KOMATSU HD785-8
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Year
2024
Manufacturer
Komastu
Model
HD785-8
Condition
New
Power on grade. Exceptional brake-retarding performance.
With a rated payload of 101.6 U.S. tons, the HD785-8 is ready to produce in your mining, quarry, and aggregate applications. The Komatsu SAA12V140E-7 engine provides 1,140 net horsepower for excellent speed-on-grade. Oil-cooled, multiple-disc brakes on the front and rear wheels offer excellent brake-retarding capability when descending grades.
- 101.6 U.S. ton-rated payload / 78.5 yd³ V-shape dump body
- 33'2" turning radius due to the MacPherson-strut-type independent suspension
- Wet disc brakes on all four wheels deliver 1,770 HP of retarder-absorption capacity
Engine
| Model | Komatsu SAA12V140E-7* |
| Type | Water-cooled, four-cycle |
| Aspiration | Turbo-charged, after-cooled, cooled EGR |
| Number of cylinders | 12 |
| Bore x Stroke | 5.51 x 6.50 in |
| Piston displacement | 1,860 in³ |
| Horsepower | |
| SAE J1995 - Gross | 1,200 HP |
| ISO 9249 / SAE J1349 - Net | 1,178 HP |
| Rated rpm | 1,900 rpm |
| Fan drive type | Mechanical |
| Maximum torque | 3,739 ft.-lbs. |
| 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, precleaner and evacuator valve |
*EPA Tier 4 Final emissions certified
Transmission
| Torque converter | Three-elements, one-stage, two-phase |
| Transmission | Full-automatic, planetary type |
| Speed range | Seven speeds forward and two reverse |
| Lockup clutch. | Wet, multiple-disc clutch |
| Forward | Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears |
| Reverse | Torque converter drive and direct (lockup) |
| Shift control | Electronic shift control with automatic clutch modulation in all gears |
| Maximum travel speed | 40.4 mph |
Axles
| Rear axles | Full-floating |
| Final drive type | Planetary gear |
| Ratios: | |
| Differential | 2.944 |
| Planetary | 7.235 |
Suspension System
McPherson strut type front suspension and four-link type rear axle suspension with independent, hydropneumatic cylinders.
| Effective cylinder stroke: | |
| Front suspension | 1 ft. 0.6 in |
| Rear suspension | 5 in |
| Rear axle oscillation: | |
| Oil stopper | 5.3° |
| Mechanical stopper | 6.0° |
Steering System
| Type | Fully hydraulic power steering with two double-acting cylinders |
| Secondary steering | Automatic/Manual control (Meets ISO 5010 and SAE J1511) |
| Minimum turning radius | 33 ft. 2 in |
| Maximum steering angle | 41° |
Cab
|
Standard: |
FOPS (ISO 3449 level II), ROPS (ISO 3471) |
Brakes
Brakes meet ISO 3450 standards.
| 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 |
| 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 | 6,075 in² |
| Rear | 11,138 in² |
Main Frame
| Type | Box-sectioned structure |
Body
| Capacity: | |
| Struck | 52.3 yd³ |
| Heaped (2:1, SAE) | 78.5 yd³ |
| Payload | 101.6 US tons |
| Material | 400 brinell hardness high tensile strength steel |
| Structure | V-shape body with V-bottom |
| Material thickness: | |
| Bottom | 0.75 in |
| Front | 0.47 in |
| Sides | 0.35 in |
| Target area (inside length x width) | 23 ft. 2 in x 16 ft. 11 in |
| Height at full dump | 33 ft. 1 in |
| Heating | Exhaust heating |
Hydraulic System
| Hoist cylinder | Twin, two-stage telescopic type |
| Relief pressure | 2,990 psi |
| Hoist time | 11.5 s |
Weight (approximate)
| Rated empty vehicle weight | 162,701 lbs. |
| Rated gross vehicle weight | 365,967 lbs. |
| Weight distribution (Empty): | |
| Front axle | 51.5% |
| Rear axle | 48.5% |
| Weight distribution (Loaded): | |
| Front axle | 33.2% |
| Rear axle | 66.8% |
Tires
| Standard tire | 27.00 R49 |
Service Refill Capacities
| Fuel tank | 349.2 US gal |
| Engine oil | 36.5 US gal |
| Torque converter, transmission and retarder cooling | 140.0 US gal |
| Differentials | 59.6 US gal |
| Final drives (total) | 30.6 US gal |
| Hydraulic system | 101.7 US gal |
