Kuchar All Crop Progressive Concaves have a proprietary and patented design that’s far superior to OEM concaves. Kuchar Progressive Concaves have 65 % more open area in the thresh and separation area than John Deere OEM Round Bar Concaves. 

​

Kuchar Progressive Concaves are slightly narrower in front and gain width toward the back,  allowing you to run a wider concave setting with more rotor speed. This results in better separation and practically eliminates rotor loss compared to OEM equipment.  

​

Kuchar  Progressive Concaves eliminate material build-up in the concave and improve material

flow for more capacity. You get a cleaner sample in the bin and less grain on the ground.  

 

Kuchar Progressive Concaves are available for Deere, Case IH, New Holland and Massey

Ferguson combines.