# NTN 7020DB/GNP5 Angular Contact Ball Bearing - 100 mm Bore, Back-to-Back Duplex, Brass Cage, Open, P5 Precision - MROSupply.com

***NTN 7020DB/GNP5 duplex angular contact ball bearing with 100 mm straight bore, back-to-back (DB) arrangement for high rigidity and moment load capacity. Brass cage, open enclosure, P5 precision class. High carbon chrome steel construction for machine tool spindles and high-speed applications requiring combined axial and radial load support.***



## Product details:

- Catalog number: 7020DB/GNP5
- SKU: 277897
- Price: ***$1,894.28*** 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: 6.482 lb
- UPC: 4547359434736


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


## Product attributes;

  
- 2B: 1.8898 in
  

  
- B (in): 0.9449
  

  
- Ball Material: Steel
  

  
- Ball material: Steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Brass
  

  
- Cage material: Brass
  

  
- Cage Type: High Strength, 2 piece, Machined
  

  
- Cage type: High strength, 2 piece, machined
  

  
- Configuration: Two
  

  
- Contact angle: 30 º
  

  
- d (in): 3.9370
  

  
- D (in): 5.9055
  

  
- D1: 5.2441 in
  

  
- d1: 4.6024 in
  

  
- D2: 5.5512 in
  

  
- d2: 4.4488 in
  

  
- Da max: 5.5709 in
  

  
- da min: 4.2717 in
  

  
- Db max: 5.6890 in
  

  
- Enclosure: Open
  

  
- I.D.: 100 mm
  

  
- Limiting Speed - Grease: 5520 RPM
  

  
- Limiting speed - grease: 5520 RPM
  

  
- Limiting Speed - Oil: 7520 RPM
  

  
- Limiting speed - oil: 7520 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 150 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO Class 5
  

  
- Preload: Normal
  

  
- r (in): 0.0591
  

  
- r1: 0.0394 in
  

  
- r1as max: 0.0394 in
  

  
- ras max: 0.0591 in
  

  
- 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/70/7020DB/GNP5/bearingfinder_2d_pdf_fixed_7020DB2FGNP5_svFEKZF.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.