HM350-2

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Engine   
Model    Komatsu SAA6D140E-5 
Type    Water-cooled, 4-cycle 
Aspiration    Turbo-charged, after-cooled, cooled EGR 
Number of cylinders   
Bore  5.51''  140 mm 
Stroke  6.50''  165 mm 
Piston displacement  930 in  15.24 ltr 
Horsepower     
SAE J1995  408 HP  304 kW 
ISO 9249 / SAE J1349  394 HP  294 kW 
Rated RPM    2000 RPM 
Fan drive type    Mechanical 
Maximum torque at 1400 rpm  1,468 lb. ft  203 kgm 
Fuel system    Direct injection 
Governor    Electronically controlled 
Lubrication system:     
Method    Gear pump, force-lubrication 
Filter    Full-flow type 
Air cleaner    Dry type with double elements and precleaner (cyclopack type), plus dust indicator 
EPA Tier 3 and EU stage 3A emissions certified.     
Transmission   
Torque converter    3-elements, 1-stage, 2-phase 
Transmission    Full-automatic, counter-shaft type 
Speed range    6 speeds forward and 2 reverse 
Lockup clutch    Wet, single-disk clutch 
Forward    Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears 
Reverse    Torque converter drive and direct drive in all gear 
Shift control    Electronic shift control with automatic clutch modulation in all gear 
Maximum travel speed  35.5 mph  57.1 km/h 
Axles   
Full time all wheel drive with 100% differential lock in all axles. 
Final drive type    Planetary gear 
Ratios:     
Differential    3.231 
Planetary    4.941 
Suspension System   
Front    Hydro-pneumatic suspension 
Rear    Combined hydro-pneumatic and rubber suspension system 
Steering System   
Type    Articulated type, fully hydraulic power steering with two double-acting cylinders 
Supplementary steering    Automatically actuated, electrically powered 
Minimum turning radius, wall to wall  28'3''  8.6 m 
Articulation angle    45 each direction 
Brakes   
Service brakes    Full-hydraulic control, oil-cooled multiple-disc type on front and center axles 
Parking brake    Spring applied, caliper disc type 
Retarder    Front and center axle brakes act as retarder 
Main Frame   
Type    Articulated type, box-sectioned construction on front and rear Connected by strong torque tubes. 
Body   
Capacity:     
Struck  19.1 yd  14.6 m 
Heaped (2:1, SAE)  25.9 yd  19.8 m 
Payload  35.6 U.S. tons  32.3 metric tons 
Material (high tensile strength steel)  185,000 psi  130 kg/mm 
Material thickness:     
Bottom  0.63''  16 mm 
Front  0.31''  8 mm 
Sides  0.47''  12 mm 
Target area (inside length x width):  18'0" x 9'8"  5495 mm x 2935 mm 
Heating    Exhaust heating (option) 
Hydraulic System   
Hoist cylinder    Twin, 2 -stage telescopic type 
Relief pressure  2,990 PSI  210 kg/cm / 20.6 Mpa 
Hoist time    12 sec 
Cab   
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards 
Weight (approximate)   
Empty weight  68,500 lb  31060 kg 
Gross vehicle weight  139,900 lb  63440 kg 
Weight distribution (Empty) :     
Front axle    57.4% 
Center axle    21.6% 
Rear axles    21.0% 
Weight distribution (Loaded) :     
Front axle    31.8% 
Center axle    34.2% 
Rear axles    34.0% 
Tires   
Standard tire    26.5 R25 
Service Refill Capacities   
Fuel tank  130.3 U.S. Gal  493 ltr. 
Engine oil  13.2 U.S. Gal  50 ltr. 
Torque converter, transmission and retarder cooling  30.4 U.S. Gal  115 ltr. 
Differentials (total)  21.8 U.S. Gal  82.5 ltr. 
Final drives (total)  10.0 U.S. Gal  38 ltr. 
Hydraulic system  47.6 U.S. Gal  180 ltr. 
Suspension (total)  5.6 U.S. Gal  21.2 ltr. 

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