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Bulldozer 140,165,SD7,SD8
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Product Details
Brand Name: | NCM | Place of Origin: | China | Model Number: | SD8 |
Product Description
SD7 bulldozer are 220 horsepower track-type dozer with elevated sprocket, hydraulic direct drive, semi-rigid suspended and hydraulic controls. It can be equipped with straight tilting blade, angle blade, coal pushing blade, single shank ripper, three shanks ripper. The cab is Rops with air conditioner.
SD7-220 horsepower, elevated sprocket bulldozer integrate modern secience into it, its new structure, good performance, high working efficiency, safety and comfortable operation condition, realiable entire quality, excellent service is your wise choosing.
Main specificationsOperating weight(not including ripper) 23800
Ripper weight 3900
Engine flywheel power 162 k
Ground pressure(without ripper) 71.9 kPa
Ground clearance 404 mm
Ground contact length 2890 mm
Track center distance 1980 mm
Overall dimensions(L × W × H) (with single shank ripper) 7604 × 3823 × 3402(with straight tilting blade)
Gradeability Latitude30 ° Transverse 25 °
Theory travel speed (km/h)
1st gear forward 0-3.9 1st gear backward 0-4.8
2nd gear forward 0-6.5 2nd gear backward 0-8.2
3rd gear forward 0-10.9 3rd gear backward 0-13.2
Dozing operation rate(moving distance 40m ) 350m 3 /h
Diesel engine specificationsModel 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
Starting mode 24V electric starting
Torque converterTorque converter used in SD7 bulldozer is power separating hydraulic-mechanic type.
Transmission assemblyIt 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 clutchSteering 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 driveFinal 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 of the machineIt 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 160 L/min
Working pressure 3.1 MPa
Rops with air conditioner cabThe cab is hexagonal thin wall box-type structure. Glass is mounted at six sides with wide viewing area. Pulling and pushing glass is installed at back side. Air conditioner is top-mounted with functions of cooling and heating. The structure of Rop is rigid. It can protect the driver efficiently when the bulldozer is in special condition.
Contact Us
- EURO-ASIA INT'L MACHINERY GROUP LTD
- Contact nameJames Gao
- Phone0086-531-81670640
- AddressNo.29, Luoyuan St, Hanzhoung,Shaanxi
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