# NTN 6310LLU Deep Groove Ball Bearing - 50 mm Bore, Double Sealed, Stamped Steel Cage - MROSupply.com

***NTN 6310LLU 63 series single-row deep groove ball bearing with 50 mm straight bore, double rubber contact seals (NBR), and stamped steel cage. Suitable for electric motors, pumps, fans, and general rotating machinery.***



## Product details:

- Catalog number: 6310LLU
- SKU: 278772
- Price: ***$111.83*** Each
- 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: 2.381 lb


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


## Product attributes;

  
- Clearance: CN
  

  
- Height: 4.331
  

  
- I.D.: 50 mm
  

  
- Length: 4.331
  

  
- Material: Steel
  

  
- O.D.: 110 mm
  

  
- Width: 1.063
  

## Alternate products to `NTN 6310LLU Deep Groove Ball Bearing - 50 mm Bore, Double Sealed, Stamped Steel Cage - MROSupply.com`:
- [SKF 6310 2RSJEM is a 50mm bore deep groove ball bearing, double sealed with NBR rubber seals, C3 clearance, and a machined brass cage. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/320596/as-markdown/)
- [Koyo 6310 2RS is a 63 series single-row deep groove ball bearing with a 50 mm bore, 110 mm OD, and 27 mm width. It features double rubber seals (2RS) for contamination protection and a steel cage. Suitable for electric motors, pumps, and general industrial machinery.](https://www.mrosupply.com/products/1494963/as-markdown/)
- [SKF 6310-2RS1 is a 50mm bore deep groove ball bearing, double sealed with NBR rubber seals on both sides. It features a sheet metal cage and normal internal clearance. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/319382/as-markdown/)
- [SKF 6310-2RS1/C3 deep groove ball bearing, 50mm bore, double sealed with NBR rubber seals on both sides. C3 greater-than-normal clearance and sheet metal cage. Suitable for electric motors, pumps, and general industrial applications.](https://www.mrosupply.com/products/320353/as-markdown/)
- [NACHI 6310-2NSE9C3 Deep Groove Ball Bearing Single Row 50X110X27MM Two Seals Steel Cage C3 Clearance](https://www.mrosupply.com/products/5900115/as-markdown/)
- [Rollway 6310 2RS EMQ BALL 16000-61800-62200-62300](https://www.mrosupply.com/products/2890171/as-markdown/)
- [NSK 6310DDUC3 deep groove ball bearing with 50 mm bore. Double contact rubber seals (DDU) provide effective contamination protection, and C3 clearance accommodates thermal expansion. Suitable for electric motors, pumps, fans, and general industrial applications.](https://www.mrosupply.com/products/5034258/as-markdown/)
- [Koyo 6310 2RD is a single-row deep groove ball bearing with a 50 mm straight bore and 110 mm outside diameter. Part of the 63 medium series, it features a double rubber seal for contamination protection. Suitable for electric motors, pumps, and general industrial rotating equipment.](https://www.mrosupply.com/products/1494962/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.