The central
box of the verticals disks unit is prolonged to obtain greater strength to the
effort and have bronze bearing antifriction with a butting end on the central
supports. In the MSD 180 P the frame is a new project in the anterior side
(verticals disks side)/ in the locating of the anterior wheels, in the anterior
wheels themselves and bearing to obtain a greater perfection in the measure of
the blocks and to maintain the quarry level. The chains of transmission are
twin.
