China SD8 High Elevated Sprocket Track Bulldozer  China SD8 Bulldozer is elevated sprocket, track-type bulldozer. Its undercarriage system is elastic suspended, elevated sprocket, hydraulic direct drive, and hydraulic controls. SD8 dozer can be equipped with S-blade, single shank ripper. Main structure uses high strength plate and is suitable for working in stony, worse earth condition. The cab is installed Rops device and comfortable seat. It is ideal for contraction machinery and equipment for mine, field and power plant site construction.  SD8 is elevated sprocket, track-type bulldozer. Its undercarriage system is elastic suspended, elevated sprocket, hydraulic direct drive, and hydraulic controls. SD8 dozer can be equipped with S-blade, single shank ripper. Main structure uses high strength plate and is suitable for working in stony, worse earth condition. The cab is installed Rops device and comfortable seat. Main specifitions Operating weight (not including ripper)      40000 ㎿/FONT> Ripper weight                          4300 ㎿/FONT> Engine flywheel power/RPM              246 kw(335HP)/1900r/min Track ground contact length               3280 mm Ground pressure (without ripper)           105 kPa Track contact length                     2200 mm Overall dimensions (L × W × H)                                   8090 × 4172 × 3952(with single shank ripper) Gradability           latitude30  °    transverse 25 ° Ground clearance                        485mm Theory travel speed  (km/h)       1st gear forward 0-3.9              1st gear backward 0-4.8 2nd gear forward 0-6.8             2nd gear backward 0-8.4 3rd gear forward 0-11.9            3rd gear backward 0-14.8 Dozing operating rate (moving distance 40m )      452m 3 /h Diesel engine specifications Model                     NTA855-C400 (BC ⅿ) Type                      water cooled, single line, four strokes, turbocharged, 6-cylinders, diameter 140mm Rated speed                1900r/min Flywheel power             246kw(335HP) Torque storage coefficient     24.5% Start mode                 24v electric starting Torque converter Power separating, hydraulic-mechanic drive, single stage torque converter is used in SD8 elevale sprocket bulldozer. Transmission assembly It integrates center drive, transmission and speed changing control valve into one component. It can be assembled or disassembled as assembly or as a part. It is very convenient to service. Transmission is multi-stage planetary drive to realize modular assembling and disassembling. Gear 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 and braking clutch are adjustment-free, oil-type, multi-disc clutch. The braking clutch is pressed by spring, separated hydraulicaly, constant meshed type. Steering clutch is hydraulic pressed, non-constant engaged clutch. Steering and braking acts simultaneously, operated manually to realize steering slowly, sharply and braking. The braking of entire machine can be realized through the pedal. Braking rod is designed to keep the undercarriage system in braking condition 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. Undercarriage system SD8 dozer utilizes elastic-mounted undercarriage. The track is triangle shape. The sprocket is elevated. Through floating function of continuous auxiliary suspension device, the machine can travel near obstacle on the ground to improve travelling stability and comfortable of the driver. Ground contact area is increased. Performance of traveling and traction is raised. R.o.p.s cab The cab is hexagonal thin wall box-type structure. Glass is mounted at six sides with wide viewing range. Pulling and pushing glass is mounted at back side. Air conditioner can be installed according to the requirement of customer. The structure of Rops is rigid. It can protect the driver efficiently when the bulldozer is in special condition. Adjustable operator �?s seat bias to right 15 ° and fuel tank, engine hood, track are tilting, the driver can has a good front and rear sighting range. Implement hydraulic system Implement hydraulic system can control lifting, lowering and tilting of the blade. It also can control the moving of ripper. It mainly consists of oil pump, cylinder, valve group, oil