A leveling apparatus for excavator and forestry machine equipment is provided. The leveling apparatus is mounted between an upper swing structure (1) and a lower frame (3) formed on a lower driving structure (10) including a swing bearing (9), left and right track chassis (4a,4b), and a front arm (3a) and a rear arm (3b) connected to upper parts of the track chassis, to keep a horizontal level of the upper swing structure against an inclined ground. The leveling apparatus includes a swing bearing mounting plate (20) mounted on a lower part of the swing bearing (9) and including a pair of pivot support parts (24) and a pair of second piston holders (25) a support plate (40) fixedly installed on an upper part of the lower frame (3) and having a pair of pivot support parts a tilt plate (30) mounted between the swing bearing mounting plate (20) and the support plate (40) to be tilted, and including a pair of first pivot holders (34), a pair of second pivot holders (39), a first shaft (13) and a second shaft (14) and a pair of first actuators (11a,11b) and a pair of second actuators (12a,12b) wherein the tilt plate (30) includes a vertical centre line (C) crossing a centre line (T) in a length direction of the lower frame (3), and the respective actuators are installed to be radially apart from the vertical centre line (C).
