Editing Combine harvester (section)

== Combine size classification ==
{{Unreferenced section|date=April 2024}}
While all combines aim to achieve the same result, each machine can be classified based on its general throughput based on the rated [[horsepower]] of the combine. Current combine classifications, as defined by Association of Equipment Manufacturers (AEM), are as follows (metric horsepower, which is approximately 735.5 watts, is used):

* Class 5 - less than 280 HP
* Class 6 - 280 HP - 360 HP
* Class 7 - 360 HP - 500 HP
* Class 8 - 500 HP - 600 HP
* Class 9 - 600 HP - 680 HP
* Class 10 - more than 680 HP

While this classification is current, the classes themselves have evolved over time. For instance, a class 7 combine in the year 1980 would have had 270 horsepower and been one of the largest machines available in the world at that time, but in the 21st century the same machine would be considered small. The Association of Equipment Manufacturers recognizes Class 10, which came into being in 2013, as the largest combine class. However, there are combines with horsepower and threshing capacity that could argue for creating a new class.