# NTN 423140 Double Row Tapered Roller Bearing - Inch Series, Straight Bore - MROSupply.com

***NTN 423140 double row tapered roller bearing, inch series, straight bore. Designed for heavy radial and axial loads in industrial gearboxes, rolling mills, and mining equipment.***



## Product details:

- Catalog number: 423140
- SKU: 283113
- Price: ***$9,263.54*** 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: 104.719 lb
- UPC: 4547359302226


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


## Product attributes;

  
- B1: 5.5118 in
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- C (in): 4.4094
  

  
- Configuration: Two
  

  
- D (in): 13.3858
  

  
- d (in): 7.8740
  

  
- Dynamic Load Rating: 245000 lbf
  

  
- Dynamic load rating: 245000 lbf
  

  
- e: 0.37
  

  
- Enclosure: Open
  

  
- I.D.: 200 mm
  

  
- Material: Through hardened steel
  

  
- O.D.: 320 in
  

  
- Precision Rating: Class 0
  

  
- Precision rating: Class 0
  

  
- r (in): 0.1575
  

  
- Static Load Rating: 430000 lbf
  

  
- Static load rating: 430000 lbf
  

  
- Style: TDO
  

  
- Type: Tapered Roller Bearing
  

  
- Width: 140 mm
  

  
- Y0: 1.76
  

  
- Y1: 1.80
  

  
- Y2: 2.69
  
## Product documents / software:

- [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.