The front section, through which the crop is pulled inside the harvester, is the combine header. Each combine harvester has a removable head, the design of which varies for specific crops. The header is of different types.

1. Grain platform: The regular header has the reciprocating knife cutter bar with a revolving wheel that has plastic or metal teeth, which lets the cut crop drop into the auger.
   
2. Flex platform: This combine header uses a cutter bar that flexes over contours or ridges. This cuts c...