A device for grinding coffee beans (12) includes a grinding member (14) configured to grind coffee beans (12) and produce a ground coffee powder (15). A transit chamber (16) receives the ground coffee powder (15). A discharge member (18) is configured to discharge the ground coffee powder (15) arriving from the transit chamber (16) toward the outside of the device. An air-powered powder removal member (20) removes the ground coffee powder (15) from the grinding member (14) and from the transit chamber (16).
