Why Choose Bushel Plus MAD Concaves?

Groundbreaking concave designs that offer an unbeatable option for farmers looking to reduce rotor loss and supercharge their harvest efficiency.

More grain for less pain! Swapping out traditional round wire combine concaves for innovative bar-and-grate style modular MAD Concaves™ results in more efficient threshing, for decreased rotor loss and less dockage. This means higher quality crops and more money in your pocket.

  • Kassie and grower in paddock discussing harvester set up
  • JD Concave Split Frame
  • NZ FARCase 9250
concave for hard thresh crops

.225 Concave

  • Hard to thresh crops
  • Wheat, flax, frosted crop
  • First Position

.300 Concave

  • Allows more seed out of the concave, reducing rotor loss
  • Easy to thresh cereals
  • First Position

.375 Concave

  • All crops
  • Mostly used in second position but used in front position for large cereal crops that need some threshing.

.435 Concave

  • Ideal for very easy thresh crops like hemp
  • Large seed crops, chickpeas and faba beans
  • First and Second Position

(Lucerne) Alfalfa Concave

  • Ideal for small seeds
  • Lucerne, Clover

Slotted Concave

  • No threshing, full separation
  • No cracking
  • Edible beans, sunflower
  • First Postion

Round Bar Concave

  • Full Separation
  • Available for JD S/STS Series only

Finger Grate Concave

  • Minimal threshing
  • Peas, barley, oats, sunflower and shatter resistant canola
  • First Position

O Grate Concave

  • Improve Sample Quality
  • Soybeans, corn, milo
Click here to kits to suit your crops and conditions