An absorbent-body manufacturing apparatus that has a driving source that drives a drum to rotate about a rotational shaft in synchronization with another apparatus based on a synchronization signal, the synchronization signal being repeatedly output taking a unit amount of motion of the other apparatus as a unit, the unit amount of motion corresponding to a production pitch, and that manufactures an absorbent body by supplying an absorbent-body material and depositing the absorbent-body material in a plurality of recess sections, the supplying being performed from a duct toward the plurality of recess sections, the plurality of recess sections being spaced at a predetermined arrangement pitch in a rotating direction on an outer circumferential face of the drum, the duct being disposed at a predetermined position in the rotating direction, the manufacturing apparatus comprising: a first-pitch positioning member for setting the arrangement pitch to a first pitch; a second-pitch positioning member for setting the arrangement pitch to a second pitch that is different from the first pitch; a first signal-generating section that repeatedly generates a first rotational-angle signal based on a rotation of the drum taking a rotational angle of the drum as a unit, the rotational angle of the drum corresponding to the first pitch; a second signal-generating section that repeatedly generates a second rotational-angle signal based on a rotation of the drum taking the rotational angle of the drum as a unit, the rotational angle of the drum corresponding to the second pitch; and a controller that controls rotational driving of the driving source, wherein in the case where the arrangement pitch is set to the first pitch, the controller controls rotational driving of the driving source based on the first rotational-angle signal and the synchronization signal, and in the case where the arrangement pitch is set to the second pitch, the controller controls rotational driving of the driving source based on the second rotational-angle signal and the synchronization signal. the supplying being performed from a duct toward the plurality of recess sections, the plurality of recess sections being spaced at a predetermined arrangement pitch in a rotating direction on an outer circumferential face of the drum, the duct being disposed at a predetermined position in the rotating direction, the manufacturing apparatus comprising: a first-pitch positioning member for setting the arrangement pitch to a first pitch; a second-pitch positioning member for setting the arrangement pitch to a second pitch that is different from the first pitch; a first signal-generating section that repeatedly generates a first rotational-angle signal based on a rotation of the drum taking a rotational angle of the drum as a unit, the rotational angle of the drum corresponding to the first pitch; a second signal-generating section that repeatedly generates a second rotational-angle signal based on a rotation of the drum taking the rotational angle of the drum as a unit, the rotational angle of the drum corresponding to the second pitch; and a controller that controls rotational driving of the driving source, wherein in the case where the arrangement pitch is set to the first pitch, the controller controls rotational driving of the driving source based on the first rotational-angle signal and the synchronization signal, and in the case where the arrangement pitch is set to the second pitch, the controller controls rotational driving of the driving source based on the second rotational-angle signal and the synchronization signal. a second-pitch positioning member for setting the arrangement pitch to a second pitch that is different from the first pitch; a first signal-generating section that repeatedly generates a first rotational-angle signal based on a rotation of the drum taking a rotational angle of the drum as a unit, the rotational angle of the drum corresponding to the first pitch; a second signal-generating section that repeatedly generates a second rotational-angle signal based on a rotation of the drum taking the rotational angle of the drum as a unit, the rotational angle of the drum corresponding to the second pitch; and a controller that controls rotational driving of the driving source, in the case where the arrangement pitch is set to the first pitch, the controller controls rotational driving of the driving source based on the first rotational-angle signal and the synchronization signal, and the controller controls rotational driving of the driving source based on the first rotational-angle signal and the synchronization signal, and in the case where the arrangement pitch is set to the second pitch, the controller controls rotational driving of the driving source based on the second rotational-angle signal and the synchronization signal. the controller controls rotational driving of the driving source based on the second rotational-angle signal and the synchronization signal.