# NTN NA4911R Machined Ring Needle Roller Bearing - 55 mm Bore, With Inner Ring - MROSupply.com

***NTN NA4911R is a machined ring needle roller bearing with a 55 mm bore and an inner ring. This NA series bearing is designed for high radial load capacity in compact spaces. It is an open bearing suitable for applications requiring precise roller guidance and high rigidity.***



## Product details:

- Catalog number: NA4911R
- SKU: 272757
- Price: ***$115.10*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Full Complement Needle Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/full-complement-needle-roller-bearings/)
    - [Needle Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.873 lb


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


## Product attributes;

  
- Height: 3.15
  

  
- I.D.: 55 mm
  

  
- Length: 3.15
  

  
- O.D.: 80 mm
  

  
- Width: 0.9843
  







## 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.