Bid on this 4MikroPulverizer in Size Reduction Equipt Hammer Mills 243 4" Mikro Pulverizer used 4" mikro pulverizer type: 1s1 serial: 65j1352 max. rpm: 9750 stainless steel construction includes screw feeder driven by a 5 hp motorused 4" mikro pulverizer type: 1s1 serial: 65j1352 max.