Komatsu D575A - World's Biggest Bulldozer The Komatsu D575A is a 1,150 horsepower (860 kW) tractor crawler available as a bulldozer/ripper, the D575A-3, or as a dedicated bulldozer, the D575A-3 SD Super Dozer. Equipped with a standard blade, both versions are capable of moving 90 cubic yards (69 m3) of material per pass although the D575A-3 SD Super Dozer is capable of moving 125 cubic yards (96 m3) of material per pass if equipped with an optional blade.The D575A-3 can dig to a maximum depth of