Elevated Sprocket Crawler Bulldozer SD8 series-- 330HP, Power shift, hydraulically control. Cummins Engine(Made in Chongqing). Elevated Sprocket Crawler Bulldozer SD8 series--Main Feature--SD8 is elevated sprocket, track-type bulldozer. Its undercarriage system is elastic suspended, elevated sprocket, hydraulic direct drive, and hydraulic controls. SD8 dozer can be equipped with S-blade, single ...