The D155AX is one Komatsu's larger dozers, weighing about 34 t (75,000 lb) and being powered by a 310 hp motor. The AX series stands out for their futuristic and angular design.

This Joal model comes with an open ROPS canopy. When being introduced to the market, it was also one of the first models (aside from some rather old Conrad models) that featured real metal tracks inspite of the usual rubber belts.