# NTN 7208T2DB/GNP5 Angular Contact Ball Bearing - 40 mm Bore, Open, Polyamide Cage, Back-to-Back Duplex Set - MROSupply.com

***NTN 7208T2DB/GNP5 is a 72 series angular contact ball bearing with a 40 mm straight bore. This duplex set is arranged back-to-back (DB) for increased axial rigidity. Features an open enclosure, polyamide cage, and high carbon chrome steel construction. Suitable for machine tool spindles and precision applications requiring high speed and axial load capacity.***



## Product details:

- Catalog number: 7208T2DB/GNP5
- SKU: 277779
- Price: ***$572.53*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-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: 1.594 lb
- UPC: 4547359441178


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


## Product attributes;

  
- 2B: 1.4173 in
  

  
- B (in): 0.7087
  

  
- Ball Material: Steel
  

  
- Ball material: Steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Nylon
  

  
- Cage material: Nylon
  

  
- Cage Type: Fiber Glass Reinforced
  

  
- Cage type: Fiber glass reinforced
  

  
- Configuration: Two
  

  
- Contact angle: 30 º
  

  
- D (in): 3.1496
  

  
- d (in): 1.5748
  

  
- Da max: 2.8740 in
  

  
- da min: 1.8504 in
  

  
- Db max: 2.9724 in
  

  
- Dynamic Load Rating: 12900 lbf
  

  
- Dynamic load rating: 12900 lbf
  

  
- Enclosure: Open
  

  
- I.D.: 40 mm
  

  
- Limiting Speed - Grease: 7700 RPM
  

  
- Limiting speed - grease: 7700 RPM
  

  
- Limiting Speed - Oil: 10000 RPM
  

  
- Limiting speed - oil: 10000 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 80 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO Class 5
  

  
- Preload: Normal
  

  
- r (in): 0.0433
  

  
- r1: 0.0236 in
  

  
- r1as max: 0.0236 in
  

  
- ras max: 0.0394 in
  

  
- Static Load Rating: 11400 lbf
  

  
- Static load rating: 11400 lbf
  

  
- Type: Angular Contact Ball Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048586/1163_S_AnqHLAk.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/72/7208T2DB/GNP5/bearingfinder_2d_pdf_fixed_7208T2DB2FGNP5_Nrgy1bE.pdf)






## 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.