# Martin J 3 3/4 QD Bushing Type J 3-3/4" Bore Ductile Iron - MROSupply.com

***Martin J 3 3/4 Quick Disconnect (QD) bushing, Type J, 3-3/4" bore, ductile iron construction. Industry-interchangeable with Dodge, Browning, Gates QD systems. Includes 7/8" x 7/16" keyway and setscrews for secure shaft mounting. Torque rating: 45,000 in-lb.***



## Product details:

- Catalog number: J 3 3/4
- SKU: 247641
- Price: ***$295.09*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Martin Sprocket](https://www.mrosupply.com/brands/martin-sprocket/)
- Category: 
    - [Type J](htts://www.mrosupply.com/bushings/quick-disconnect-bushings/type-j/)
    - [Quick Disconnect Bushings](htts://www.mrosupply.com/bushings/quick-disconnect-bushings/)
    - [Bushings](htts://www.mrosupply.com/bushings/)
- Unit of measure: each
- Weight: 16.600 lb
- Technicall support: contact supplier for technical support on 323-728-8117


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


## Product attributes;

  
- Bore Size: 3-3/4"
  

  
- Keyway: 7/8" x 7/16"
  

  
- Material: Ductile Iron
  

## Alternate products to `Martin J 3 3/4 QD Bushing Type J 3-3/4" Bore Ductile Iron - MROSupply.com`:
- [TB Woods J334 Sure-Grip QD bushing in the J series with a 3-3/4" finished bore. Cast-iron body with standard ANSI keyway and three 5/8-11 capscrews, rated for 55,000 in-lb torque capacity. Designed for conventional or reverse mounting on QD-bored sheaves and sprockets.](https://www.mrosupply.com/products/338398/as-markdown/)

## Product's reviews:
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The spur gear works as advertised!!!
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