Stationary shafts are mounted to {HEAD ~ the roller frame assembly} and rotationally support {TAIL ~ the idler wheel} and guide rollers 
Stationary shafts are mounted to { HEAD ~ the roller frame assembly } and rotationally support { TAIL ~ the idler wheel } and guide rollers
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH