# NTN 7310BL1BG Angular Contact Ball Bearing - 50 mm Bore, Open, Brass Cage - MROSupply.com

***NTN 7310BL1BG is a single-row angular contact ball bearing with a 50 mm straight bore. It features an open enclosure and a brass cage, suitable for high-speed and high-precision applications requiring axial load capacity in one direction. Constructed from high carbon chrome steel.***



## Product details:

- Catalog number: 7310BL1BG
- SKU: 277602
- Price: ***$203.19*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Single Row Angular Contact Bearings](htts://www.mrosupply.com/bearings/ball-bearings/angular-contact-ball-bearings/single-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: 2.377 lb
- UPC: 4547359450682


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


## Product attributes;

  
- a (Load Center): 1.8504 in
  

  
- B (in): 1.0630
  

  
- Ball Material: Steel
  

  
- Ball material: Steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Brass
  

  
- Cage material: Brass
  

  
- Cage Type: Machined
  

  
- Cage type: Machined
  

  
- Configuration: One
  

  
- Contact angle: 40 º
  

  
- d (in): 1.9685
  

  
- D (in): 4.3307
  

  
- Da max: 3.9370 in
  

  
- da min: 2.3622 in
  

  
- Db max: 4.1142 in
  

  
- db min: 2.1850 in
  

  
- Double Row Width: 2.1260 in
  

  
- Dynamic Load Rating: 15300 lbf
  

  
- Dynamic load rating: 15300 lbf
  

  
- Enclosure: Open
  

  
- I.D.: 50 mm
  

  
- Limiting Speed - Grease: 6000 RPM
  

  
- Limiting speed - grease: 6000 RPM
  

  
- Limiting Speed - Oil: 8100 RPM
  

  
- Limiting speed - oil: 8100 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 110 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 0
  

  
- Quadruple Row Width: 4.2520 in
  

  
- r (in): 0.0787
  

  
- r1: 0.0394 in
  

  
- r1as max: 0.0394 in
  

  
- ras max: 0.0787 in
  

  
- Static Load Rating: 10800 lbf
  

  
- Static load rating: 10800 lbf
  

  
- Triple Row Width: 3.1890 in
  

  
- Type: Angular Contact Ball Bearing
  

  
- Width: 27 mm
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/59/73/5973972/1162_S_9Tu0vwD.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/73/7310BL1BG/bearingfinder_2d_pdf_fixed_7310BL1BG_ZccTfdl.pdf)
## Alternate products to `NTN 7310BL1BG Angular Contact Ball Bearing - 50 mm Bore, Open, Brass Cage - MROSupply.com`:
- [SKF 7310 BECBM is a 50mm bore angular contact ball bearing with a 40° contact angle and machined brass cage. Designed for combined radial and axial loads in pumps, gearboxes, and machine-tool spindles.](https://www.mrosupply.com/products/313885/as-markdown/)
- [SKF 7310 BECBY is a 50mm bore angular contact ball bearing with a 40° contact angle and machined brass cage. Designed for combined radial and axial loads in pumps, gearboxes, and machine-tool spindles.](https://www.mrosupply.com/products/313791/as-markdown/)
- [SKF 7310 BEP is a 50mm bore angular contact ball bearing with a 40° contact angle and enhanced polyamide cage. Designed for combined radial and axial loads in pumps, gearboxes, and machine-tool spindles.](https://www.mrosupply.com/products/313716/as-markdown/)
- [Nachi Bearing 7310B Angular Contact Ball Bearing Single 40](https://www.mrosupply.com/products/208186/as-markdown/)
- [SKF 7310 BECBJ is a 50mm bore angular contact ball bearing with a 40° contact angle and a machined brass cage. Designed for combined radial and axial loads in pumps, gearboxes, and machine-tool spindles.](https://www.mrosupply.com/products/313591/as-markdown/)
- [NTN 7310BG single row angular contact ball bearing with a 50 mm straight bore. Open type design with a 40° contact angle for combined radial and axial loads. Suitable for machine tool spindles, pumps, and compressors.](https://www.mrosupply.com/products/277603/as-markdown/)
- [Rollway 7310 B 50 mm Bore Size, 110 mm Outside Diameter, Angular Contact Ball Bearing, Straight Bore, 52100 Bearing Steel, Normal Radial Clearance](https://www.mrosupply.com/products/2889887/as-markdown/)
- [Rollway 7310 BM 50 mm Bore Size, 110 mm Outside Diameter, Angular Contact Ball Bearing, Straight Bore, 52100 Bearing Steel, Normal Radial Clearance](https://www.mrosupply.com/products/2889888/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.