Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-495868
3309-DMA SKF Double Row Angular Contact Ball Bearing
3309-DMA SKF Double Row Angular Contact Ball Bearing
The 3309-DMA is a premium double row angular contact ball bearing from SKF, engineered for high-speed, precision applications requiring simultaneous radial and axial load capacity. This medium-format bearing combines robust construction with precision engineering, making it ideal for demanding industrial machinery and equipment where reliable performance under combined loading is essential.
Bearing Specifications:
- Reference Number: 3309-DMA
- Brand: SKF
- Bore Diameter (Inside Dia): 45mm
- Outer Diameter (Outside Dia): 100mm
- Width: 39.7mm
- Row Type: Double Row
- Contact Angle: 30-40 degrees (standard)
- Seal Type: Open bearing (unsealed)
- Cage Material: Brass cage
- Material: Standard bearing steel
- Radial Clearance: Normal clearance
- Outer Ring: Without flange/groove
- Tolerance Class: P6 / ABEC 3
- Operating Temperature Range: -20°C to +150°C
- Arrangement: Standard version
Key Features:
- Double row configuration accommodates bidirectional axial loads with superior load distribution
- Brass cage design ensures optimal ball spacing and reduced friction during high-speed operation
- Open bearing design allows for application-specific lubrication strategies
- SKF precision engineering delivers consistent performance and extended service life
- P6 / ABEC 3 tolerance class provides excellent precision and run-out accuracy
- 45mm bore diameter suited for mid-range industrial and commercial applications
- Enhanced rigidity from dual-row design ideal for high radial and axial load handling
Applications:
This bearing is particularly suited for industrial machinery, gearboxes, electric motors, machine tool spindles, compressors, pumps, and precision equipment requiring reliable performance under combined loading conditions. The 45mm bore size makes it ideal for medium to heavy-duty power transmission equipment and industrial applications. The open design is especially beneficial for applications where custom lubrication regimens or sealed housings are preferred.
Note: As an open bearing, proper lubrication and contamination management are essential for optimal performance and bearing longevity.
