This pulse generator converts the rotational speed of a shaft in the electrical system of a self-propelled forage harvester or combine into a digital signal for the machine's control unit. It is mounted in a fixed position near a rotating component, typically a shaft or gear, and uses a magnetic or inductive pickup to produce a voltage pulse each time a tooth or keyway passes. The control unit reads these pulses to calculate ground speed, rotor speed, or engine RPM, depending on the application. A failed generator causes erratic readings or a complete loss of the speed signal, which can trigger warning codes or limit machine functions. This original component matches the housing bore and mounting flange of the assembly it replaces, ensuring the air gap between the sensor face and the target wheel is correct without shimming.