SD8B is elevated sprocket, track-type bulldozer. Its undercarriage system is elastic suspended, elevated sprocket, hydraulic direct drive, and hydraulic controls. SD8B dozer can be equipped with S-blade, single shank ripper. Main structure uses high strength plate and is suitable for working in stony, worse earth condition. The cab is installed Rops device and comfortable seat. Main specifitions Operating weight( including ripper): 37400kg Engine flywheel power/RPM: 235 kw(320HP)/2100r/min Ground pressure(with ripper: 93 kPa Overall dimensions(L× W× H): 7751× 3940× 3549(with single shank ripper) Gradeability: latitude30 ° Transverse 25° Ground clearance: 556mm Theory travel speed (km/h) 1st gear forward 0-3.5 1st gear backward 0-4.7 2ND gear forward 0-6.2 2ND gear backward 0-8.1 3rd gear forward 0-10.8 3rd gear backward 0-13.9 Diesel engine specifications Model: NTA855-C360S10 Type: Water cooled, single line, four strokes, turbocharged, 6-cylinders, diameter 140mm Rated speed: 2100r/min Flywheel power: 235kw(320HP) Torque storage coefficient: 20% Start mode: 24V electric starting Torque converter Power separating, hydraulic-mechanic drive, single stage torque converter is used in SD8B elevated sprocket bulldozer. Transmission assembly It integrates center drive, transmission and speed changing control valve into one component. It can be assembled or disassembled as assembly or as a part. It is very convenient to service. Transmission is multi-stage planetary drive to realize modular assembling and disassembling. Gear the shift can be changed among 1st gear, 2ND gear, 3rd gear forward or reverse rapidly, through multi-functional control valve. Steering and braking clutch Steering and braking clutch are adjustment-free, oil-type, multi-disc clutch. The braking clutch is pressed by spring, separated hydraulicly, constant meshed type. Steering clutch is hydraulic pressed, non-constant engaged clutch. Steering and braking acts simultaneously, operated manually to realize steering slowly, sharply and braking. The braking of entire machine can be realized through the pedal. Braking rod is designed to keep the undercarriage system in braking condition and guarantee the machine not to slip on slope when starting the engine. Final drive Final drive is two-stage planetary reduction gear mechanism. It is mounted at outside of steering and braking clutch. Combined sprocket segment is very convenient for assembling, disassembling and service. Undercarriage system SD8B dozer utilizes elastic-mounted undercarriage. The track is triangle shape. The sprocket is elevated. Through floating function of continuous auxiliary suspension device, the machine can travel near obstacle on the ground to improve travelling stability and comfortable of the driver. Ground contact area is increased. Performance of travelling and traction is raised. R. O. P. S cab The cab is hexagonal thin wall box-type structure. Glass is mounted at six sides with wide viewing range. Pulling and pushing glass is mounted at back side. Air conditioner can be installed according to the requirement of customer. The structure of Rops is rigid. It can protect the driver efficiently when the bulldozer is in special condition. Adjustable operator's seat bias to right 15° And fuel tank, engine hood, track are tilting, the driver can has a good front and rear sighting range. Implement hydraulic system Implement hydraulic system can control lifting, lowering and tilting of the blade. It also can control the moving of ripper. It mainly consists of oil pump, cylinder, valve group, oil tank line and controlling parts. Implement pump is two group vane type pump.
