# NTN 7211CG1DUJ74 Angular Contact Ball Bearing - 55 mm Bore, Open, Phenolic Cage, Duplex Universal Flush Ground - MROSupply.com

***NTN 7211CG1DUJ74 is a 72 series single-row angular contact ball bearing with a 55 mm straight bore. Open design with a phenolic cage. Duplex universal flush ground configuration allows mounting in tandem, back-to-back, or face-to-face arrangements. Made from high carbon chrome steel for precision spindle and machine tool applications.***



## Product details:

- Catalog number: 7211CG1DUJ74
- SKU: 831294
- Price: ***$1,110.62*** 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
- UPC: 3413520176488


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


## Product attributes;

  
- 2B: 1.6535 in
  

  
- B (in): 0.8268
  

  
- Ball Material: Steel
  

  
- Ball material: Steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Phenolic
  

  
- Cage material: Phenolic
  

  
- Cage Type: Stratified
  

  
- Cage type: Stratified
  

  
- Configuration: Two
  

  
- Contact angle: 15 º
  

  
- D (in): 3.9370
  

  
- d (in): 2.1654
  

  
- D1: 3.4252 in
  

  
- d2: 2.6772 in
  

  
- D4: 3.6417 in
  

  
- D5: 2.8543 in
  

  
- E (in): 0.0827
  

  
- Enclosure: Open
  

  
- I.D.: 55 mm
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 100 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 4
  

  
- Preload: Light
  

  
- r2 max: 0.0591 in
  

  
- r3 max: 0.0236 in
  

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

- [Drawing](https://documents.mrosupply.com/product_documents/21/72/2172492/1185_S_o7fIOPI.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/72/7211CG1DUJ74/bearingfinder_2d_pdf_fixed_7211CG1DUJ74_uI9nlrg.pdf)
## Alternate products to `NTN 7211CG1DUJ74 Angular Contact Ball Bearing - 55 mm Bore, Open, Phenolic Cage, Duplex Universal Flush Ground - MROSupply.com`:
- [NSK 7211CTRDULP4Y super-precision angular contact ball bearing with 55 mm bore, 15° contact angle, ISO P4 precision, and universal duplex (DU) matching for back-to-back or face-to-face mounting. Features a polyamide cage and is designed for high-speed spindle applications in machining centers, grinders, and turning centers.](https://www.mrosupply.com/products/5035140/as-markdown/)
- [SKF 7211 CD/P4ADGA angular contact ball bearing, 55mm bore, 15° contact angle. Super-precision P4A tolerance class with non-metallic cage. Bearing steel construction. Designed for high-speed machine tool spindles and pumps requiring precise axial and radial load support.](https://www.mrosupply.com/products/312987/as-markdown/)
- [Koyo 7211C-5GLX2FGP4 is a precision angular contact ball bearing with a 55 mm straight bore. It features Koyo's 5G improved internal geometry, P4 precision class, and factory grease pack (FY). Designed for high-speed spindles and machine tool applications requiring accurate axial and radial load support.](https://www.mrosupply.com/products/1495291/as-markdown/)
- [NTN 7211CGD2/GLP4 is a 72 series single-row angular contact ball bearing with a 55 mm straight bore. This open bearing features a nylon cage and is configured as a duplex universal flush ground pair for matched preload applications. Constructed from high carbon chrome steel, it is suitable for machine tool spindles and precision rotating assemblies.](https://www.mrosupply.com/products/277748/as-markdown/)
- [FAG B7211C.T.P4S.DUL super precision angular contact ball bearing with 15° contact angle, 2 1/6" bore, and universal tandem arrangement. ISO P4 precision class ensures high running accuracy for machine tool spindles and high-speed applications. Standard or relieved IR symmetrical design.](https://www.mrosupply.com/products/2177876/as-markdown/)






## 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.