Komatsu HD405-8 MECHANICAL TRUCKS
Product Feature
Small Turning Radius
The McPherson strut type front suspension has a special A-arm between each wheel and the main frame. The wider space created between the front wheels and the main frame increases the turning angle of the wheels. The larger turning angle correlates to a smaller turning radius.
Minimum Turning Radius: 25'11" 7.9 m
Fully Hydraulic
Rear wet multiple-disc brakes ensure highly reliable and stable brake performance. The large-capacity, continuously-oilcooled, multiple-disc brakes also function as a highly responsive retarder, which gives the operator greater confidence at higher downhill speeds.
Retarder Absorbing Capacity: 924 HP 689 kW
Komatsu Advanced Transmission with Optimum. Modulation Control System (K-ATOMiCS) with Skip Shift Function
Fully automatic control selects the optimum gear, according to vehicle speed and the engine speed. The shift point automatically changes, depending on the acceleration of the vehicle. This avoids unnecessary fuel consumption.
Komatsu Traction Control System
New KTCS ensures optimum traction in soft or wet road conditions. The system monitors for wheel slippage at the rear axle, and an acceleration sensor allows determination of a high speed turn versus slippage.
If slippage is detected, the brakes are applied independently to each wheel set for optimum traction. This function occurs automatically without operator input and steering performance is not compromised, as with a differential lock system.
Ergonomically Designed Cab
The ergonomically designed operator's compartment provides the operator a convenient control layout and comfortable environment for more confident operation and greater productivity.
Air Suspension Seat
The heated and ventilated, air suspension, fabric-covered seat is adjustable to the operator’s weight, and is provided as standard. The air suspension seat dampens vibrations transmitted from the machine to reduce operator fatigue. A three-point operator seat belt is standard.
Rearview Monitor System
The operator can view behind the vehicle on the full color monitor, located on the right side of the dashboard. This monitor can be always ON, or only when the shift lever is in the reverse position. Visual distance guidelines can be added for the operator's convenience.
Convenient Access
Inclined stairs with handrails provide easy access to the cab and service deck.
High Rigidity Frame
Cast-steel components are used in critical areas of the main frame where loads and shocks are most concentrated.
Integrated Payload Meter
PLM is a tool to manage the hauling cycle payloads and to analyze the production volume and working conditions of the dump truck for specific time periods. Loaded weight is shown on the payload display (on the LCD unit), and by the external display lamps in real time, while loading.
Ground Accessible Battery Compartment
The battery compartment is located at ground level to facilitate daily checks and battery replacement.
Engine
| Model | Komatsu SAA6D140E-7* | |
| Type | Water-cooled, 4-cycle | |
| Aspiration | Variable geometry, turbo-charged, air-to-air after-cooled, cooled Exhaust Gas Recirculation (EGR) |
|
| Number of cylinders | 6 | |
| Bore x stroke | 140 mm x 165 mm | 5.5" x 6.5" |
| Piston displacement | 15.24 ltr. | 930 in3 |
| Horsepower: | ||
| SAE J1995 | 386 kW | 518 HP |
| ISO 9249 /SAE J1349 | 383 kW | 514 HP |
| Rated rpm | 2,000 rpm | |
| Fan drive type | Hydraulic | |
| Maximum torque | 221 kg•m | 1600 Ib•ft |
| Fuel system | Direct injection | |
| Governor | Electronically controlled | |
| Lubrication system: | ||
| Method | Gear pump, force-Iubric | |
| Filter | Full-flow type | |
| Air cleaner | Dry type with double elements and precleaner, plus dust indicator | |
| *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 one reverse | |
| Lockup clutch | Wet, single-disc clutch | |
| Forward | Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gear | |
| Reverse | Torque converter drive | |
| Shift control | Electronic shift control with automatic clutch modulation in all gear | |
| Maximum travel speed | 66 km/h |
41.0 mph |
Axles
| Rear Axle | Full-floating |
| Final drive type | Planetary gear |
| Ratios: | |
| Differential | 3.125 |
| Planetary | 5.211 |
Suspension System
| Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration | ||
| Effective cylinder stroke (front suspension) | 250 mm | 9.8" |
| Rear axle oscillation: | ||
| Oil stopper | 6.8° | |
| Mechanical stopper | 8.1° |
Steering System
| Type | Fully hydraulic power steering with two double-acting cylinders | |
| Supplementary steering | Automatic/manual controlled (meets ISO 5010, SAE J1511 and SAE J53) | |
| Minimum turning radius | 7.9 m |
25' 11" |
| Maximum steering angle | 38° |
Cab
Dimensions comply with ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards.
