Fig 3 FSC420 hammer mill machine diagrammatic sketch 1. Lower body, 2 Sevier, 3, rotor, 4. Air fan 5.Upper body, 6. Feeding port, 7.Discharging outlet, 8. Cyclone . Hammer Mill Equipment Installation. This series of hammer mills require spacious work place with good ventilation, enough withdrawal room and reliable fire extinguishing equipment.