Full-turn type working machine

A full-turn type working machine including a lower travelling body, and an upper rotary body swivellably mounted on said lower travelling body for rotation about a vertical axis and having a machine room, an operator's cabin, a fuel tank and a counterweight located within a circle of a predetermined rotational radium R defined by an outermost portion of said upper rotary body spaced from said vertical axis, wherein said working machine comprises:

• a door fitted in an opening of an exterior facing wall of said operator's cabin, said exterior facing wall having forward and rearward vertical edges, said forward edge intersecting said circle of predetermined rotational radium R;
• means for swingably mounting said door to said rearward edge for pivotal movement between a closed position substantially parallel with said exterior facing wall and a fully opened position through an angle greater than 180 degrees;
• and
• a chamfered wall portion extending between said rearward edge of said exterior facing wall and an edge of a rearwardly facing wall of said operator's cabin, said chamfered wall portion being located a sufficient distance inwardly of said circle of predetermined rotational radius R so as to permit said door to lie against said chamfered wall portion and remain within said circle of predetermined rotational radius R while in said fully opened position.