# NSK 6306C3 Deep Groove Ball Bearing - 30 mm Bore, C3 Clearance - MROSupply.com

***NSK 6306C3 single-row deep groove ball bearing with 30 mm bore and C3 clearance. Open design with pressed steel cage. Suitable for electric motors, pumps, fans, and general industrial applications.***



## Product details:

- Catalog number: 6306C3
- SKU: 5034171
- Price: ***$39.08*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NSK Bearings](https://www.mrosupply.com/brands/nsk-bearings/)
- 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: 0.748 lb
- Returns: Yes


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



## Alternate products to `NSK 6306C3 Deep Groove Ball Bearing - 30 mm Bore, C3 Clearance - MROSupply.com`:
- [SKF 6306/C3 is a 30mm bore deep groove ball bearing with C3 greater-than-normal clearance. It features a sheet metal cage and is made of bearing steel. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/319650/as-markdown/)
- [SKF 6306 JEM is a 30mm bore deep groove ball bearing with a machined brass cage and C3 clearance. This open bearing is designed for high-speed applications requiring precise radial load support. Suitable for electric motors, pumps, and general industrial machinery.](https://www.mrosupply.com/products/320024/as-markdown/)
- [Nachi Bearing 6306C3 Deep Groove Ball Bearing Open](https://www.mrosupply.com/products/207673/as-markdown/)
- [Koyo 6306 is a 63 series single-row deep groove ball bearing with a 30 mm bore, 72 mm OD, and 19 mm width. Open type design for general industrial rotating equipment such as electric motors, pumps, and fans.](https://www.mrosupply.com/products/1494925/as-markdown/)
- [NTN 6306C3 is a 63 series single-row deep groove ball bearing with a 30 mm straight bore. It is open (no seals or shields) and features C3 internal clearance for applications requiring thermal expansion accommodation. Used in electric motors, pumps, fans, and general industrial rotating machinery.](https://www.mrosupply.com/products/278926/as-markdown/)
- [FAG 6306.C3 deep groove ball bearing with 30mm bore and 72mm OD. Features C3 internal clearance for applications requiring higher operating temperatures or interference fits. Single row design accommodates radial and axial loads. Precision engineered by Schaeffler for reliable performance.](https://www.mrosupply.com/products/2176026/as-markdown/)

## Product's reviews:
- Purchasing specialist - Great!!!
- Had what i needed - Found the bearing I needed. Reasonable price. Great phone support.
- Sales - Great Service !!




## 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.