Why am I throwing grain out the back?
Rotor loss is bushels hitting the dirt instead of the bin. It usually comes down to threshing and feeding, and both are fixable. Find out how much you’re losing, then stop it.
Sound familiar?
- Grain scattered on the ground behind the combine
- Losing yield but no idea how many bushels
- Machine overloading, plugging, or bogging down in tough crop
- Rotor working harder than it should for clean separation
Recommended products
See where the bushels are going
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The ScherGain drop pan paid for itself today setting up the cx8. 90 5 bu/ac losses on ACS got it down to ⅔ bu/ac by changing settings.
Not sure where your loss is coming from?
We’ll help you sort out whether it’s your concaves, your feeding, or your settings, and what to fix first.
Common Questions
Why is my combine losing grain out the back?
Usually the rotor is overloaded or threshing unevenly, so grain stays trapped in the straw. Better threshing up front and steadier feeding keep more grain in the machine.
How do I measure combine grain loss?
Use a drop pan. It catches what's actually coming through, so you get a real bushel-per-acre number instead of eyeballing the ground.
Will new concaves reduce rotor loss?
Concaves that thresh more grain free early and reduce overload leave less grain in the straw, which is where most rotor loss comes from.