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SD8B Bulldozer (320hp)

SD8B Bulldozer (320hp)

SD8B Bulldozer (320hp) adopts CAT tech, with CUMMINS engine, Triangle track. and single shank ripper as optional.

Main specifications
Operating weight( including ripper)   37400kg
Ripper weight  430kg
Engine flywheel power/RPM   235 kw(320HP)
Track ground contact length 3252 mm
Ground pressure(without ripper) 93 kPa
Track Gauge  2083 mm
Overall dimensions(L×W×H)  7751×3940×3549(with single shank ripper)
Grade ability 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
Dozing operating rate (moving distance 40m)      452m3/h
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  24.5%
Start mode 24v electric starting
Torque converter
Torque converter is power separating hydraulic-mechanic type
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 hydraulically, 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 traveling stability and comfortable of the driver. Ground contact area is increased. Performance of traveling and traction is raised.
ROPS cabin
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.
Blade
Type s-blade 
Height 1690mm 
Width  3940 mm
Ripper
Type  single, adjustable hydraulic ripper
Rippering angle 45°
Max. penetration 1150mm
Max. lifting height  830mm
Dimension (Straight tilting blade(s-blade) (with ripper))  
Ground contact length 3280mm
Blade height 1690
Blade width 3940
Track center distance 2083
Penetrating length 614
Lifting height 1288

Description:
The bulldozer, also called dozer, is a piece of earthmoving equipment widely used in the construction site. There is a front-mounted dozer blade used to push solid forward to make formed land. The bulldozer is widely used for road construction, water and electricity engineering, farmland leveling, port building, mining and other construction conditions. We can offer all kind of bulldozer from 80HP to 420HP by introducing Komatsu and Caterpillar technology.
The main subassembly of a bulldozer includes: tracked chassis, protective driver cage, rear-mounted ripper claw and a variety of front-mounted blades. Bulldozer blade and the ripper are the primary tools of bulldozers or dozers. There are straight blade (S-blade), universal blade (U-blade), U combination blade that can be used in the dozer to push piles of large rocks. The ripper is equipped with a replaceable tungsten steel alloy tip that can be installed on the back of the bulldozer (dozer). It can let the large rocks broken into small rubble for easy handling and transport

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