# SKF NA 4903 Needle Roller Bearing 17mm Bore Machined Cage - 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.***



## Product details:

- Catalog number: NA 4903
- SKU: 318098
- Price: ***$67.14*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [SKF Bearing](https://www.mrosupply.com/brands/skf-bearing/)
- Category: 
    - [Inner Race](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/inner-race/)
    - [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: 0.088 lb


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


## Product attributes;

  
- Bearing Part: Complete bearing
  

  
- Cage: With
  

  
- Dimension Type: Metric
  

  
- Inner Diameter (mm): 17.000
  

  
- Lubricant (in Bearing): Grease
  

  
- Material/Treatment: Bearing steel
  

  
- Outer Diameter (mm): 30.000
  

  
- Relubrication Feature: With
  

  
- Sealing: None
  

  
- Width (mm): 13.000
  
## Product documents / software:

- [Abutment dimensions](https://documents.mrosupply.com/product_documents/NK/NKI%2080/35/111220004720-201000020wp_gtlNFQs.svg)
- [Dimensions](https://documents.mrosupply.com/product_documents/NK/NKI%2080/35/111220004220-20150320002720-201000020wp_ZuDpEQe.svg)
- [DXF](https://documents.mrosupply.com/product_documents/NA/NA%204903/NA_4903_6Gzo5rO.dxf)
## Alternate products to `SKF NA 4903 Needle Roller Bearing 17mm Bore Machined Cage - MROSupply.com`:
- [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/)
- [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](https://www.mrosupply.com/products/1911999/as-markdown/)

## Product's reviews:
- Sales - GREAT PRODUCT CUSTOMER WILL PURCHASE AGAIN.
- Purchase of bearing - exactly what we needed and it showed up in only 1 day thank you so much.
- Buyer - perfect sevice
- Skf bearing f4b 108-rm purchase - Great price and quick shipping for a high quality SKF bearing. Exactly what we needed.




## 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.