# NTN BST50X100-1BDTFTP4 Precision Angular Contact Thrust Ball Bearing for Ball Screws - 50 mm Bore, DTFT Arrangement, Open Type, P4 Precision - MROSupply.com

***NTN BST50X100-1BDTFTP4 quadruple-row angular contact thrust ball bearing for ball screws, 50 mm bore. DTFT arrangement (two rows bear axial load in each direction), open type, P4 precision class. Designed for high-speed, high-precision ball screw support applications.***



## Product details:

- Catalog number: BST50X100-1BDTFTP4
- SKU: 276135
- Price: ***$1,490.64*** 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: 6.415 lb


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


## Product attributes;

  
- 4B: 3.1496 in
  

  
- B (in): 0.7874
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Resin
  

  
- Cage material: Resin
  

  
- Cage Type: Molded
  

  
- Cage type: Molded
  

  
- Configuration: Four
  

  
- Contact angle: 60 º
  

  
- d (in): 1.9685
  

  
- D (in): 3.9370
  

  
- d1: 2.9843 in
  

  
- D1: 3.3937 in
  

  
- d2: 2.7598 in
  

  
- D2: 3.6457 in
  

  
- Dynamic Load Rating: 22700 lbf
  

  
- Dynamic load rating: 22700 lbf
  

  
- Enclosure: Open
  

  
- I.D.: 50 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
  

  
- r (in): 0.0394
  

  
- r1: 0.0236 in
  

  
- Static Load Rating: 68500 lbf
  

  
- Static load rating: 68500 lbf
  

  
- Type: Ball Screw Support Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/27/61/276151/1639_S.png)
- [Drawing](https://documents.mrosupply.com/product_documents/BS/BST40X90-1BDTFTP4/1639_S_c4Ysr5s.png)






## 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.