KOMATSU 785-7 Productivity and Economy Features
● High performance Komatsu SAA12V140E-3 engine Net horsepower 879kW 1,178HP
● Mode selection system with variable horsepower control (VHPC)
● Two-speed selective reverse gears of RH and RL
● Anti-pitching 4-wheel oil-cooled multiple-disc retarder (AP-FOUR)Retarder absorbing capacity 1092kW 1,464HP (Continuous descent)
● Automatic retard speed control (ARSC) as standard
● High performance Komatsu SAA12V140E-3 engine Net horsepower 879kW 1,178HP
● Mode selection system with variable horsepower control (VHPC)
● Two-speed selective reverse gears of RH and RL
● Anti-pitching 4-wheel oil-cooled multiple-disc retarder (AP-FOUR)Retarder absorbing capacity 1092kW 1,464HP (Continuous descent)
● Automatic retard speed control (ARSC) as standard
785-7 ENGINE SPECIFICATION
Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA12V140E-3
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle
Aspiration. . . . . . . . . . . . . . . . . . . . . . . . Turbo-charged, after-cooled
Number of cylinders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bore x Stroke. . . . . . . . . . . . . . . . 140 mm x 165 mm 5.51"x 6.50"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . 30.48 ltr 1,860 in3
Horsepower
SAE J1995. . . . . . . . . . . . . . . . . . . . . . . Gross 895 kW 1,200 HP
ISO 9249 / SAE J1349. . . . . . . . . . . . . . . Net 879 kW 1,178 HP
Rated rpm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,900 rpm
Fan drive type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical
Maximum torque. . . . . . . . . . . . . . . . . . . . . . . 518 kg•m 3,747 lb.ft
Fuel system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct injection
Governor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic control
Lubrication system
Method. . . . . . . . . . . . . . . . . . . . . . . Gear pump, force-lubrication
Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow type
Air cleaner. . . . . . . . . . . . . . . . . . Dry type with double elements and precleaner, with dust indicator
TRANSMISSION
Torque converter. . . . . . . . . . . . . . . . . 3-elements, 1-stage, 2-phase
Transmission. . . . . . . . . . . . . . . Full-automatic, planetary-shaft type
Speed range. . . . . . . . . . . 7 speeds forward and 2 reverse (RH, RL)
Lockup clutch. . . . . . . . . . . . . . . . . . . . . . . Wet, multiple-disk clutch
Forward. . . . . . . . . . . . . . . . . . . . Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
Reverse. . . . . . . . . . . . . Torque converter drive, direct drive (lockup)
Shift control. . . . . . . . . . . . . . . Electronic shift control with automatic clutch modulation in all gear
Maximum travel speed . . . . . . . . . . . . . . . . . . . 65 km/h 40.4 mph
AXLES
Rear axles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-floating
Final drive type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Ratios:
Differential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.357
Planetary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.333
SUSPENSION SYSTEM
Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration.
Effective cylinder stroke:
Front suspension. . . . . . . . . . . . . . . . . . . . . . . . . . 320 mm 12.6"
Rear suspension. . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 mm 5.0"
Rear axle oscillation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5°
STEERING SYSTEM
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully hydraulic power steering with two double-acting cylinders
Supplementary steering. . . . . . . . . . . . . Meets ISO 5010, SAE J1511
Minimum turning radius. . . . . . . . . . . . . . . . . . . . . . . . . . 10.1 m 33'2"
Maximum steering angle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41°
CAB
Dimensions comply with ISO 3471 ROPS (Roll-Over Protective Structure) standard, and ISO 3449 FOPS standard.
MAIN FRAME
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-sectioned structure Integral front bumper
BRAKES
Brakes meet ISO 3450 standard.
Service brakes:
Front. . . . . . . . . . Fully hydraulic control, oil-cooled multiple-disc type
Rear. . . . . . . . . . Fully hydraulic control, oil-cooled multiple-disc type
Parking brake. . Spring applied, multiple-disc type(actuates on all wheels)
Retarder. . . Oil-cooled, multiple-disc front and rear brakes act as retarder.
