The driving unit is either a 3 h.p. or 4a#39;/1 h.p. air cooled petrol engine with inbuilt clutch, and for electric drive either a 3 ... Belt tensioning gear is fitted to the head section, the tension brackets being provided with self-aligning ball bearings in ... The elevating unit consists of a channel iron frame in which is mounted a single ram hydraulic jack of 5 tons operating load. ... Control is initiated at the flow diagram board, pushbuttons, control switches, etc., being built into the amimica flow lines.