# Martin 6B-JA Size 6 Coupling Hub for JA QD Bushing, Cast Iron, 4.000" OD - MROSupply.com

***Martin 6B-JA size 6 coupling hub for Quadra-Flex or Martin-Flex flexible shaft couplings. Cast iron construction with 4.000" outside diameter. Uses JA series Quick Disconnect bushing (sold separately). Industry-interchangeable QD mounting for easy installation and removal.***



## Product details:

- Catalog number: 6B-JA
- SKU: 249987
- Price: ***$60.44*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Martin Sprocket](https://www.mrosupply.com/brands/martin-sprocket/)
- Category: 
    - [Hubs](htts://www.mrosupply.com/shaft-couplings-and-collars/elastomeric-sleeve-couplings/components/hubs/)
    - [Components](htts://www.mrosupply.com/shaft-couplings-and-collars/elastomeric-sleeve-couplings/components/)
    - [Elastomeric Sleeve Couplings](htts://www.mrosupply.com/shaft-couplings-and-collars/elastomeric-sleeve-couplings/)
    - [Shaft Couplings and Collars](htts://www.mrosupply.com/shaft-couplings-and-collars/)
- Unit of measure: each
- Weight: 1.300 lb
- Technicall support: contact supplier for technical support on 323-728-8117


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


## Product attributes;

  
- Material: Cast Iron
  

  
- Outside Dia: 4.000"
  


## Product's reviews:
- Good stock - I was pleased with the help of customer service to answer my questions concerning inventory and how quickly I received my product. Thank you.
- Plate gear - Just what I ordered at a reasonable price. Thank you, Dallas
- Spur gear - Our Yellow Karcher "Duckee" steers once more.
The spur gear works as advertised!!!
- Durable and high quality - I bought a second one to keep as a spare, but the first one still hasn’t shown any signs of wear. Seems like a quality part.