The replaceable cutter shell 49 will be locked on rolling cutter shell 48 until {HEAD ~ replacement} is required at {TAIL ~ the end} of the cutting structures service life 
is required at
The replaceable cutter shell 49 will be locked on rolling cutter shell 48 until { HEAD ~ replacement } is required at { TAIL ~ the end } of the cutting structures service life
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH