Bulldozer->Crawler Tractor

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Xuanhua Construction Machinery Co., Ltd

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Bulldozer

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Machinery on-line->Construction Machinery->Crawler Tractor

Product Specification

Model No:	SD7(220HP)

Country	CN
Brand	HBXG
Materials	steel
Size	760438233402 millimeters
Weight	23800kg
Color	yellow
Packing	machine in nude and spare parts in cases
Payment Term	T/T or L/C

Product Detail

MAIN SPECIFICATIONS
Operating weight(not including ripper): 23800kg; Ripper weight: 3900kg
Engine flywheel power: 162kw; Ground pressure(without ripper): 71.9kPa
Ground clearance: 404mm; Track center distance: 1980mm
Overall dimensions(L*W*H): (with single shank ripper and straight tilting blade) 7604*3823*3402mm
Dozing operation rate(moving distance 40m) 350m3/h
DIESEL ENGINE SPECIFICATIONS
Model: NT855-C280 (Cummins)
Type: Water cooled, single line, vertical, four strokes, turbocharged, 6-cylinders, diameter 140mm
Rated speed: 2100 RPM Flywheel power(speed at 2100 rpm): 162 kW
TORQUE CONVERTOR
Torque converter is power separating hydraulic-mechanic type.

TRANSMISSION
It integrates center drive, transmission and speed changing control valve into one component. It can be assembled or disassembled as a assembly or as a part. It is very convenient to service. Transmission is multi-stage planetary gear drive to realize modular assembling and disassembling. 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 clutch 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. The action of steering and braking is combined, operation manually to realize steering slowly, sharply and braking. The braking of entire machine can be realized through the pedal. Parking braking rod is designed to keep the undercarriage system in braking condition when starting the engine 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.

HYDRAULIC SYSTEM
It is composed of oil pump, transmission control valve, steering and braking control valve, sequence valve, relief valve at torque convertor outlet, filter and lines.

Main pump: Gear pump; Oil flow: 160L/min; Working pressure: 3.1MPa
IMPLEMENT OF THE HYDRAULIC SYSTEM
Implement hydraulic system can control lifting, lowing and tilting of the blade. It also can control lifting, lowing of the ripper. It mainly consists of oil pump, cylinder, inlet valve group diverter valve group, oil tank line and controlling parts.
Main pump: High pressure gear pump
Oil flow: 194L/min; System working pressure: 18.6MPa
Left and right UNDERCARRIAGE SYSTEM
The track is triangle shape. The sprocket is elevated. There are two idlers in front and at rear of the frame and seven track roller. Recoil spring and cylinder adjuster is mounted at the undercarriage. The rear end of undercarriage frame is supported on the pivot. The front end is articulated with the equalizer bar. Choosing different undercarriage system according to different implement. The customer is required can guarantee center gravity of the machine to be at best efficient position. Choosing different width of track shoe can ensure the bulldozer developing its optimum traction efficiency.

MAINTENANCE
Fuel tank: 450L Water tank of cooling system: 118L
Camshaft box of the engine: 20L Bevel gear case: 150L
Implement oil tank: 100L; Pivot lubricating tank: 15L
Final drive: 15L
OPTIONAL PARTS
1)cab: A. Rops with air conditioner cab
B. Rops cab C. Rops canopy
2)Front mounted implement
A. Straight tilting blade
B. Angle blade C. U-type blade
3)Rear mounted implement
A. Single shank ripper B. Three shanks ripper
C. Back drawing mechanism
4)Track shoe of undercarriage
Optional track shoe width
A. 510mm B. 560mm
C. 660mm D. 914mm

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