ETW,Bulldozer SWD7,China Bulldozer SWD7 Manufacture

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Bulldozer SWD7

Bulldozer SWD7

Bulldozer

Features of Bulldozer

1.SWD7-230 horsepower, elevated sprocket bulldozer;
2.As an heavy engineering vehicle (construction equipment);
3.With hydraulic direct drive, semi-rigid suspended and hydraulic controls;
4.Can be equipped with straight tilting blade, angle blade, coal pushing blade, single shank ripper, and three shanks ripper;
5.Cab: Rops with air conditioner
6.Delivers compact structure, improved performance, high working efficiency;
7.Safety and comfortable operation condition;
8.Reliable entire quality, excellent service.

Applications of Bulldozer
Bulldozer, which can be found on a variety of small scale and large construction sites, mines and quarries etc., is primarily used to push large quantities of soil, sand, rubble, etc.

Main Specifications
Operating weight(not including ripper)	23800㎏
Ripper weight	3900㎏
Engine flywheel power	169kw
Ground pressure(without ripper)	71.9kPa
Ground clearance	404mm
Ground contact length	2890mm
Track center distance	1980mm
Overall dimensions(L×W×H) (with single shank ripper)	7604×3823×3402(with straight tilting blade)
Grade ability	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)	350m³/h
Diesel Engine
Model	NT855-C280 (Cummins) or C6121ZLG10 (Licensed CAT 3306 diesel engine)
Type	water cooled, single line, vertical, four strokes, turbocharged, 6-cylinders, diameter 140mm or 121mm.
Rated speed	2100 RPM
Flywheel power	169 kW
Start mode	24V electric starting
Power Transmitting System
Torque converter of SWD7 bulldozer is power separating hydraulic-mechanic type.
It combines center drive, transmission and speed changing control valve into one component. It can be assembled or disassembled either as an assembly or as a part. 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 clutch and braking clutch are adjustment free, oil-type, and multi-disc clutch. The braking clutch is pressed by spring, separated hydraulic, constant meshed type. Steering clutch is hydraulic pressed, non-constant engaged clutch. The action of steering and braking is combined, operated manually to realize steering slowly, sharply and braking. The braking of entire machine can be performed through the pedal. Parking braking rod keeps the undercarriage system in braking condition when starting the engine and guarantees the machine not to slip on slope when starting the engine.
Final drive is two-stage planetary reduction gear mechanism, which is mounted at outside of steering and braking clutch. Combined sprocket segment is very convenient for assembling, disassembling and service.
Hydraulic System(Implement)
It consists 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	160L/min
Working pressure	3.1MPa
Implement hydraulic system can control lifting, lowing, tilting of the blade and 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 rollers. Recoil spring and cylinder adjuster are 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. It 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 Filling Capacity
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

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