# NTN 6808 Deep Groove Ball Bearing - 40 mm Bore, Open, Thin Section - MROSupply.com

***NTN 6808 thin-section deep groove ball bearing with 40 mm straight bore. Open design with no seals or shields for minimal axial space applications. Single-row radial ball construction provides low-friction operation in light-duty machinery and instrumentation.***



## Product details:

- Catalog number: 6808
- SKU: 283921
- Price: ***$130.37*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Thin Section Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/thin-section-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.066 lb
- UPC: 4547359006216


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


## Product attributes;

  
- Clearance: CN
  

  
- Enclosure: Open
  

  
- Height: 2.047
  

  
- I.D.: 40 mm
  

  
- Length: 2.047
  

  
- Material: Steel
  

  
- O.D.: 52 mm
  

  
- Width: 0.2756
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048825/1148_S_oKE47Yd.png)
- [Drawing 1148_S](https://documents.mrosupply.com/product_documents/28/30/283018/1148_S_SlHIL5w.png)
## Alternate products to `NTN 6808 Deep Groove Ball Bearing - 40 mm Bore, Open, Thin Section - MROSupply.com`:
- [Nachi Bearing 6808 Deep Groove Ball Bearing Open](https://www.mrosupply.com/products/208094/as-markdown/)
- [Koyo 6808 deep groove ball bearing with 40 mm bore, 52 mm OD, and 7 mm width. Open type with straight bore. Single-row radial design for general industrial rotating equipment.](https://www.mrosupply.com/products/1495103/as-markdown/)
- [NSK 6808 deep groove ball bearing with 40 mm bore and 52 mm outside diameter. Open design with no seals or shields, pressed steel cage, and normal clearance. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034529/as-markdown/)
- [SKF 61808 is a 40mm bore deep groove ball bearing from the thin-section 61800 series. It features a sheet metal cage and is open (unsealed). Suitable for applications requiring a compact radial bearing with low cross-section.](https://www.mrosupply.com/products/326273/as-markdown/)
- [FAG 61808-HLC Generation C deep groove ball bearing, 40mm bore, single-row radial design for low friction and high-speed operation. Suitable for industrial applications requiring reliable performance and long service life.](https://www.mrosupply.com/products/2175280/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.