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Dump trucks

HD405-8

Mechanical rigid trucks

  • Engine power (HP) 514
  • Engine power (kW) 383
  • Operating weight (kg) 77415
  • Operating weight (lbs) 170666
  • Payload capacity (kg) 40000
  • Payload capacity (lbs) 88185

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Now with low-emission Tier 4 Final-compliant engines, our 40 tonne capacity HD405-8 truck is ideal for quarry, construction and small-scale mining operations. Advanced transmission and braking systems ensure optimum traction and the industry’s highest safety standards. 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 remote monitoring and location system, backed by our New Zealand-wide service and support network.

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    Features and benefits

    Selectable economy and power working modes

    Selectable economy and power working modes

    Selectable working modes for Economy and Power allows machine performance to be optimised based on demand and operating conditions

    Auto idle shutdown

    Auto idle shutdown

    In order to reduce unwanted idle time, Komatsu machines feature Komatsu Auto Idle Shutdown. This function will shut the engine off and apply the parking brake and hydraulic lock after a preset idle time limit

    Komatsu advanced transmission with optimum modulation control system

    Komatsu advanced transmission with optimum modulation control system

    Fully automatic control selects the optimum gear, according to vehicle and engine speed. The shift point automatically changes, depending on the acceleration of the vehicle. This avoids unnecessary fuel consumption


    Specifications

    Metric Imperial (US)
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    • Hoist cylinder type: Twin, 2-stage telescopic type
    • Relief pressure (psi): 2990
    • Relief pressure (kg/cm^2 / Mpa): 210 / 20.6

    • Material thickness

      • Front (mm): 16
      • Bottom (in): 0.75
      • Bottom (mm): 19
      • Sides (mm): 14
      • Sides (in): 0.55
      • Target area (ft x in): 18 ft 6.0 in x 11 ft 1.1 in
      • Target area (mm x mm): 5640 x 3380
      • Heating: Exhaust heating (option)

    • Capacity

      • Struck 16.9 Capacity (m^3): 20
      • Struck 16.9 capacity (yd^3): 26.2
      • Material (psi): 227,520
      • Material (kg/mm^2): 160
      • Heaped 2:1 SAE Capacity (m^3): 24
      • Heaped 2:1 SAE Capacity (yd^3): 31.39

    • Standard tire: 21.00 R33

    • Independent hydropneumatic suspension cylinder: Fixed throttle to dampen vibration
    • Effective cylinder stroke (front suspension) (in): 9.84
    • Effective cylinder stroke (front suspension) (mm): 250
    • Rear axle oscillation oil stopper (degree): 6.8
    • Rear axle oscillation mechanical stopper (degree): 8.1

    • Rear axle oscillation

      • Mechanical stopper (degrees): 8.1
      • Oil stopper (degrees): 6.8

    • Nominal payload (metric tons): 40 (standard body is unlined)
    • Nominal payload (short tons): 44.1 (standard body is unlined)

    • Piston displacement (in^3): 930
    • Piston displacement (L): 15.24
    • Engine Model: Komatsu SAA6D140E-7
    • Engine type: Four-cycle, water-cooled, direct injection
    • Aspiration: Turbo-charged, after-cooled, cooled EGR
    • Bore (mm): 140
    • Bore (in): 5.5
    • Stroke (mm): 165
    • Stroke (in): 6.5

    • Lubrication system

      • Method: Gear pump, force-Iubric
      • Filter: Full-flow type
      • Air cleaner: Dry type with double elements and precleaner, plus dust indicator

    • Horsepower

      • SAEJ1995 - Gross (kW): 386
      • SAEJ1995 - Gross (HP): 518
      • Fan drive type: Hydraulic
      • Fuel system: Direct injection
      • Governor: Electronically controlled
      • ISO 9249 / SAE J1349 - Net (HP): 514 @ 2,000 rpm
      • ISO 9249 / SAE J1349 - Gross (kW): 383 @ 2,000 rpm
      • Maximum torque (ft-lbs): 1600
      • Maximum torque (kg-m): 221
      • Rated RPM: 2000

    • Brakes standard: ISO 3450, SAE 1473
    • Front service brakes: Dry type, single disc type full hydraulic
    • Front brake surface (in^2): 150
    • Front brake surface (cm^2): 968
    • Rear brake surface (in^2): 7881
    • Rear brake surface (cm^2): 50847

    • Service brakes

      • Parking brake type: Dry type, single disc type, spring operated, hydraulic releasing type
      • Retarder: Oil cooled, multiple-disc rear brakes act as retarder
      • Rear service brakes: Wet type, multiple disc type, full hydraulic
      • Service parking brakes: Dry type, single disc type, spring operated, hydraulic releasing type
      • Service retarder brakes: Oil-cooled, multiple-disc type
      • Secondary service brakes: Manual pedal operation when hydraulic pressure drops below the rated level, parking brake is automatically actuated

    • Torque converter: 3-elements, 1-stage, 2-phase
    • Transmission: Full-automatic, planetary type
    • Speed range: 7 speeds forward and 1 reverse
    • Lockup clutch: Wet, single-disc clutch
    • Forward: Torque converter drive in 1st gear, direct drive in 1st lockup and all higher gears
    • Reverse: Torque converter drive
    • Shift control: Electronic shift control with automatic clutch modulation in all gears
    • Maximum travel speed (kph): 66
    • Maximum travel speed (mph): 41.01

    • Fuel tank (L): 456
    • Fuel tank (US gal): 120.5
    • Hydraulic system (US gal): 31.7
    • Hydraulic system (L): 120
    • DEF tank (US gal): 9.17
    • DEF tank (L): 34.7
    • Engine oil (US gal): 13.21
    • Engine oil (L): 50
    • Torque converter transmission retarder (US gal): 29.6
    • Torque converter transmission retarder (L): 112
    • Differentials (L): 45
    • Differentials (US gal): 11.89
    • Final drive (L): 30
    • Final drive (US gal): 7.93
    • Suspension (US gal): 11.67
    • Suspension (L): 44.2

    • Minimum turning radius wall to wall (m): 7.9
    • Minimum turning radius wall to wall (ft): 25 ft. 11 in
    • Steering system type: Fully hydraulic power steering with two double-acting cylinders
    • Supplementary steering: Automatic/manual controlled (meets ISO5010, SAEJ1511 and SAEJ53)
    • Standard: ISO3471, SAEJ1040-1988c (ROPS)
    • Maximum steering angle (degrees): 38°
    • Minimum turning radius, wall to wall (m): 7.9
    • Minimum turning radius, wall to wall (ft): 26

    • Rear axle: Full-floating
    • Final drive type: Planetary gear
    • Differential ratio: 3.125
    • Planetary ratio: 5.211

    • Truck frame type: Box-sectioned structure

    • Type

      • Articulated type: Box-sectioned structure

    • Empty weight (kg): 37335
    • Empty weight (lbs): 82312
    • Gross vehicle weight (lbs): 170651
    • Gross vehicle weight (kg): 77415

      • Loaded

        • Front axle - loaded (%): 32.9
        • Rear axles - loaded (%): 67.1

        Empty

        • Front axle - empty (%): 54.2
        • Rear axles - empty (%): 45.8

    • Dimensions comply with: ISO 3471 and SAE J1040-1988c ROPS (Roll-Over Protective Structure) standards