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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 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) -----------------------------------------40000kg
Ripper weight -------------------------------------------------------------------------430kg
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) ---------8090×4172×3952(with single shank ripper)
Gradeability-------------------------------------------------latitude30 ° transverse 25°
Ground clearance----------------------------------------------------------------------- 485mm
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)---------------------------------452m3/h
Diesel engine specifications
Model ---------------------------------------------------------------- NTA855-C400 (BC III )
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
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. The main performance is as following:
Lubricating pump Rated displacement ----------------------------90 ml/r
Rated pressure-------------------------------0.4 MPa
Rated speed -----------------------------------2000 r/min
Working pump Rated displacement ----------------------------115 ml/r
Rated pressure ----------------------------------3.1 MPa
Rated speed---------------------------------------2000 r/min
Oil draining pump Rated displacement-------------------------------160 m/r
Rated pressure-------------------------------------0.5 MPa
Rated speed-----------------------------------------------------------------2000 r/min
BladeType Height Width Capacity
s-blade 1765mm 4172 mm 13.0 m3
SD8 Elevated Sprocket Crawler Bulldozer