Machine builder Palmieri has developed a new type of machine for an unusual tunnel project in Italy. Bosch Rexroth designed and delivered the hydraulic system for it. Slowly the saw descends, the chain begins to rotate around the guide bar and eats its way little by little through a metre-thick reinforced concrete block as though it were ordinary wood. This saw is by no means ordinary. It looks like a normal chainsaw with gigantic dimensions - eight metres long, with a chain that is half a metre long. It is standing in a production hall at the Italian Palmieri Group, a manufacturer of tunnel construction systems. Once the huge saw has gone through its trial by fire, it still needs to prove itself in the field.
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