The braking elements comprise at least an elastic washer for providing axially prestressed mutual contact of {HEAD ~ the friction surfaces} of {TAIL ~ the discs} 
The braking elements comprise at least an elastic washer for providing axially prestressed mutual contact of { HEAD ~ the friction surfaces } of { TAIL ~ the discs }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL