SD8N bulldozer is track-type dozer with elevated sprocket, hydraulic direct drive, semi-rigid suspended and hydraulic controls. Equipped with power separating hydraulic-mechanic type Torque converter, planetary, power shift and one lever control transmission. SD8N bulldozer equipped with Pilot hydraulic control system; Its new structure of modular assembling and disassembling; with handy, accurate operating system, electric monitoring, SD8N bulldozer can be equipped with many optional equipment and attachment, it can be used in road building, hydro-electric construction, land clearance, port and mine development and other construction field.