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 specifications:
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)
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
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 hydraulic, 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.
| Specification |
| Dozer |
|
Tilt |
|
| Operation weight |
kg |
36800 |
with ridge buster |
| Ground pressure |
kpa |
93 |
|
| Track gauge |
mm |
2083 |
|
| Min. Ground clearance |
mm |
556 |
|
| Gradient |
º |
30/25 |
|
| Dozing capacity |
m3 |
11.24 |
|
| Blade width |
mm |
3940 |
|
| Max.digging depth |
mm |
582 |
|
| Overall dimensions |
mm |
7751X3940X3549 |
|
| Engine |
| Type |
|
CUMMINS NTA855-C360S10 |
| Rated revolution |
rpm |
2100 |
| Reted power |
KW |
235 |
| Torque storage coefficient |
N.m/rpm |
20% |
| Undercarriage system |
| Type |
|
The track is triangle shape. The sprocket is elevated. |
| Number of track rollers (each side) |
|
8 |
| Pitch |
mm |
216 |
| Width of shoe |
mm |
560 |
| Gear |
|
1st |
2nd |
3rd |
| Forward |
km/h |
0-3.5 |
0-6.2 |
0-10.8 |
| Back ward |
km/h |
0-4.7 |
0-8.1 |
0-13.9 |
| Implement hydraulic system |
| Max. system pressure |
Mpa |
20 |
| Pump type |
|
high pressure gears pump |
| System output |
L/min |
220 |
| Driving system |
| Toque converter |
Torque converter is power separating hydraulic-mechanic type. |
| Transmission |
Planetary, power shift transmission with three speeds forward and three speeds reverse. Speed and direction can be quickly shifted. |
| Steering clutch |
The steering clutch is hydraulic pressed, non-constant engaged clutch. |
| Steering brake |
The braking clutch is hydraulic pressed by spring, separated hydraulic, constant meshed type. |
| Final drive |
The final drive is two-stage planetary reduction gear mechanism, splash lubrication. |
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