Product Parameter
| Model | Komatsu SAA6D140E-7* | |
| Type | Water-cooled, 4-cycle | |
| Aspiration | Variable geometry, turbo-charged, air-to-air after-cooled, cooled Exhaust Gas Recirculation (EGR) |
|
| Number of cylinders | 6 | |
| Bore x stroke | 140 mm x 165 mm | 5.5" x 6.5" |
| Piston displacement | 15.24 ltr. | 930 in3 |
| Horsepower: | ||
| SAE J1995 | 386 kW | 518 HP |
| ISO 9249 /SAE J1349 | 383 kW | 514 HP |
| Rated rpm | 2,000 rpm | |
| Fan drive type | Hydraulic | |
| Maximum torque | 221 kg•m | 1600 Ib•ft |
| Fuel system | Direct injection | |
| Governor | Electronically controlled | |
| Lubrication system: | ||
| Method | Gear pump, force-Iubric | |
| Filter | Full-flow type | |
| Air cleaner | Dry type with double elements and precleaner, plus dust indicator | |
| *EPA Tier 4 Final emissions certified |
| Torque converter | Three-elements, one-stage, two-phase | |
| Transmission | Full-automatic, planetary type | |
| Speed range | Seven speeds forward and one reverse | |
| Lockup clutch | Wet, single-disc clutch | |
| Forward | Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gear | |
| Reverse | Torque converter drive | |
| Shift control | Electronic shift control with automatic clutch modulation in all gear | |
| Maximum travel speed | 66 km/h |
41.0 mph |
| Rear Axle | Full-floating |
| Final drive type | Planetary gear |
| Ratios: | |
| Differential | 3.125 |
| Planetary | 5.211 |
| Independent, hydropneumatic suspension cylinder with fixed throttle to dampen vibration | ||
| Effective cylinder stroke (front suspension) | 250 mm | 9.8" |
| Rear axle oscillation: | ||
| Oil stopper | 6.8° | |
| Mechanical stopper | 8.1° |
| Type | Fully hydraulic power steering with two double-acting cylinders | |
| Supplementary steering | Automatic/manual controlled (meets ISO 5010, SAE J1511 and SAE J53) | |
| Minimum turning radius | 7.9 m |
25' 11" |
| Maximum steering angle | 38° |
| Type | Box-sectioned structure |
| Service brakes: | ||
| Front | Dry type, single disc type full hydraulic | |
| Rear | Wet type, multiple disc type, full hydraulic | |
| Parking brake | Dry type, single disc type, spring operated, hydraulic releasing type | |
| Retarder | Oil-cooled, multiple-disc type | |
| Secondary brake | Manual pedal operation When hydraulic pressure drops below the rated level, parking brake is automatically actuated |
|
| Brake surface: | ||
| Front | 968 cm2 | 150 in 2 |
| Rear | 50847 cm2 | 7,881 in 2 |
| Capacity: | ||
| Struck | 20 m3 | 26.2 yd3 |
| Heaped (2:1, SAE) | 27.3 m3 | 35.7 yd3 |
| Payload | 40.0 metric tons | 44.1 U.S. tons |
| Material (high tensile strength steel) | 160 kg/mm2 | 227,520 psi |
| Structure | V-shape body | |
| Material thickness: | ||
| Bottom | 19mm | 0.75" |
| Front | 16 mm | 0.63" |
| Sides | 14 mm | 0.55" |
| Target area (inside length x width) | 5640 mm x 3380 mm | 18'6" x 11'1" |
| Dumping angle | 48° | |
| Height at full dump | 8100mm | 26'7" |
| Heating | Exhaust heating |
| Hoist cylinder | Twin, 2-stage telescopic type | |
| Relief pressure | 210 kg/cm2 20.6 MPa |
2,990 psi |
| Hoist time | 10 sec |
| Empty weight | 37335 kg |
82,310 lbs |
| Max. gross vehicle weight: | ||
| Standard tire | 77415 kg | 170,671 lbs |
| Not to exceed max. gross vehicle weight, including options, fuel and payload | ||
| Weight distribution: | ||
| Empty: | ||
| Front axle | 54.2% | |
| Rear axles | 45.8% | |
| Loaded: | ||
| Front axle | 32.9% | |
| Rear axles | 67.1% |
| Standard tire | 21.00 R33 |
| Fuel tank | 456 ltr | 120.5 U.S. Gal |
| DEF tank | 34.7 ltr | 9.2 U.S. gal |
| Engine oil | 50 ltr | 13.2 U.S. Gal |
| Torque converter, transmission and retarder cooling | 112ltr | 29.6 U.S. Gal |
| Differentials (total) | 45 ltr | 11.9 U.S. Gal |
| Final drives (total) | 30 ltr | 7.9 U.S. G |
| Hydraulic system | 120 ltr | 31.7 U.S. Gal |
| Suspension (total) | 44.2 ltr | 11.7 U.S. Gal |
