# NTN 18790/18720 Tapered Roller Bearing - Inch Series, Open, Case Carburized Steel - MROSupply.com

***NTN 18790/18720 inch series tapered roller bearing set consisting of cone 18790 and cup 18720. Straight bore, open enclosure, case carburized steel construction. Single-row design for high radial and axial load capacity in industrial applications.***



## Product details:

- Catalog number: 18790/18720
- SKU: 282807
- Price: ***$33.56*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Taper Roller Bearing Full Assemblies](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/taper-roller-bearing-full-assemblies/)
    - [Taper Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.825 lb


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


## Product attributes;

  
- a (Effective Load Center): -0.0300 in
  

  
- B (in): 2.0000
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cone Number: 18790
  

  
- Configuration: One
  

  
- Cup Number: 18720
  

  
- D (in): 3.3465
  

  
- Dynamic Load Rating: 11100 lbf
  

  
- Dynamic load rating: 11100 lbf
  

  
- e (Axial Load Factor): 0.41
  

  
- Enclosure: Open
  

  
- I.D.: 2 in
  

  
- Lubrication: w/o Oil Hole
  

  
- Material: Case carburized steel
  

  
- O.D.: 3.3465 in
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision Rating: Class 4
  

  
- Precision rating: Class 4
  

  
- R (in): 0.14
  

  
- r (in): 0.0600
  

  
- Static Load Rating: 14600 lbf
  

  
- Static load rating: 14600 lbf
  

  
- Style: Cone & cup
  

  
- Type: Tapered Roller Bearing
  

  
- U: 2.44 in
  

  
- V: 2.20 in
  

  
- W: 0.6875 in
  

  
- Wi: 0.6875 in
  

  
- Wo: 0.5313 in
  

  
- X: 3.15 in
  

  
- Y2 (Axial Load Factor): 1.48
  

  
- Z: 3.03 in
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/64/22/6422118/1329_S_T0prz4G.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/18/18790/18720/bearingfinder_2d_pdf_fixed_187902F18720_BMgKb47.pdf)






## 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.