Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-500480
3309-ATN9 SKF Double Row Angular Contact Ball Bearing
3309-ATN9 SKF Double Row Angular Contact Ball Bearing
The 3309-ATN9 is a premium double row angular contact ball bearing from SKF, a global leader in bearing manufacturing and industrial solutions. This precision bearing is engineered to handle significant combined radial and axial loads simultaneously, making it an excellent choice for demanding industrial applications requiring high load capacity, rotational precision, and reliable performance under challenging operating conditions.
Design & Functionality
Double row angular contact ball bearings are specifically designed to accommodate substantial combined loads—both radial and axial forces acting at the same time. The 3309-ATN9 features a 30° contact angle that provides optimal load distribution and superior axial load capacity in both directions, making it capable of handling bidirectional axial loads without requiring paired arrangements. The open design with no seals allows for straightforward maintenance and accessibility in applications where bearing servicing is important.
The standard arrangement configuration offers proven versatility and reliability, suitable for a wide range of industrial mounting requirements and operational scenarios.
Key Features
- Double row configuration for exceptional load capacity and bidirectional axial load handling
- 30° contact angle for superior load distribution and enhanced durability
- Polyamide cage construction for reliable ball guidance and optimized performance
- Standard bearing steel construction with normal radial clearance
- Open bearing design (no seals) for easy maintenance and cleaning
- Tolerance class P6/ABEC 3 for reliable precision performance
- Temperature range: -20°C to +120°C for versatile operating conditions
- Standard arrangement version for proven industrial compatibility
Specifications
- Manufacturer: SKF
- Reference Number: 3309-ATN9
- Bore Diameter: 45mm
- Outer Diameter: 100mm
- Width: 39.7mm
- Type: Double Row Angular Contact
- Row Type: Double
- Contact Angle: 30°
- Cage Material: Polyamide
- Outer Ring: Without flange/groove
- Seal Type: None (Open bearing)
- Tolerance Class: P6/ABEC 3
- Radial Clearance: Normal
- Material: Standard bearing steel
- Arrangement: Standard version
Applications
The 3309-ATN9 is ideal for high-speed, precision applications including heavy-duty gearboxes, electric motors, spindle systems, industrial machine tools, compressors, pumps, and other demanding machinery where significant combined radial and axial load capacity is essential. The double row design eliminates the need for bearing pairs in many applications, simplifying installation and reducing overall system complexity. Its polyamide cage construction and open design make it well-suited for environments where lubrication accessibility and maintenance efficiency are critical considerations. This bearing is particularly valuable in applications requiring bidirectional load support without the expense and complexity of paired bearing arrangements.
