# NTN 7203HG1DUJ84 Angular Contact Ball Bearing - 17 mm Bore, Duplex Universal Flush Ground, Steel Cage - MROSupply.com

***NTN 7203HG1DUJ84 duplex angular contact ball bearing with a 17 mm straight bore. High-precision universal flush ground design with improved geometry steel cage. Suitable for machine tool spindles and high-speed, high-rigidity applications.***



## Product details:

- Catalog number: 7203HG1DUJ84
- SKU: 831199
- Price: ***$426.71*** 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


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


## Product attributes;

  
- 2B: 0.9449 in
  

  
- B (in): 0.4724
  

  
- 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: 25 º
  

  
- D (in): 1.5748
  

  
- d (in): 0.6693
  

  
- D1: 1.2992 in
  

  
- d2: 0.9488 in
  

  
- D4: 1.3858 in
  

  
- D5: 1.0433 in
  

  
- E (in): 0.0965
  

  
- Enclosure: Open
  

  
- I.D.: 17 mm
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 40 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 4
  

  
- Preload: Medium
  

  
- r2 max: 0.0236 in
  

  
- r3 max: 0.0118 in
  

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

- [Drawing](https://documents.mrosupply.com/product_documents/21/72/2172492/1185_S_o7fIOPI.png)
## Alternate products to `NTN 7203HG1DUJ84 Angular Contact Ball Bearing - 17 mm Bore, Duplex Universal Flush Ground, Steel Cage - MROSupply.com`:
- [NSK 7203A5TRDUMP4Y super-precision angular contact ball bearing with 17 mm bore and 30° contact angle. Universal duplex (DU) matching set with polyamide cage and ISO P4 tolerance. Engineered for high-speed precision spindle applications such as machining centers, grinders, and turning centers.](https://www.mrosupply.com/products/5035019/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.