SD5K is a new type of fully hydraulic bulldozer, which adopts a dual-circuit electronically controlled hydrostatic drive system, an electronically controlled closed-center load sensing device hydraulic system, a PAT power angle shovel, and an automatically controlled independent cooling system. The whole machine has full power matching, flexible operation, low fuel consumption, continuously variable speed change, power and in-situ steering functions, electric proportional control of walking and working equipment for precise and comfortable operation, human-machine interactive instrument display, intelligent service system, and fully sealed air-conditioned cab. , modular design, easy maintenance. SD5K is an ideal machine for fine or heavy-duty operations such as excavation, backfilling, shaping, and leveling of earthwork materials in ports, transportation, stadiums, electric power, and urban areas.