKF catalog on EnvMart to find ideal solutions for your rotary bearing requirements.
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Frequently Asked Questions
This model has an inside diameter of 55 mm, an outside diameter of 120 mm, and a race width of 49.2 mm.
The static load rating is 81.5 kN, while the dynamic load rating is 112 kN, making it suitable for heavy-duty applications.
The limiting speed for this bearing is 3800 rpm, allowing for high-speed applications.
It features a sheet metal cage designed for durability and precise ball retention.
The contact angle is 30°, which helps optimize load transmission and bearing life.
The internal clearance is rated C3, allowing for thermal expansion and high-speed operation.
It has a parallel bore type, making it suitable for standard shaft designs.
This bearing is manufactured in Germany, ensuring adherence to stringent quality standards.
The bearing is constructed with steel balls and a sheet metal cage, providing strength and reducing wear.
It is suitable for mechanical power transmission, rotary shafts, HVAC systems, agricultural machinery, and fluid power equipment.
The double row design allows it to effectively handle combined radial and axial loads simultaneously, enhancing its load capacity.
This bearing belongs to the 3 Medium series, which is designed for medium duty industrial machines.
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