# NTN 6308NRC3 Deep Groove Ball Bearing - 40 mm Bore, Open with Snap Ring, C3 Clearance - MROSupply.com

***NTN 6308NRC3 is a 63 series single-row deep groove ball bearing with a 40 mm straight bore. It features an open enclosure with a snap ring groove and snap ring, a steel cage, and C3 clearance. Constructed from high carbon chrome steel, it is suitable for electric motors, pumps, and general industrial machinery.***



## Product details:

- Catalog number: 6308NRC3
- SKU: 278825
- Price: ***$60.79*** Each
- Quantity: This vendor has a minimum order quantity of
2.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 2
(This is the minimum order quantity if ordering this unit alone
from the vendor. Adding other products from the same vendor will reduce
the overall requirement. If adding multiple products from same vendor,
please add all products to cart to see total minimum.)
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [6300 Series Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/6300-series-ball-bearings/)
    - [Ball Bearings](htts://www.mrosupply.com/bearings/ball-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 1.426 lb


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


## Product attributes;

  
- a (in): 0.1291
  

  
- B (in): 0.9055
  

  
- 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: One
  

  
- D (in): 3.5433
  

  
- d (in): 1.5748
  

  
- D1: 3.4169 in
  

  
- D2: 3.7992 in
  

  
- Da max: 3.2283 in
  

  
- da max: 2.1260 in
  

  
- da min: 1.8898 in
  

  
- Dynamic Load Rating: 10110 lbf
  

  
- Dynamic load rating: 10110 lbf
  

  
- Enclosure: Open
  

  
- f (in): 0.0969
  

  
- Factor: 13.2
  

  
- I.D.: 40 mm
  

  
- Limiting Speed - Grease: 7800 RPM
  

  
- Limiting speed - grease: 7800 RPM
  

  
- Limiting Speed - Oil: 9200 RPM
  

  
- Limiting speed - oil: 9200 RPM
  

  
- Material: High carbon chrome steel
  

  
- O.D.: 90 mm
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 0
  

  
- r (in): 0.0591
  

  
- r1: 0.0197 in
  

  
- Radial Internal Clearance: C3
  

  
- Radial internal clearance: C3
  

  
- ras max: 0.0591 in
  

  
- Static Load Rating: 5400 lbf
  

  
- Static load rating: 5400 lbf
  

  
- Style: Radial ball bearing
  

  
- Type: Deep Groove Ball Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/47/5047240/1202_S_OuE04sQ.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/63/6308NRC3/bearingfinder_2d_pdf_fixed_6308NRC3_1vclLDc.pdf)
## Alternate products to `NTN 6308NRC3 Deep Groove Ball Bearing - 40 mm Bore, Open with Snap Ring, C3 Clearance - MROSupply.com`:
- [SKF 6308 NR deep groove ball bearing, 40mm bore, 90mm OD, 23mm width, with snap ring groove for axial location. Open configuration with sheet metal cage and normal internal clearance. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/2070562/as-markdown/)
- [SKF 6308 NR/C3 deep groove ball bearing, 40mm bore, with snap ring groove in the outer ring for axial location. C3 greater-than-normal clearance. Sheet metal cage. Suitable for electric motors, pumps, and general industrial machinery.](https://www.mrosupply.com/products/319655/as-markdown/)
- [SKF 6308 NRJEM 40mm bore deep groove ball bearing with a snap ring groove for axial location. It features a machined brass cage for high-speed and high-temperature applications. Suitable for electric motors, pumps, and general industrial machinery.](https://www.mrosupply.com/products/320343/as-markdown/)
- [Koyo 6308 NR is a 63 series single-row deep groove ball bearing with a 40 mm straight bore. It features a snap ring groove and includes the snap ring for axial location in the housing. This medium-series bearing is designed for electric motors, pumps, fans, and general rotating machinery.](https://www.mrosupply.com/products/1494948/as-markdown/)
- [NSK 6308NRC3 deep groove ball bearing with 40 mm bore, 90 mm OD, and 23 mm width. Features a snap ring groove (N) on the outer ring and C3 internal clearance for applications with interference fits or temperature differentials. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034224/as-markdown/)
- [NSK 6308NR deep groove ball bearing with 40 mm bore and 90 mm OD. Features a snap ring groove and snap ring for axial location in the housing. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034223/as-markdown/)
- [Nachi Bearing 6308NRC3 Deep Groove Ball Bearing Open with Snap Ring & Groove](https://www.mrosupply.com/products/5900111/as-markdown/)
- [NTN 6308NR 63 series single-row deep groove ball bearing with a 40 mm straight bore. Open type with snap ring groove and snap ring included. Designed for general industrial rotating equipment such as electric motors, pumps, and fans.](https://www.mrosupply.com/products/278826/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.