tank line and controlling parts. Implement pump is two group vane type pump. The main specification is as following: Front pump                   Displacement   129ml/r                             Rated pressure   21MPa                             Rated speed     2000r/min Rear pump                   Displacement    56ml/r                                              Rated pressure   21MPa                             Rated speed     2000r/min Rated operation pressure of blade lifting system    17.5MPa Rated operation pressure of tilting system         18.3MPa Hydraulic system of tractor It is composed of oil pump, transmission control valve, steering and braking control valve, sequence valve, torque converter outlet relief valve, filler and oil line, etc. Main pump is three group gear pump. The main performance is as following: Lubricating pump                 Rated displacement     90    ml/r                                Rated pressure         0.4    MPa                                Rated speed           2000   r/min Working pump                   Rated displacement     115    ml/r                                Rated pressure         3.1    MPa                                Rated speed           2000   r/min Oil draining pump                Rated displacement     160    m/r                                Rated pressure         0.5    MPa Rated speed           2000   r/min Maintenance filling capacity Fuel tank                                753L Water tank and diesel engine cooling water     125L Camshaft case of diesel engine               47L Bevel gear case hydraulic system of tractor     167L Final drive (one side)                       23L Rear seat buffer spring case (each side)         30L Pivot lubricating                           13L Implement system oil tank                   89L Blade Type          Height         Width         Capacity s-blade         1765mm       4172 mm        13.0 m 3 Ripper Type                   single, adjustable hydraulic ripper Rippering angle          45 ° Max. penetration      1150mm Max. lifting height     830mm Blade type Ground contact length(A) Overall Lenght(B) Blade height(C) Overall height(D) Blade width(E) Track center distance(F) Penetrating length Lifting height Blade capacity Straight tilting blade(s-blade) (with ripper) 3280 8090 1765 3952 4172 2200 614 1288 13.0 Straight tilting blade(S-blade) (with traction machanism)   China Track Bulldozer

China T140-1 Bulldozer is track-type model which utilizes semi-rigid suspension, mechanical drive and hydraulic control. It can be used in road building , hydro-electric construction , field modification, port and mine development and other constructions such as powr plant site.  T140-1 Technical Specification China T140-1 Bulldozer is track-type model which utilizes semi-rigid suspension, mechanical drive and hydraulic control. It can be used in road building , hydro-electric construction , field modification , port and mine development and other constructions . Overall dimensions (L X W X H) 5486 X 3762 X 2940mm Operation weight 17.0 t Horsepower 103.0 kW Max.drawbar pull 137.5 kN Ground pressure 65.0 kPa Min. turning radium 3.9 m Min. ground clearance 355 mm Gradient: longitudinal 30 ° , transverse 25 ° Working efficiency within 40 meters: 169 m 3 /h Blade capacity 4.05 m 3 Diesel engine Manufacture SHANGHAI DIESEL CO., LTD Model 6135Ak-3S Type Water-cooled , single row, vertical ,4-stroke-cycle Diesel engine with “ω� combustion chamber Number of cylinders-bore X stroke:6-135 X 150 mm Type of fuel pump B series fuel injection pump Piston displacement:12 L Rated rotation speed:1800 r/min Rated horsepower:114 kW Oil consumption rated horsepower Fuel consumption: < 238 g /kW · h Engine oil < 3.4 g /kW · h Max. torque ( < 1260r/min) < 726 N · m Mode of cooling closed circulation water cool Mode of starting 24V electric starting Air cleaner horizontal two - stage filtering " Manufacture WEIFANG DIESEL ENGINE CO., LTD Model WD615T1 -3A Type Straight line with water cooled and pressure boost, direct injection Cylinders number-Bore diameter X travel distance: 6-126 X 130mm Highest rpm at unloading: 2000 ± 50rpm Idle rotation speed: 700 ± 50rpm Piston total displacement: 