# NTN JELFU-1/2 Ultra-Class 4-Bolt Square Flanged Unit - 1/2 inch Bore, Eccentric Collar Lock, Cast Iron Housing - MROSupply.com

***NTN JELFU-1/2 Ultra-Class 4-bolt square flanged unit with a 1/2 inch bore and eccentric collar lock. The cast iron housing provides durability for light-duty industrial applications such as conveyors and packaging equipment.***



## Product details:

- Catalog number: JELFU-1/2
- SKU: 274750
- Price: ***$61.78*** Each
- Quantity: This vendor has a minimum order quantity of
2.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 2
(This is the minimum order quantity if ordering this unit alone
from the vendor. Adding other products from the same vendor will reduce
the overall requirement. If adding multiple products from same vendor,
please add all products to cart to see total minimum.)
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [4-Bolt Flange](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/flanged-mounted-bearings/4-bolt-flange/)
    - [Flanged Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/flanged-mounted-bearings/)
    - [Mounted Ball Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/mounted-ball-bearings/)
    - [Mounted Bearings](htts://www.mrosupply.com/bearings/mounted-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 1.168 lb


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


## Product attributes;

  
- A (in): 1.1094
  

  
- A0: 1.5469 in
  

  
- A1: 0.5000 in
  

  
- A2: 0.6563 in
  

  
- B1: 1.1260 in
  

  
- Bearing Number: A-JEL201-008D1
  

  
- Bearing number: A-JEL201-008D1
  

  
- Bearing Type: Ball Bearing
  

  
- d (in): 1/2
  

  
- Dynamic Load Rating: 2160 lbf
  

  
- Dynamic load rating: 2160 lbf
  

  
- End Type: Open
  

  
- End type: Open
  

  
- F (in): 0.1024
  

  
- Finish/Coating: Black oxide
  

  
- Housing Construction: 1 Piece
  

  
- Housing construction: 1 Piece
  

  
- Housing Material: Cast Iron
  

  
- Housing material: Cast iron
  

  
- Housing Number: FU201D1V50
  

  
- J (in): 2.1250
  

  
- L (in): 3.0000
  

  
- Locking Device: Eccentric Locking Collar
  

  
- Locking device: Eccentric locking collar
  

  
- Lubrication: Relubricatable
  

  
- Max Rotational Speed: 11000 RPM
  

  
- Max Tightening Torque: 69 lb·in
  

  
- N (in): 0.4219
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Performance: Light Duty
  

  
- S: 0.2559 in
  

  
- Seal Material: Nitrile Rubber
  

  
- Seal material: Nitrile rubber
  

  
- Seal Type: Contact
  

  
- Seal type: Contact
  

  
- Static Load Rating: 1030 lbf
  

  
- Static load rating: 1030 lbf
  

  
- Type: 4-Bolt Square Flanged Unit
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/27/47/274762/olt-Flanged-Unit--Eccentric-Lock--JELFU-Type_S_BZ8ERNz.png)
- [2D Sectional View PDF](https://documents.mrosupply.com/product_documents/JE/JELFU-1/2/bearingfinder_2d_pdf_fixed_JELFU-12F2_S4qGIxH.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.