In state of the art wide wheel grinding machines, the steel frames are connected to {TAIL ~ the cross arm} by welds or {HEAD ~ screw connections} 
In state of the art wide wheel grinding machines , the steel frames are connected to { TAIL ~ the cross arm } by welds or { HEAD ~ screw connections }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD