A mobile mining machine, in particular for driving tunnels, roadways or shafts in hard rock and the like, comprising: a movable machine base frame; at least one tool drum (50; 150; 250) rotatable about a drum axis and having stripping tools (54; 154; 254) arranged on the circumference of the tool drum (50; 150; 250); a rotary drive (35; 135; 235) for the at least one tool drum (50; 150; 250); a boom device (20; 120; 220) on which the at least one tool drum (50; 150; 250) is rotatably mounted; a swinging device for swinging the boom device (20; 120; 220) in relation to the machine base frame; and a tilting device for tilting the boom device (20; 120; 220), the boom device (20; 120; 220) having a supporting arm (22; 122; 222), on which the tool drum (50; 150; 250) is mounted, and a separate swinging base (21; 121) swingable about a swing axis extending perpendicularly to the machine base frame by means of the swinging device, the supporting arm (22; 122; 222) and the swinging base (21; 121) being connected to one another by means of a system of guide bars (23; 123; 223), by way of which the setting angle of the drum axis in relation to the swing axis is adjustable; characterized in that the system of guide bars (23; 123; 223) forms a four-bar linkage, preferably a trapezoidal four-bar linkage, and has a first guide-bar bracket (27; 127; 227) on the supporting arm side and a second guide-bar bracket (31; 131; 231) on the swinging base side, the guide-bar brackets (27, 31; 127, 131; 227; 231) being movable in relation to one another by means of two actuating drives (36, 37; 136, 137; 236) in a crosswise arrangement, a first actuating drive of the two actuating drives (36, 37) being disposed above the rotary drive and a second actuating drive being disposed below the rotary drive; the system of guide bars (23; 123; 223) including two guide-bar arms (29A, 29B; 129A, 129B; 229A, 229B), which are mounted with their one guide-bar end on the first guide-bar bracket (27; 127; 227) and with their other guide-bar end on the second guide-bar bracket (31; 131; 231) rotatably about guide-bar axes. a movable machine base frame; at least one tool drum (50; 150; 250) rotatable about a drum axis and having stripping tools (54; 154; 254) arranged on the circumference of the tool drum (50; 150; 250); a rotary drive (35; 135; 235) for the at least one tool drum (50; 150; 250); a boom device (20; 120; 220) on which the at least one tool drum (50; 150; 250) is rotatably mounted; a swinging device for swinging the boom device (20; 120; 220) in relation to the machine base frame; and a tilting device for tilting the boom device (20; 120; 220), the boom device (20; 120; 220) having a supporting arm (22; 122; 222), on which the tool drum (50; 150; 250) is mounted, and a separate swinging base (21; 121) swingable about a swing axis extending perpendicularly to the machine base frame by means of the swinging device, the supporting arm (22; 122; 222) and the swinging base (21; 121) being connected to one another by means of a system of guide bars (23; 123; 223), by way of which the setting angle of the drum axis in relation to the swing axis is adjustable; characterized in that the system of guide bars (23; 123; 223) forms a four-bar linkage, preferably a trapezoidal four-bar linkage, and has a first guide-bar bracket (27; 127; 227) on the supporting arm side and a second guide-bar bracket (31; 131; 231) on the swinging base side, the guide-bar brackets (27, 31; 127, 131; 227; 231) being movable in relation to one another by means of two actuating drives (36, 37; 136, 137; 236) in a crosswise arrangement, a first actuating drive of the two actuating drives (36, 37) being disposed above the rotary drive and a second actuating drive being disposed below the rotary drive; the system of guide bars (23; 123; 223) including two guide-bar arms (29A, 29B; 129A, 129B; 229A, 229B), which are mounted with their one guide-bar end on the first guide-bar bracket (27; 127; 227) and with their other guide-bar end on the second guide-bar bracket (31; 131; 231) rotatably about guide-bar axes.