Hbxg 230HP High Track Bulldozer-SD7

Model NO.: SD7 Trademark: SUNY Origin: China Operating Weight: 25500kg Specification: ISO HS Code: 84291190
SD7 bulldozer is 230 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.
SD7-230 horsepower, elevated sprocket bulldozer integrate modern science into it, its new structure, good performance, high working efficiency, safety and comfortable operation condition, realizable entire quality, excellent service is your wise choosing.

Main specifications

Operating weight(not including ripper)	23800
Ripper weight	3900
Engine flywheel power	162 k W
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) :	7604 × 3823 × 3402
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 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)	169 kW
Starting mode	24V electric starting

Torque converter
Torque converter used in SD7 bulldozer 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 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 of the machine
It is composed of oil pump, transmission control valve, steering and braking control valve, sequence valve, relief valve at torque converter outlet, filter and lines.
Main pump              Gear pump
Oil flow                   160 L/min
Working pressure        3.1 MPa
Rops with air conditioner cab
The 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.
Implement 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                              194 L/min
System working pressure        18.6 MPa

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.
Optional implement and components    ( * ordinary)

cab	Rops with air conditioner cab   *
	Rops cab
	Rops canopy
Front mounted implement	straight tilting blade       *
	Angle blade
	U-type blade
Rear mounted implement	single shank ripper        *
	three shanks ripper
	back drawing mechanism
Track shoe of undercarriage Optional track shoe width	510mm
	560mm
	660mm
	914mm

5) winch dozer used in forest, desert dozer, LGP dozer ,HW dozer can be chosen according to special requirements of customer.

Blade type	Track ground contact length(A)	Length of machine (B)	Blade height (C)	Overall height (D)	Blade width (E)	Track center distance(F)	Digging depth	Lifting height	Blade capacity
Straight tilting blade	2895	7604	1280	3402	3823	1980	500	1170	6.3
Coal pushing blade	2895	7880	1350	3402	4428	1980	670	1115	8.1
Angle blade	2895	7571	1100	3402	4253	1980	670	1115	5.2
LGP blade	3185	7190	1150	3482	4382	2235	635

 

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