# NTN 430310 Double Row Tapered Roller Bearing - 4.0000 in Bore, Straight Bore, Inch Series - MROSupply.com

***NTN 430310 double row tapered roller bearing, 4.0000 in straight bore, inch series. Accommodates combined radial and axial loads in heavy-duty gearboxes and mill drives. Straight bore design simplifies mounting on cylindrical shafts.***



## Product details:

- Catalog number: 430310
- SKU: 283112
- Price: ***$1,426.63*** 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: 5.997 lb
- UPC: 4547359302868


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


## Product attributes;

  
- B1: 2.5197 in
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- C (in): 2.0276
  

  
- Configuration: Two
  

  
- D (in): 4.3307
  

  
- d (in): 1.9685
  

  
- Dynamic Load Rating: 51000 lbf
  

  
- Dynamic load rating: 51000 lbf
  

  
- e: 0.35
  

  
- Enclosure: Open
  

  
- I.D.: 50 mm
  

  
- Material: Through hardened steel
  

  
- O.D.: 90 in
  

  
- Precision Rating: Class 0
  

  
- Precision rating: Class 0
  

  
- r (in): 0.0984
  

  
- Static Load Rating: 68500 lbf
  

  
- Static load rating: 68500 lbf
  

  
- Style: TDO
  

  
- Type: Tapered Roller Bearing
  

  
- Y0: 1.91
  

  
- Y1: 1.96
  

  
- Y2: 2.91
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/42/423132/1612_S_LlnrPBQ.png)
- [Drawing](https://documents.mrosupply.com/product_documents/50/48/5048963/1612_S_IXuBsH1.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.