Secondary brake. . . . . . . . . . . . . . . . . . . . . . Manual pedal operation.
When hydraulic pressure drops below the rated level, parking brake is automatically actuated.
Brake surface
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37467 cm2 5,807 in2
Rear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72414 cm2 11,224 in2
BODY
Capacity:
Struck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 m3 52.3 yd3
Heaped (2:1, SAE). . . . . . . . . . . . . . . . . . . . . . . . 60 m3 78.5 yd3
Payload. . . . . . . . . . . . . . . . . . . . 91.0 metric tons 100.3 U.S.tons
Material. . . . . . . . . . 400 Brinell hardness high tensile strength steel
Structure. . . . . . . . . . . . . . . . . . . . . . . . V-shape body with V-bottom
Material thickness:
Bottom. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm 0.75"
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm 0.47"
Sides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 mm 0.35"
Target area
(inside length x width). . . . . . . 7065 mm x 5200 mm 23'2"x 17'1"
Dumping angle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48°
Height at full dump. . . . . . . . . . . . . . . . . . . . . . . . . 10080 mm 33'1"
Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust heating
HYDRAULIC SYSTEM
Hoist cylinder. . . . . . . . . . . . . . . . . . . . Twin, 2-stage telescopic type
Relief pressure. . . . . . . . . . . . . . . . 20.6 MPa210 kg/cm2 2,990 psi
Hoist time
Raise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 sec
Lower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 sec
WEIGHT (APPROXIMATE)
Empty weight. . . . . . . . . . . . . . . . . . . . . . . . . 72000 kg 158,800 lb
Max.gross vehicle weight. . . . . . . . . . . . . . . . 166000 kg 366,000 lb
Not to exceed max.gross vehicle weight, including options, fuel and payload.
Weight distribution:
Empty:Front axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47%
Rear axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53%
Loaded:Front axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.5%
Rear axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68.5%
TIRES
Standard tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.00 R49
SERVICE REFILL CAPACITIES
Fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . 1308 ltr. 345.6 U.S.Gal
Engine oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 ltr. 34.1 U.S.Gal
Torque converter, transmission and retarder cooling. . . . . . . . . . . . . . . . . . . . . 205 ltr. 54.2 U.S.Gal
Differentials. . . . . . . . . . . . . . . . . . . . . . . . . . . 137 ltr. 36.2 U.S.Gal
Final drives (total). . . . . . . . . . . . . . . . . . . . . . 128 ltr. 33.8 U.S.Gal
Hydraulic system. . . . . . . . . . . . . . . . . . . . . . . 175 ltr. 46.2 U.S.Gal
Brake control. . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ltr. 9.5 U.S.Gal
Suspension (total). . . . . . . . . . . . . . . . . . . . . . . 93 ltr. 24.6 U.S.Gal
DIMENSIONS
Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA12V140E-3
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle
Aspiration. . . . . . . . . . . . . . . . . . . . . . . . Turbo-charged, after-cooled
Number of cylinders. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Bore x Stroke. . . . . . . . . . . . . . . . 140 mm x 165 mm 5.51"x 6.50"
Piston displacement. . . . . . . . . . . . . . . . . . . . . . 30.48 ltr 1,860 in3
Horsepower
SAE J1995. . . . . . . . . . . . . . . . . . . . . . . Gross 895 kW 1,200 HP
ISO 9249 / SAE J1349. . . . . . . . . . . . . . . Net 879 kW 1,178 HP
Rated rpm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,900 rpm
Fan drive type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical
Maximum torque. . . . . . . . . . . . . . . . . . . . . . . 518 kg•m 3,747 lb.ft
Fuel system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Direct injection
Governor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic control
Lubrication system
Method. . . . . . . . . . . . . . . . . . . . . . . Gear pump, force-lubrication
Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-flow type
Air cleaner. . . . . . . . . . . . . . . . . . Dry type with double elements and precleaner, with dust indicator
TRANSMISSION
Torque converter. . . . . . . . . . . . . . . . . 3-elements, 1-stage, 2-phase
Transmission. . . . . . . . . . . . . . . Full-automatic, planetary-shaft type
Speed range. . . . . . . . . . . 7 speeds forward and 2 reverse (RH, RL)
Lockup clutch. . . . . . . . . . . . . . . . . . . . . . . Wet, multiple-disk clutch
Forward. . . . . . . . . . . . . . . . . . . . Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
Reverse. . . . . . . . . . . . . Torque converter drive, direct drive (lockup)
Shift control. . . . . . . . . . . . . . . Electronic shift control with automatic clutch modulation in all gear
Maximum travel speed . . . . . . . . . . . . . . . . . . . 65 km/h 40.4 mph
AXLES
Rear axles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Full-floating
Final drive type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear
Ratios:
Differential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.357
Planetary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.333
SUSPENSION SYSTEM
Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration.
