# NTN JM205149A Tapered Roller Bearing Cone - Straight Bore, Case Carburized Steel, Inch/J Series - MROSupply.com

***NTN JM205149A is a tapered roller bearing cone with a straight bore, manufactured from case carburized steel. This cone is designed for use in inch and J series tapered roller bearing assemblies, providing reliable performance in moderate-load industrial applications.***



## Product details:

- Catalog number: JM205149A
- SKU: 274620
- Price: ***$67.74*** 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 Cones](htts://www.mrosupply.com/bearings/roller-bearings/taper-roller-bearings/taper-roller-bearing-cones/)
    - [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: 1.109 lb


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


## Product attributes;

  
- a (Effective Load Center): -0.2900 in
  

  
- B (in): 1.9685
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- Dynamic Load Rating: 23800 lbf
  

  
- Dynamic load rating: 23800 lbf
  

  
- e (Axial Load Factor): 0.33
  

  
- Height: 3.543
  

  
- I.D.: 50 mm
  

  
- Length: 3.543
  

  
- Material: Case carburized steel
  

  
- O.D.: 90 in
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- R (in): 0.2000
  

  
- Static Load Rating: 31500 lbf
  

  
- Static load rating: 31500 lbf
  

  
- Type: Cone
  

  
- Wi: 1.1024 in
  

  
- Y2 (Axial Load Factor): 1.82
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/58/15/5815581/1330_S_HfF0tXU.png)
- [Drawing](https://documents.mrosupply.com/product_documents/JM/JM515649/1330_S_A0H2fF5.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.