# IKO Bearing NA4903 Machined Type Needle Roller Bearings | MROSupply.com - MROSupply.com

***IKO Bearing NA4903 Machined Type Needle Roller Bearings, 17 mm Inside Diameter, 30 mm Outside Diameter, 13 mm Width, High Carbon Steel, Oil Hole, Inner Ring***



## Product details:

- Catalog number: NA4903
- SKU: 1911999
- Price: ***$31.71*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [IKO Bearing](https://www.mrosupply.com/brands/iko-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: 1.000 lb
- Technicall support: contact supplier for technical support on 562 941 1019


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


## Product attributes;

  
- Bearing Material: High Carbon Steel
  

  
- Dynamic Load Capacity: 11700 N
  

  
- Enclosure: Open
  

  
- I.D.: 17 mm
  

  
- Maximum Speed: 18000 rpm
  

  
- O.D.: 30 mm
  

  
- Oil Hole: With Oil Hole
  

  
- Series: NA49 Metric Series
  

  
- Static Load Capacity: 15600 N
  

  
- Type: Caged Machined
  

  
- Width: 13 mm
  
## Product documents / software:

- [Catalog](https://documents.mrosupply.com/product_documents/63/77/6377652/1594E_NA_TAF-SG_Re16pVU.pdf)
## Alternate products to `IKO Bearing NA4903 Machined Type Needle Roller Bearings | MROSupply.com - MROSupply.com`:
- [SKF NA 4903 is a 17mm bore needle roller bearing with a machined cage. This bearing features a full complement of rollers for high radial load capacity in a compact cross-section. Suitable for gearboxes, pumps, and machine tools where space is limited.](https://www.mrosupply.com/products/318098/as-markdown/)
- [Koyo NA4903 is a machined ring needle roller bearing with a 17 mm bore, 30 mm OD, and 13 mm width. Open type with solid race, no inner ring. Suitable for compact radial load applications in gearboxes and industrial machinery.](https://www.mrosupply.com/products/1497124/as-markdown/)

## Product's reviews:
- Combination thrust-radial bearing - Special application bearings like this one is hard to find. It's great that I can turn to MRO Supply for my bearing needs.
- Excellent service! - I like this company. They are quick with their shipping, their prices are very fair, and the orders are always right!
- Bearings - perfect just what i ordered shipping was very fast and it got the job done




## 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.