Earthmoving Machinery SD8 |Earthmoving Machinery Bulldozer

BULLDOZER SD8

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 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(not including ripper) --------------------------------------------------------------------------------  4000
Ripperweight----------------------------------------------------------------------------------------------------------------.4300
Track ground contact length ---------------------------------------------------------------------------------------------3280mm
Ground pressure(without ripper) -----------------------------------------------------------------------------------------105 kPa
Track contact length------------------------------------------------------------------------------------------------------2200 mm
Gradeability-------------------------------------------------------------------------------------latitude30    transverse 25
Ground clearance------------------------------------------------------------------------------------------------------------485mm

Overall dimensions(LWH) ------------------------------------------ 809041723952(with single shank ripper)
Diesel engine specifications
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

Theory travel speed  (km/h)      
1st gear forward 0-3.9              1st gear backward 0-4.8
2nd gear forward 0-6.8             2nd gear backward 0-8.4
3rd gear forward 0-11.9            3rd gear backward 0-14.8
Dozing operating rate (moving distance 40m )      452m 3 /h

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 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
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.
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. Adjustabl