The invention relates to a pneumatic rockdrill (99) comprising: a housing, including an air supply inlet for receiving compressed air, and a cylinder (50), connected to the air supply inlet by a set of air passages; an impact piston (14), at least part of which is reciprocable within the cylinder (50); and air-flow control means for controlling the supply of compressed air from the air supply inlet to the cylinder (50); the rockdrill (99) including at least one pair of corresponding contact surfaces at which relatively-moving parts contact one another; and the rockdrill being characterized by including at least one water supply inlet and water paths connected to the water supply inlet(s) and configured so as in operation to convey water to a drilling tool so as to flush a hole being drilled and to supply water to wet the aforesaid contact surfaces.