{HEAD ~ A ram} descends due to its own weight and pressure of a rod side cylinder chamber of a hydraulic cylinder which vertically moves the ram is detected by {TAIL ~ an oil pressure detector} 
{ HEAD ~ A ram } descends due to its own weight and pressure of a rod side cylinder chamber of a hydraulic cylinder which vertically moves the ram is detected by { TAIL ~ an oil pressure detector }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL