Main specifications
Operating weight(not including ripper)			40000
Ripper weight			4300
Engine flywheel power/RPM			246 kw(335HP)/1900r/min
Track ground contact length			3280 mm
Ground pressure(without ripper)			105 kPa
Track contact length			2200 mm
Overall dimensions(L×W×H)			8090×4172×3952mm (with single shank ripper)
Gradeability			Latitude 30 ° Transverse 25°
Ground clearance			485mm
Theory travel speed (km/h)
Forward			Reverse
First speed	0-3.9		First speed		0-4.8
Second speed	0-6.8		Second speed		0-8.4
Third speed	0-11.9		Third speed		0-14.8
Dozing operating rate (moving distance 40m)			452 m3/h
Diesel Engine
Model			NTA855-C400 (BC)
Type			water cooled, single line, four strokes, turbocharged, 6-cylinders, diameter 140mm
Rated speed			1900r/min
Flywheel power			246kw(335HP)
Torque storage coefficient			24.5%
Start mode			24v electric starting
Torque converter
Power separating, hydraulic-mechanic drive, single stage torque converter is used in SD8 elevale 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
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
SD8 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.
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.
Front pump		Displacement		129ml/r
		Rated pressure		21MPa
		Rated speed		2000r/min
Rear pump		Displacement		56ml/r
		Rated pressure		21MPa
		Rated speed		2000r/min
Rated operation pressure of blade lifting system			17.5MPa
Rated operation pressure of tilting system			18.3MPa
Hydraulic system of tractor
It is composed of oil pump, transmission control valve, steering and braking control valve, sequence valve, torque converter outlet relief valve, filler and oil line, etc. Main pump is three group gear pump.
Lubricating pump		Displacement		90 ml/r
		Rated pressure		0.4 MPa
		Rated speed		2000 r/min
Working pump		Displacement		115 ml/r
		Rated pressure		3.1 MPa
		Rated speed		2000 r/min
Oil draining pump		Displacement		160 m/r
		Rated pressure		0.5 MPa
		Rated speed		2000 r/min
Cab
Type			Simple structure canopy
Alternative			Cab with air-conditioner
			Cab with Rops