Description
Our 91-tonne capacity mechanical drive HD785-7 offers the highest brake retardation in its class, along with Komatsu’s advanced transmission system for greater safety in all types of mining applications. As with all our trucks, key components are designed and manufactured by Komatsu to work together in an integrated package. And it comes standard with our KOMTRAX PLUS remote monitoring and location system, backed by our Australia-wide service and support network.
Engine
| Model |
Komatsu SAA12V140E-3 |
| Type |
Four-cycle, water-cooled, direct injection |
| Aspiration |
Turbo-charged, after-cooled |
| Number of cylinders |
12 |
| Bore x stroke |
140 mm x 165 mm |
| Displacement |
30.48 ltr |
| Horsepower, Gross - SAE J1995 |
895 kW / 1200 HP |
| Horsepower, Net - ISO 9249 / SAE J1349 |
879 kW / 1178 HP |
| Rated RPM |
1900 |
| Fan drive method |
Mechanical |
| Emissions certification |
EPA Tier 2 |
Body
| Capacity, struck |
40 m3 |
| Capacity, heaped (2:1 SAE) |
60 m3 |
| Payload |
91700 kg |
| Target area (inside length x width) |
7070 mm x 5150 mm |
| Heating |
Exhaust heating |
| Material |
400 Brinell hardness high tensile strength steel |
| Material thickness: |
| Bottom |
19 mm |
| Front |
12 mm |
| Sides |
9 mm |
Brakes
| Standard |
ISO3450 |
| Service brake - front |
Full-hydraulic control, oil-cooled, multiple-disc type |
| Service brake - rear |
Full-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 |
Pedal operation. When hydraulic pressure drops below rated level, parking brake automatically actuated |
| Brake surface: |
|
| Front |
37467 cm2 |
| Rear |
72414 cm2 |
-
Cab
| Standard |
ISO3471 (ROPS)
ISO3449 (FOPS)
|
-
Hydraulic System
| Hoist cylinder |
Twin, two-stage telescopic type |
| Relief pressure |
20.6 MPa
210 kg/cm2
|
| Hoist time |
|
| Raise |
13 sec |
| Lower |
14 sec |
-
Steering System
| Type |
Fully hydraulic power steering with two double-acting cylinders |
| Supplementary steering |
Meets ISO5010, SAEJ1511 |
| Minimum turning radius |
10.1 m |
| Maximum steering angle |
41° |
-
Suspension System
Independent , hydro-pneumatic suspension cylinder with fixed throttle to dampen vibration
| Effective cylinder stroke: |
|
| Front suspension |
320 mm |
| Rear suspension |
127 mm |
| Rear axle oscillation |
6.5° |
Transmission
| Torque converter |
3-elements, 1-stage, 2-phase |
| Transmission |
Full-automatic, planetary-gear type |
| Speed range |
7 forward and 2 reverse (RH, RL) |
| 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, direct drive (lockup) |
| Shift control |
Electronic shift control with automatic clutch modulation in all gears |
| Maximum travel speed |
65 km/h |
-
Tyres
-
Weight Distribution:
| Empty: |
| Front axle |
47% |
| Rear axle |
53% |
| Loaded: |
| Front axle |
31.4% |
| Rear axle |
68.6% |
Weight (Approximate)
Empty and Gross Weight:
| Empty weight |
72000 kg |
| Gross vehicle weight |
163780 kg |
Axles
| Rear axle |
Full-floating |
| Final drive type |
Planetary gear |
| Ratios: |
|
| Differential |
3.357 |
| Planetary |
6.333 |