| Suspension (total) | 24.5 US gal |
ENGINE AND RELATED COMPONENTS
- Air cleaner, double element with restriction indicator (qty 2)
- Auto Idle Shutdown
- Automatic Idling Setting System (AISS)
- Electric priming fuel pump
- Engine, KOMATSU SAA12V140E-7, 12 cylinder, turbocharged, after cooled, EGR cooled, diesel
Gross HP: 895 kW / 1900 RPM (SAE J1995)
Net HP: 849 kW / 1900 RPM (ISO 9249 / SAE J1349) - Engine pre-lubrication system
- Engine secondary shutdown switch
- Fan, hydraulically driven, reversible
- Komatsu diesel particulate filter (KDPF) (qty 2)
- Radiator, lead free, modular core
ELECTRICAL SYSTEM
- Alternator, 140 amp, 24 volt
- Back-up alarm
- Batteries, 4 x 12V
- Battery isolator
- Electric circuit breakers, 24V
- Emergency stop switch, ground level
- Horn, electric
- Lights
- Access ladder lamps
- Back-up Lamps, rear
- Engine compartment lamp
- Fog lamps
- Head lamps, high and low beam, LED
- Side working lamps, LH & RH, LED
- Stop and tail Lamps, LED
- Turn signals, hazard warning, front & rear, LED
- Starter isolator
- Starting motors, 2 x 11.0 kW, electric
POWER TRAIN AND CONTROLS
- 7-speed transmission, fully automatic, (7F, 2R)
- Brake cooling oil recovery tank
- Brakes, oil cooled, multiple disc, hydraulically controlled, front & rear
- Komatsu Traction Control System (KTCS)
- Neutral coast inhibitor
- Parking brake, integrated in front & rear brakes
- Retarder, automatic & manual
- Secondary brake, pedal actuated, variable
- Skip shift function
- Speed limiter
- Torque converter with electronic lockup control
OPERATOR ENVIRONMENT
- Cab with built-in ROPS/FOPS (ISO 3471/ISO 3449)
- 12V outlet (qty 2)
- Automatic climate control system with cab pressurization
- Body hoist control, electric
- Cigarette lighter and ashtray
- Cup holder
- Door, LH & RH
- KomVision camera system with dedicated monitor
- Machine monitor with 7" color LCD display
- Mode selection system with Variable Horsepower Control (VHPC)
- Operator seat, air suspension, heated, ventilated with 3-point 3" retractable seat belt
- Power windows, LH & RH
- Radio, AM/FM with aux input, USB, & bluetooth
- Rearview mirror, outside cab mount, heated (qty 2)
- Rearview monitoring system with dedicated monitor
- Secondary steering, automatic & manual
- Steering wheel, tilt and telescopic
- Sunvisor (qty 2)
- Tinted glass with electric defogger
- Trainer seat with 3" retractable lap belt
- Underview mirror
- Wiper/washer, windshield (intermittent)
- Diagonal access stairway
GUARD AND COVER GROUP
- Cab & platform guard
- Catwalk with handrails, skid resistant
- Driveline guards, front & rear
- Engine side covers
- Engine underguard
- Exhaust thermal guard
- Fire safety shield (located behind engine)
- Mud flaps
- Rock ejector bars
- Transmission underguard
OTHER STANDARD EQIUPMENT
- Anchor points, tie off type (ISO 14567)
- Automatic Retard Speed Control (ARSC)
- Cold weather package (electric heaters for engine oil & coolant heater)
- Dump counter
- Ecology guidance and ecology gauge
- Engine oil & coolant heater, electric
- Fast fill coupler for fuel tank
- Filler cap lock & cover lock
- Ground level service center
-Centralized KOWA sampling
-Fluids ports
Transmission, engine, brake control, steering and hoist oil - Hydropneumatic Suspension, Front & Rear
- Jump start receptacle
- KOMTRAX Plus®
- Machine immobilization switch
- Overload prevention system
- Overrun warning and prevention
- Overturn warning system
- Payload meter
- PM service connectors
- Rims for 27.00 R49 tires with large bore valve stems (qty 6)
- Safety pins (qty 2)
- Wheel chocks (qty 2)
BODY
- Dump body, 78.5 yd3
- Steel liners for rock body (78.5 yd3)
- Body heating kit
TIRES
- Michelin XDR2B (qty 6)
- Bridgestone VMTP (qty 6)
OTHERS
- Power boarding ladder
SUPPORT YOU CAN COUNT ON
FINANCING
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WARRANTY PROGRAMS
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