HD405-8E0 Komatsu HD405-8E0 Specifications & Technical Data (2017—2021)

Modular Design

The wide core modular radiator prevents clogging even in a dusty work environment. To minimize manual cleaning, a reversible fan blows the dust out. The radiator core can be removed without the entire assembly, keeping repair costs down.

High performance Komatsu engine

Powerful and fuel-efficient, the Komatsu SAA6D140E-7 engine on the HD325/405-8 delivers 386 kW at 2.000 rpm, approx. a 5% increase compared to previous models. The improved acceleration and shorter cycle times guarantee a higher productivity. Power train components were redesigned to accommodate the increased power.

Komatsu fuel-saving technology

The variable displacement piston pumps reduce loss of Power Take-Off (PTO). Improvements in hydraulic pressure for transmission control increase energy savings, and the sophisticated electronic control of the engine operation helps to achieve optimal energy efficiency.

Automatic Idling Setting System (AISS)

This system facilitates quick engine warm-up and operator cab cooling/warming. When the system is “ON”, engine idle speed is kept at 1.100 rpm, and is lowered to 750 rpm as the coolant temperature rises. It automatically returns to 1.100 rpm when the coolant temperature drops.

High-Pressure Common Rail (HPCR)

To achieve complete fuel burn and lower exhaust emissions, the heavy-duty High-Pressure Common Rail fuel injection system is computer controlled to deliver a precise quantity of pressurised fuel into the redesigned engine combustion chamber by multiple injections.

Variable Geometry Turbo (VGT)

The VGT provides optimal airflow to the engine combustion chamber under all speed and load conditions. Exhaust gas is cleaner, fuel economy is improved while machine power and performance are maintained.

Komatsu Traction Control System (KTCS) (optional)

KTCS continuously monitors the rear wheels’ rotating speed and vehicle speed for slippage. In case of excessive wheel slip, the brake is automatically applied, and optimum tire traction is maintained. KTCS activates and deactivates automatically, improving productivity and tire life more than the conventional ASR system.

K-ATOMiCS transmission

K-ATOMiCS is an electronic shift control with automatic clutch modulation in all gears. It optimizes oil pressure for the clutch engagement and provides smoother shifting without torque off.

Engine

Komatsu SAA6D140E-7 turbocharged common rail direct injection diesel engineEU Stage V compliantRemote hydraulically driven, variable speed, reversible cooling fanAuto-deceleration functionAdjustable auto idle shutdownAlternator 90 A / 24 VStarter motor 1 x 11 kWBatteries 2 x 12VDry type air cleaner, double element with dust indicator

Other Equipment

Mud guardsEngine underguardPropeller shaft guards, front and rearTransmission underguardKomatsu Diesel Particulate Filter (KDPF) thermal guardFire prevention coversAuto Retard Speed Control (ARSC)Payload meter (PLM)Engine side coversLockable fuel cap and coversBrake cooling oil recovery tankElectric circuit breakers, 24 VFull automatic transmission with lock-up clutchModular core radiator systemEngine coolant and oilpan heaters

Komatsu Closed Crankcase Ventilation (KCCV)

Crankcase emissions (blow-by gas) are passed through a CCV filter. The oil mist trapped in the filter is returned back to the crankcase while the filtered gas is returned to the air intake.

Hydro-pneumatic suspension

Komatsu's hydro-pneumatic suspension gives the HD325/405-8 a smooth ride with reduced pitching and excellent driving comfort. Less shocks for the operator and for the machine components also mean less spilled material and increased durability, comfort and productivity.

Small turning radius

The MacPherson strut type front suspension has a special A-frame 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 this turning angle, the smaller the turning radius of the truck.

Brake cooling oil recovery tank

A tank is installed on each rear wheel to capture brake cooling oil in the event of leakage from the floating seal.

Supplementary steering and secondary brakes

Standard features on the HD325/405-8 include supplementary steering and secondary brakes. They help to guarantee safety in emergency situations.

