Click here for information about MAD Concaves for X9 Combines


Swapping out traditional round wire combine concaves for our innovative bar-and-grate style modular MAD Concaves™ results in more efficient threshing, getting your grain out of the head and into the hopper quicker for decreased rotor loss and less dockage. This means higher quality crops and more money in your pocket.

Our fast and easy-to-change modular designs allow you to quickly swap out inserts in minutes, making it way easier to customize your concaves to your crop for the best results possible. Plus, you’ll save valuable time, which is critical in a busy harvest season. 


Available for S and STS Series combines.

The numbers .225, .300, and .375 represent the measurement of the gap between the bar; the gap being .225 of an inch for example.


 


Additional Information & Tips

        • In tough canola conditions, you may need to put a .375 in the first position & finger grate in the second position.
        • In high-yielding canola, you may need to replace a .375 with a .435.
        • If harvesting multiple crops but not harvesting corn, Finger Grates in position 1 and .375 in position 2 is an option for soybeans in certain conditions.





    MAD Concaves Configuration & Combine Settings Guide for John Deere STS & S Series

    *Recommendations may change by crop conditions and climate

     

    Crop Rotor Fan Concave Top Sieve Bottom Sieve 1st Position Concave 2nd Position Concave 3rd Position Concave
    Wheat 1000 1050 5 18 7 .225 .375 One Piece .437
    Barley/Oats 800 1020 15 18 10 .375/Finger .375/Finger One Piece .437
    Soybeans 490-510 1040 19 17 7 O-Grate O-Grate One Piece O-Grate
    Canola 500/600 850 15 15 4-5 .375/Finger .375/Finger* One Piece .437
    Flax 1000 750 0 6 6 .225 .375 One Piece .437
    Peas 450 1050 15 18 11 Finger Grates Slot/.375 One Piece .437
    Milo 620 990 9 21 10 O-Grate O-Grate One Piece O-Grate
    Corn 270 1200 31 25 15 O-Grate O-Grate One Piece O-Grate