A non-sterile motorized base unit intended to be used with a disposable cutting cartridge to create particles of bone autografts (i.e., bone harvested from and transplanted into the same patient) for implantation during a bone regeneration or bone grafting procedure. The motor is intended to provide the rotational force required by the cutters in the cartridge to produce the bone particles; it is typically powered by a line-powered surgical power tool control unit. This is a reusable device.