Frohnauer Hammer WikipediaThe Frohnauer Hammer still has the original hammer mill technology from the second half of the 17th century The heart of this system is the three tilt hammers whose shafts are driven by an overshot water wheel The hammers themselves have a weight of 100 kg 200 kg and 250 kg 220 lb 440 lb and 550 lb respectively They can develop a hammer force of up to 12 tons Nowadays during