# NTN 67790/67720D+AC180 Tapered Roller Bearing - Inch Series, Double Cone Assembly, Straight Bore, Open - MROSupply.com

***NTN 67790/67720D+AC180 is an inch series tapered roller bearing double cone assembly with a straight bore. This open bearing features case carburized steel construction for durability in heavy-duty industrial applications such as gearboxes and axle housings.***



## Product details:

- Catalog number: 67790/67720D+AC180
- SKU: 278286
- Price: ***$3,091.70*** 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: 30.660 lb
- UPC: 4550253056393


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


## Product attributes;

  
- B (in): 7.0000
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Cone Number: 67790
  

  
- Configuration: Two
  

  
- Cup Number: 67720D
  

  
- D (in): 9.7500
  

  
- Dynamic Load Rating: 83000 lbf
  

  
- Dynamic load rating: 83000 lbf
  

  
- e (Axial Load Factor): 0.44
  

  
- Enclosure: Open
  

  
- Lubrication: w/o Oil Hole
  

  
- Material: Case carburized steel
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- r (in): 0.0300
  

  
- R (in): 0.14
  

  
- Static Load Rating: 175000 lbf
  

  
- Static load rating: 175000 lbf
  

  
- Style: Cone & cup
  

  
- Type: Tapered Roller Bearing
  

  
- Wi: 2.0313 in
  

  
- Wo: 3.3125 in
  

  
- Y2 (Axial Load Factor): 1.36
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/64/22/6422118/1329_S_T0prz4G.png)






## 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.