# NTN 30312D Tapered Roller Bearing - 60 mm Bore, Single Row Metric Series, Open - MROSupply.com

***NTN 30312D single row metric tapered roller bearing with 60 mm straight bore. Open design with through hardened steel construction for combined radial and axial loads. Suitable for gearboxes, wheel hubs, and industrial machinery.***



## Product details:

- Catalog number: 30312D
- SKU: 281763
- Price: ***$81.51*** 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: 4.343 lb


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


## Product attributes;

  
- Bearing Type: Tapered roller bearing
  

  
- Enclosure: Open
  

  
- Material: Through hardened steel
  
## Product documents / software:

- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/30/30312D/bearingfinder_2d_pdf_fixed_30312D_KXymCAz.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.