Effective cylinder stroke:
Front suspension. . . . . . . . . . . . . . . . . . . . . . . . . . 320 mm 12.6"
Rear suspension. . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 mm 5.0"
Rear axle oscillation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5°
STEERING SYSTEM
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . Fully hydraulic power steering with two double-acting cylinders
Supplementary steering. . . . . . . . . . . . . Meets ISO 5010, SAE J1511
Minimum turning radius. . . . . . . . . . . . . . . . . . . . . . . . . . 10.1 m 33'2"
Maximum steering angle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41°
CAB
Dimensions comply with ISO 3471 ROPS (Roll-Over Protective Structure) standard, and ISO 3449 FOPS standard.
MAIN FRAME
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Box-sectioned structure Integral front bumper
BRAKES
Brakes meet ISO 3450 standard.
Service brakes:
Front. . . . . . . . . . Fully hydraulic control, oil-cooled multiple-disc type
Rear. . . . . . . . . . Fully hydraulic control, oil-cooled multiple-disc type
Parking brake. . Spring applied, multiple-disc type(actuates on all wheels)
Retarder. . . Oil-cooled, multiple-disc front and rear brakes act as retarder.
Secondary brake. . . . . . . . . . . . . . . . . . . . . . Manual pedal operation.
When hydraulic pressure drops below the rated level, parking brake is automatically actuated.
Brake surface
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37467 cm2 5,807 in2
Rear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72414 cm2 11,224 in2
BODY
Capacity:
Struck. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 m3 52.3 yd3
Heaped (2:1, SAE). . . . . . . . . . . . . . . . . . . . . . . . 60 m3 78.5 yd3
Payload. . . . . . . . . . . . . . . . . . . . 91.0 metric tons 100.3 U.S.tons
Material. . . . . . . . . . 400 Brinell hardness high tensile strength steel
Structure. . . . . . . . . . . . . . . . . . . . . . . . V-shape body with V-bottom
Material thickness:
Bottom. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 mm 0.75"
Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm 0.47"
Sides. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 mm 0.35"
Target area
(inside length x width). . . . . . . 7065 mm x 5200 mm 23'2"x 17'1"
Dumping angle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48°
Height at full dump. . . . . . . . . . . . . . . . . . . . . . . . . 10080 mm 33'1"
Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust heating
HYDRAULIC SYSTEM
Hoist cylinder. . . . . . . . . . . . . . . . . . . . Twin, 2-stage telescopic type
Relief pressure. . . . . . . . . . . . . . . . 20.6 MPa210 kg/cm2 2,990 psi
Hoist time
Raise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 sec
Lower. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 sec
WEIGHT (APPROXIMATE)
Empty weight. . . . . . . . . . . . . . . . . . . . . . . . . 72000 kg 158,800 lb
Max.gross vehicle weight. . . . . . . . . . . . . . . . 166000 kg 366,000 lb
Not to exceed max.gross vehicle weight, including options, fuel and payload.
