# SKF 3308 ATN9/C3 Double-Row Angular Contact Ball Bearing 40mm Bore 30° Contact Angle C3 Clearance Polyamide Cage - MROSupply.com

***SKF 3308 ATN9/C3 40mm bore double-row angular contact ball bearing with a 30° contact angle, C3 clearance, and a glass-fiber-reinforced polyamide cage. Designed to carry combined radial and axial loads in both directions, it is suitable for pumps, gearboxes, and general industrial machinery.***



## Product details:

- Catalog number: 3308 ATN9/C3
- SKU: 316247
- Price: ***$194.84*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [SKF Bearing](https://www.mrosupply.com/brands/skf-bearing/)
- Category: 
    - [Double Row Angular Contact Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/double-row-angular-contact-bearings/)
    - [Angular Contact Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 2.183 lb


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Arrangement of Contact Angle (double-row Bearing): Back-to-back (O)
  

  
- Axial Internal Clearance: C3
  

  
- Basic Dynamic Load Rating: 65.5 kN
  

  
- Basic Static Load Rating: 48 kN
  

  
- Bearing Material: Bearing steel
  

  
- Bearing Outer Ring Locating Feature: None
  

  
- Bore Diameter: 40 mm
  

  
- Cage: Non-metallic
  

  
- Coating: Without
  

  
- Contact Angle: 30 °
  

  
- Contact Type: Normal contact (two-point contact)
  

  
- Dimension Type: Metric
  

  
- Inner Diameter (mm): 40.000
  

  
- Limiting Speed: 7500 r/min
  

  
- Lubricant: None
  

  
- Lubricant (in Bearing): None
  

  
- Matched Arrangement: No
  

  
- Material/Treatment: Bearing steel
  

  
- Number of Rows: 2
  

  
- O.D. (in): 3 5/9
  

  
- Outer Diameter (mm): 90.000
  

  
- Pack Height: 96 mm
  

  
- Pack Length: 94 mm
  

  
- Pack Width: 42 mm
  

  
- Reference Speed: 7500 r/min
  

  
- Relubrication Feature: Without
  

  
- Ring Type: One-piece
  

  
- Sealing: None
  

  
- SKF Performance Class: SKF Explorer
  

  
- Type: Normal contact (two-point contact)
  

  
- Universal Matching Bearing: No
  

  
- Width: 36.5 mm
  

  
- Width (mm): 36.500
  

## Alternate products to `SKF 3308 ATN9/C3 Double-Row Angular Contact Ball Bearing 40mm Bore 30° Contact Angle C3 Clearance Polyamide Cage - MROSupply.com`:
- [NSK 5308TNC3 Double-row angular contact ball bearing with 40 mm bore. It features a polyamide cage and C3 clearance. This bearing carries combined radial and axial loads in both directions; common in pumps and machine tools.](https://www.mrosupply.com/products/5033057/as-markdown/)
- [FAG 3308BD.TVH.C3 double row angular contact ball bearing with 40mm bore. Features a polyamide cage and C3 internal clearance. Designed for high radial and axial load capacity in compact applications. Suitable for pumps, compressors, and gearboxes.](https://www.mrosupply.com/products/2174599/as-markdown/)

## Product's reviews:
- Excellent! - The perfect part… and FAST shipping! Thank you!!
- Agradecimiento. - Excelente servicio, confiable, rápido y efectivo.
Los seguiré llamando para mis necesidades.
- Skf bearing f4b 108-rm purchase - Great price and quick shipping for a high quality SKF bearing. Exactly what we needed.
- Sales - GREAT PRODUCT CUSTOMER WILL PURCHASE AGAIN.




## FAQ:

- How do I choose the right type of bearing for my application?: Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints.
For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials.
In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.


- What is the difference between deep groove and angular contact ball bearings?: Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors.
Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes.
If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.