Product Name: China 230HP Mini Swamp Crawler Bulldozer on Hot Sale (SD7N) Model NO.: SD7N Color: Yellow Condition: New Certification: CE, ISO9001: 2000 Engine Power: 147~515kw Load and Unload Method: Front Discharge Walking Mode: Crawler Transmission: Hydraulic - Mechanical Transmission Type: Universal Type Engine Model: Cummins Nta855-C280s10 Fule Consumption: 235g/Kw.H Operating Weight(Not Including Ripper): 23800 Kg Blade Width: 3500mm Dozing Capacity: 8.4m3 Overall Dimensions(Lxwxh): 7604X3823X3402mm Number of Track Roller: 14PCS ( Total, Each 7PCS) Pitch: 216mm Wide of Shoes: 55mm Gear: 3f/3r Trademark: HBXG Transport Package: Nude Specification: CE, SGS, Ghost, ISO 9001 Origin: Heibei, China HS Code: 84291190 Product Description SD7N bulldozer is 230 horsepower track-type dozer with elevated sprocket, power shift drive, semi-rigid suspended and hydraulic controls.SD7N-230 horsepower, elevated sprocket bulldozer integrate with modular design is easy to repair & maintenance, It relieves oil with difference pressure, the hydraulic system performs protecting environment and save energy with high working efficiency. Safety comfortable operation condition, electric monitoring and ROPS cabin with reliable entire quality, excellent service is your wise choosing.It can be equipped with straight tilting blade, angle blade, coal pushing blade, U shape blade; single shank ripper, three shanks ripper; ROPS, FOPS, forest defence cabin etc.. It is can ideal machine used in communication, oil field, power, mining etc. large earth moving program.Technical ParametersOperating weight(not including ripper)23800Ripper weight3900Engine flywheel power162kwGround pressure(without ripper)71.9kPaGround clearance404mmGround contact length2890mmTrack center distance1980mmOverall dimensions(L×W×H) (with single shank ripper)7604×3823×3402(with straight tilting blade)Grade abilityLatitude30 ° Transverse 25°Theory travel speed (km/h)1st gear forward 0-3.91st gear backward 0-4.82nd gear forward 0-6.52nd gear backward 0-8.23rd gear forward 0-10.93rd gear backward 0-13.2Dozing operation rate(moving distance 40m)350m3/hDiesel EngineModelNT855-C280 (Cummins) or C6121ZLG10 (Licensed CAT 3306 diesel engine)Typewater cooled, single line, vertical, four strokes, turbocharged, 6-cylinders, diameter 140mm or 121mm.Rated speed2100 RPMFlywheel power169 kWStart mode24V electric startingTorque 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, 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 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 converter outlet, filter and lines.Main pumpGear pumpOil flow160L/minWorking pressure3.1MPaRops 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.Implement hydraulic systemImplement 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 pumpHigh pressure gear pumpOil flow194L/minSystem working pressure18.6MPaLeft and right undercarriage systemThe 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 capacityFuel tank450LWater tank of cooling system118LCamshaft box of the engine20LBevel gear case150LImplement oil tank100LPivot lubricating tank15LFinal drive15L
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