# NTN 7011CDB/GNP5 Angular Contact Ball Bearing - 55 mm Bore, Duplex Back-to-Back, Nylon Cage, Open - MROSupply.com

***NTN 7011CDB/GNP5 is a duplex angular contact ball bearing in a back-to-back arrangement with a 55 mm straight bore. This open bearing features a nylon cage and is constructed from high carbon chrome steel. Designed for precision applications requiring high axial and radial load capacity in both directions.***



## Product details:

- Catalog number: 7011CDB/GNP5
- SKU: 277961
- Price: ***$716.62*** 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: 1.636 lb
- UPC: 4547359431148


## 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: 15 º
  

  
- D (in): 3.5433
  

  
- d (in): 2.1654
  

  
- D1: 3.0748 in
  

  
- d1: 2.6339 in
  

  
- D2: 3.2913 in
  

  
- d2: 2.5315 in
  

  
- Da max: 3.2677 in
  

  
- da min: 2.4409 in
  

  
- Db max: 3.3661 in
  

  
- Enclosure: Open
  

  
- I.D.: 55 mm
  

  
- Limiting Speed - Grease: 12960 RPM
  

  
- Limiting speed - grease: 12960 RPM
  

  
- Limiting Speed - Oil: 20720 RPM
  

  
- Limiting speed - oil: 20720 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 90 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
  

  
- 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/70/7011CDB/GNP5/bearingfinder_2d_pdf_fixed_7011CDB2FGNP5_wPFKgVa.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.