Operating weight(not including ripper): 23800kg
Ripper weight: 3900kg
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 used in SWD7 bulldozer is power separating hydraulic-mechanic type.
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 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, 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 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(Implement)
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: 160L/min
Working pressure: 3.1MPa
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 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