# NTN HH421210 Tapered Roller Bearing Cup - Inch Series, Straight Bore - MROSupply.com

***NTN HH421210 is a single-row tapered roller bearing cup from the inch series. It features a straight bore and is designed for use with a matching cone in heavy-duty industrial applications such as gearboxes and axle housings.***



## Product details:

- Catalog number: HH421210
- SKU: 275213
- Price: ***$307.57*** 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 Cups](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/taper-roller-bearing-cups/)
    - [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: 5.622 lb
- UPC: 4547359474459


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


## Product attributes;

  
- Height: 7.25
  

  
- I.D.: 3.875 in
  

  
- Length: 7.25
  

  
- Material: Carburized Steel
  

  
- O.D.: 7.25 in
  

  
- Width: 2.0625
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048621/1357_S_VJ8AJoY.png)
- [Drawing 1357_S](https://documents.mrosupply.com/product_documents/28/31/283133/1357_S_Hdvi9EL.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.