# NTN 3207B Double-Row Angular Contact Ball Bearing - 35 mm Bore, Open Type, Straight Bore - MROSupply.com

***NTN 3207B double-row angular contact ball bearing with 35 mm straight bore and open design. Accommodates combined radial and axial loads in both directions, providing high stiffness in a compact envelope. Suitable for pumps, electric motors, and gearboxes where bidirectional thrust capacity is required.***



## Product details:

- Catalog number: 3207B
- SKU: 829731
- Price: ***$112.66*** 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: 1.058 lb


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


## Product attributes;

  
- a (in): 1.8583
  

  
- B (in): 1.0630
  

  
- Ball Material: Steel
  

  
- Ball material: Steel
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cage Material: Steel
  

  
- Cage material: Steel
  

  
- Cage Type: Pressed
  

  
- Cage type: Pressed
  

  
- Configuration: Two
  

  
- Contact angle: 32 º
  

  
- D (in): 2.8346
  

  
- d (in): 1.3780
  

  
- Dynamic Load Rating: 8300 lbf
  

  
- Dynamic load rating: 8300 lbf
  

  
- Enclosure: Open
  

  
- I.D.: 35 mm
  

  
- Limiting Speed - Grease: 6100 RPM
  

  
- Limiting speed - grease: 6100 RPM
  

  
- Limiting Speed - Oil: 8200 RPM
  

  
- Limiting speed - oil: 8200 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 72 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Outside Ring Type: Straight
  

  
- Precision: Class 0
  

  
- r (in): 0.0394
  

  
- Radial Internal Clearance: CN
  

  
- Radial internal clearance: CN
  

  
- Static Load Rating: 8450 lbf
  

  
- Static load rating: 8450 lbf
  

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

- [Drawing](https://documents.mrosupply.com/product_documents/50/47/5047109/1226_S_pwNYU8H.png)
## Alternate products to `NTN 3207B Double-Row Angular Contact Ball Bearing - 35 mm Bore, Open Type, Straight Bore - MROSupply.com`:
- [Nachi Bearing 5207 Double Row Angular Contact Ball Bearing Open 20](https://www.mrosupply.com/products/207987/as-markdown/)
- [SKF 3207 A is a 1-3/8 in bore double-row angular contact ball bearing with a 30° contact angle. It features a sheet metal cage and is constructed from bearing steel. Designed to accommodate combined radial and axial loads in both directions, it is suitable for pumps, gearboxes, and general industrial machinery.](https://www.mrosupply.com/products/315831/as-markdown/)
- [Rollway 3207 35 mm Bore Size, 72 mm Outside Diameter, Angular Contact Ball Bearing, Double Row, Straight Bore, 52100 Bearing Steel, Normal Radial Clearance](https://www.mrosupply.com/products/2889751/as-markdown/)
- [FAG 3207-BD double row angular contact ball bearing with 35mm bore and 72mm OD. Features a 40° contact angle for combined radial and axial loads. Open design, suitable for high-speed applications. Precision German engineering from Schaeffler.](https://www.mrosupply.com/products/2174385/as-markdown/)
- [NSK 3207J double-row angular contact ball bearing with 35 mm bore. It features a pressed steel cage and is open (unsealed). This bearing carries combined radial and axial loads in both directions, making it suitable for pumps and machine tools.](https://www.mrosupply.com/products/5032568/as-markdown/)
- [NTN 5207 double-row angular contact ball bearing, 35 mm straight bore, open design. Accommodates combined radial and axial loads in both directions with high stiffness. Suitable for pumps, compressors, and gearboxes where space is limited.](https://www.mrosupply.com/products/284085/as-markdown/)
- [NTN 3207 32 series double-row angular contact ball bearing with 35 mm straight bore. Open design with no seals or shields. Suitable for applications requiring high axial load capacity in both directions, such as pumps and gearboxes.](https://www.mrosupply.com/products/284191/as-markdown/)
- [NSK 5207J double-row angular contact ball bearing with 35 mm bore. It features a pressed steel cage and is open (unsealed). This bearing carries combined radial and axial loads in both directions, making it suitable for pumps and machine tools.](https://www.mrosupply.com/products/5032927/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.