9.726L Rated rpm: 1800r/min Rated power/rpm 115kW/1800rpm Fuel consumption at rated working condition: <218g /kW · h Oil to fuel consumtion rate: < 0.8% Max.torque/rpm: 780N · m/1200-1300rpm Smoke degree at rated point: < 1.5Rb Noise (at rated working condition): < 114dBA Admissible altitude: 4000m Main clutch and transmission Main clutch: normally opened, multi-plate, powder metallurgy friction plate and hydraulic booster control. Transmission:normally meshed helical gear drive, coupling sleeve shift and two lever operation .The transmission has five forward speeds and four backward speeds . Forward Backward First speed 2.5km/h First speed 3.53km/h Second speed 3.55km/h Second speed 4.96km/h Third speed 5.68km/h Third speed 7.94km/h Forth speed 7.53km/h Forth speed 10.53km/h Fifth speed 10.61km/h Steering and braking Steering clutch: Multiple-disc oil powder metallurgy disc compressed by spring. hydraulic operated. Brake is oil two direction floating band brake operated by mechanical foot pedal. Final drive Two stage gear deceleration ,Duo-cone floating seal ,combined carrier roller to facilitate service. Undercarriage Inner and outer beam of track roller frame are rectangular section �?/FONT>�?FONT face=Arial>�?frame .Track roller , carrier roller, idler are mounted with long life well sealed Duo-cone floating ring seal. Track roller (each side): Singe flange 4 Double flange 2 Carrier roller(each side): 2 Idler (each side) 1 Type of track: single grouser combined Tension mode of track: hydraulic Pitch: 203mm Number of shoes(each side) 38 pieces Width of shoe 500mm Length of track on ground 2570mm Sealed and lubricated track Δ The pitch , numbers and width of track shoes are the same with the general track. Implement hydraulic system It is consists of implement oil pump,hydraulic tank and various valves , cylinders , filters and oil lines . Pump type:gear pump Pump model:CBF - E 100A (reverse ) System flow:180 L/min System pressure:11.77 MPa Single valve:used in angle blade Used in coal pushing blade Δ Directions valves Four positions , five way spool valve Positions of valve Raise, lower, floating, hold Number of cylinders - bore x stroke 2 -¢ 100 X 905mm Double valves:used in angle blade and ripper Ripper and direction valve three positions , five way spool valve Positions of valve Raise, lower , hold Number of ripper cylinders - bore X stroke: 2 -¢ 125 X 325mm Double Valve used in straight blade Δ Tilting direction valve three positions,Δ five way spool valve Positions of valve left tilting, right tilting, hold Number of cylinders-bore X stroke: 2 -¢ 100 X 801mm Number of cylinders(straight blade)-bore X stroke: 1 -¢ 150 X 165mm Three valves used in straight blade and ripper Δ When the bulldozer companied with tilting blade is equipped with ripper, a set of outside valves can be installed outside of inner case of hydraulic control tank. Cab The cab is equipped with adjustable seat and electric fan with the character of low noise and excellent viewing area . The following cabs can be selected by users . 1 . Cab with air-conditioner 2 . Conopy with RopS 3 . Simple structure canopy Service refill Fill location Capacity(L) Radiator and diesel engine water 60 Lubricating system of diesel engine oil 25 Flywheel house, main clutch oil 35 Transmission, bevel gear case oil 90 Final drive (each) oil 24 Implement hydraulic system oil 85 Fuel tank oil 230 Idler, track roller,carrier roller oil 0.35 each Blade specifications Blade Angle Straight Coal pushing Width 3762mm 3297 mm 4240mm Height 1037mm 1170mm 1350mm Max. digging depth 400mm 400mm Ground clearance 1000mm 915mm 1000mm Tilting angle 9 ° 8.5 ° Blade capacity 9m 3 Ripper specifications Number of shank 3 1 Length 1580 mm 1580 mm Width 2020 mm 1220 mm Height 1236 mm 1236 mm Max. penetration 550 mm 550 mm Max. clearance 510 mm 510 mm Note:Δ indicate optional parts. we also provide the following bulldozers ·China Bulldozer T140-2 ·China T165-1 Bulldozer ·China T165-2 Bulldozer ·China SD8 Track Bulldozer  ·China big horse power Bulldozer ·China SD6E Bulldozer ·quotation-and-specification-on-SD8B-bulldozer  Other engieering equipments: ·Truck Mounted Crane Crawler ·Trailer Concrete Pump ·China Bulldozer ·China Crane