Antilock brake system (ABS) (optional)

This system prevents the tires from locking when using the service brake and the retarder, thus minimizing skidding under slippery conditions.

Safety Equipment

Speed limiterBack-up alarmAutomatic supplementary steeringCoolant temperature alarm and lightBattery main switchHand rails for platformHorn, electricLadders, left and right hand sideFront brake cut-off systemProtective fence around engine hoodHeated rear-view mirrorsUnder-view mirrorsRear-view camera systemSecondary engine shutdown switch (inside cab)Hydraulically controlled wet multiple-disc brakes and retarderOverrun warning and prevention systemOverturn warning systemPedal-operated secondary brakeNeutral coast inhibitorEmergency engine stop switchStep lightOverload speed limiterAntilock brake system (ABS)Starter disconnect switchBody position alarm

Lighting System

Back-up lightHalogen headlights high and low beamSide lamps, left and rightFog lightsLED stop and tail lights, turn indicator lights with hazard functionBack work lights, left and right sideAdditional back-up light

High-rigidity frames

Cast-steel components are used in critical areas of the main frame where loads and shocks are most concentrated.

Robust dump body design

The standard dump body is made of high-tensile-strength steel for excellent rigidity and low maintenance cost. The V-shape and V-bottom design contribute to the structural strength. The side and bottom plates of the dump body are reinforced with lateral and longitudinal bolsters.

Body

Body exhaust heatingSpill guard, 300 mm, weld-on/bolt-on typeElectronic hoist control systemRock ejector barsSafety pinTire guard, rear, weld-on typeCab guard, left, bolt-on typePlatform guard, bolt-on typeSteel body linersSide extensions

Payload meter (PLM)

The PLM manages the payload of each hauling cycle and analyzes the truck’s production volume and working conditions for a specific period. Loaded weight is displayed in real time, both on the cab’s monitor and by external display lamps.

Wide and comfortable cab

The wide Komatsu SpaceCab™ with user-friendly controls provides a comfortable and safe work environment. A fully adjustable air-suspended seat dampens vibrations and reduces the fatigue of long shifts. Large front and electric side windows give a superior visibility and increased confidence.

Low-noise design

To reduce noise levels, the cab is mounted on viscous dampeners. Further noise reduction is achieved by the integrated cab floor: it makes the cab air-tight and seals off the engine compartment. A low-noise and sound-insulated muffler helps to bring sound levels way down.

Heated & ventilated air-suspended seat

A high comfort air-suspended seat, with lumbar support and multiple adjustments, ensures operator well-being during the entire work shift. It can be heated and ventilated, for an easy start on cold winter days and a comfortable ride on hot summer days.

Excellent all-round visibility

To keep the working area under control, a laminated-glass windshield, wide side windows, a standard rear-view camera and monitor, 3 additional under-view mirrors and 4 rear-view mirrors combine to minimise blind spots.

Adjustable auto idle shutdown

To reduce unnecessary fuel consumption and exhaust emissions, and for lower operating costs, the Komatsu auto idle shutdown automatically turns off the engine after it idles for a set period of time, which can be easily programmed from 5 to 60 minutes. An Eco-gauge and Eco guidance tips on the cab monitor further encourage efficient operations.

Lower operating costs

Komatsu ICT contributes to the reduction of operating costs by assisting to comfortably and efficiently manage operations. The monitor panel displays instant guidance messages to help promote energy saving, and the Eco-gauge indicates actual fuel consumption. To further improve savings, logs can be consulted for operations, Eco guidance and fuel consumption.

Service and Maintenance

Automatic greasing systemLarge LCD colour monitor panelKOMTRAX – Komatsu wireless monitoring systemKomatsu CARE™ – a maintenance program for Komatsu customersElectric refuelling pumpFuel tank with fast fill couplerCentralised greasing points (4)Battery jump startHydraulic oil filter clogging alarmPM service connectionsRadiator shutter, canvas typeCentralized quick connectors for oil changeWheel chocks