dozer D7
WD220Y bulldozer is manufactured base on the technology of D85A-18 and D85A-23 Japan. It passed the examination of the experts group of shanghai economy committee. Its layout is well designed, its appearance is nice and modern, it has a high working performance and is reliable in safety. The machine has used in civil industry widely including large mine ground, port, electricity, road building.


Specifications:
Engine |
Model |
NT855-C280S10 |
Type |
Straight vertical, 4 stroke, water cooling, PT pump injection, turbocharged |
Flywheel power |
162 kw |
Rated speed |
1800 rpm |
No. of cylinder-bore x stroke |
6-139.7x152.4 mm |
Starting method |
Starting motor, 24V, 11kw |
Battery |
24V(12Vx2)-195AH |
Air cleaner |
Dry horizontal type with precleaner |
Min fuel consumption ratio |
218 g/kw.h |
Transmission system |
Torque converter |
3 element, single stage, single phase |
Transmission |
Hydraulic shift, planetary gear, multiple disc clutch, forced lubrication by gear pump, 3 forward and 3 reverse speeds |
Bevel gear |
Helical bevel gear, splash lubricated |
Steering clutch |
Wet type, multiple disc, spring loaded, hydraulic released |
Steering brake |
Wet band brake, operated with hydraulic booster and valve inner linkage |
Final drive |
Spur gear, double reduction, splash lubricated |
Working hydraulic system |
Working pressure |
13.7 Mpa |
Rated flow |
257 L/min (2000rpm) |
Pump |
CBT3160 gear pump |
Control valve |
Hand-operated, plunger, servo controlling |
Cylinder bore x rod x stroke |
120x70x1054 mm |