Weight distribution:
Empty:Front axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47%
Rear axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53%
Loaded:Front axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.5%
Rear axle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68.5%
TIRES
Standard tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27.00 R49
SERVICE REFILL CAPACITIES
Fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . 1308 ltr. 345.6 U.S.Gal
Engine oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 ltr. 34.1 U.S.Gal
Torque converter, transmission and retarder cooling. . . . . . . . . . . . . . . . . . . . . 205 ltr. 54.2 U.S.Gal
Differentials. . . . . . . . . . . . . . . . . . . . . . . . . . . 137 ltr. 36.2 U.S.Gal
Final drives (total). . . . . . . . . . . . . . . . . . . . . . 128 ltr. 33.8 U.S.Gal
Hydraulic system. . . . . . . . . . . . . . . . . . . . . . . 175 ltr. 46.2 U.S.Gal
Brake control. . . . . . . . . . . . . . . . . . . . . . . . . . . 36 ltr. 9.5 U.S.Gal
Suspension (total). . . . . . . . . . . . . . . . . . . . . . . 93 ltr. 24.6 U.S.Gal
DIMENSIONS
STANDARD EQUIPMENT FOR BASE MACHINE ENGINE:● Automatic Idling Setting System (AISS)
● Alternator, 90A/24V
● Batteries, 4 x 12V/170Ah
● EPA Tiea2 emission regulation certified engine, Komatsu SAA12V140E-3
● Mode selection system with VHPC
● Starting motor, 2 x 7.5 kW
CAB:
● Ashtray
● Cigarette lighter
● Cup holder
● Electronic dump control system with body positioner
● Electronic maintenance display/monitoring system
● Laminated glass, front
● Operator seat, reclining, suspension type with retractable 78 mm 3" width seat belt
● Passenger seat with retractable seat belt
● Power window (LH)
● ROPS cab with FOPS, sound suppression type
● Space for lunch box
● Steering wheel, tilt and telescopic
● Sunvisor
● Two doors, left and right
● Windshield washer and wiper (with intermittent feature)
LIGHTING SYSTEM:
● Back-up light
● Hazard lights
● Headlights
● Indicator, stop and tail lights
GUARD AND COVERS:
● Cab guard
● Canopy spill guard
● Drive shaft guard (front and rear)
● Exhaust thermal guard
● Fire protective covers
SAFETY EQUIPMENT:
● Alarm, backup
● Anti-pitching 4-wheel oil-cooled multiple disc retarder (AP-FOUR)
● Automatic Retard Speed Control (ARSC)
● Automatic supplementary steering
● Coolant temperature alarm and light
● Hand rails for platform
● Horn, electric
● Ladders, left and right hand sides
● Overrun warning system
● Rearview mirrors and under view mirrors
OTHER:
● Centralized greasing
● Electric circuit breaker, 24V
● Disc wheels (Flange type rims)
● Mud guards
● Vehicle health monitoring system (VHMS)
BODY:
● Body exhaust heating
● Cab guard, left side
● Spill guard, 150mm 6"
TIRES:
● 27.00 R49
OPTIONAL EQUIPMENT
CAB:
● Air conditioner
● Heater and defroster
● Operator seat, air suspension type
● Power window (RH)
● Radio, AM/FM with cassette
● Sunvisor, additional
BODY:
● Body liners
● Platform guard, right hand side
● Muffler (without body heating)
LIGHTING SYSTEM:
● Buck-up light additional
● Back work lights, left and right sides
● Fog lights
● LED rear combination lights
SAFETY:
● Antilock Brake System (ABS)
● Automatic Spin Regulator (ASR)
● Exhaust retarder
● Rear view camera and monitor
● Tire stopper blocks
ARRANGEMENT:
● Batteries for cold area arrangement
● Cold area arrangement
● Sandy and dusty area arrangement
OTHER:
● Auto-greasing system
● Engine coolant heater
● Engine oil pan heater
● Engine side cover
● Engine underguard
● Fire extinguisher
● Fuel quick charge
● Payload meter
● Spare parts for first service
● Three-mode hydropneumatic suspension
● Tool kit
● Transmission underguard
● Vandalism protection
● VHMS with satellite communication kit
TIRES:
● 31/90 R49
***Standard equipment may vary for each country, and this specification sheet may contain attachments and optional equipment that are not available in your area.Please consult your Komatsu distributor for detailed information.
Source : KOMATSU
