• Engine

    Model Komatsu SAA6D125E-7
    Type Four-cycle, water-cooled, direct injection
    Aspiration Turbo-charged, after-cooled, cooled EGR
    Number of cylinders 6
    Bore x stroke 125 mm x 150 mm
    Displacement 11.0 ltr
    Horsepower, Gross - SAE J1995 248 kW / 332 HP
    Horsepower, Net - ISO 9249 / SAE J1349 242 kW / 324 HP
    Rated RPM 2000
    Fan drive method Hydraulic
    Emissions certification EPA Tier 4 Final
  • Axles

    Full time all wheel drive with Komatsu Traction Control System (K-TCS)

    Final drive type Planetary gear
    Differential 3.154
    Planetary 4.667
  • Body

    Capacity, struck 12.4 m3
    Capacity, heaped (2:1 SAE) 17.1 m3
    Payload 28000 kg
    Target area (inside length x width) 5250 mm x 2685 mm
    Heating Exhaust heating (option)
    Material 130 kg/mm2 high tensile strength steel
    Material thickness:
    Bottom 14 mm
    Front 8 mm
    Sides 12 mm
  • Brakes

    Service brakes Full-hydraulic control, oil-cooled multiple-disc type on front and centre axles
    Standard ISO3450
    Parking brake Spring applied, caliper disc type
    Retarder Front and centre axle brakes act as retarder
  • Cab


    ISO3449 (FOPS)

    ISO3471 (ROPS)

  • Hydraulic System

    Hoist cylinder Twin, telescopic type
    Relief pressure

    30.4 MPa

    310 kg/cm2

    Hoist time 10.5 sec
  • Main Frame


    Articulated, box-sectioned construction on front and rear

    Connected by strong torque tubes

  • Service Refill Capacities

    Fuel tank 388 ltr
    DEF tank 32.8 ltr
    Engine oil 35 ltr
    Torque converter, transmission and retarder cooling 80 ltr
    Differentials (total) 71.5 ltr
    Final drives (total) 23 ltr
    Hydraulic system 103 ltr
    Suspension (total) 10.4 ltr
  • Steering System

    Type Articulated type, fully hydraulic power steering with double-acting cylinders
    Supplementary steering Automatically actuated, electrically powered


    SAE J1511

    Minimum turning radius, wall to wall 8.10 m
    Articulation angle 45° each direction
  • Suspension System

    Front Hydro-pneumatic suspension
    Rear Combined hydro-pneumatic and rubber suspension system
  • Transmission

    Torque converter 3-elements, 1-stage, 2-phase
    Transmission Full-automatic, countershaft type
    Speed range 6 speeds forward and 2 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 and direct drive in all gear
    Shift control Electronic shift control with automatic clutch modulation in all gear
    Maximum travel speed 58.6 km/h
  • Tyres

    Standard tyre 23.5 R25
  • Weight (Approximate)

    Empty and Gross Weight:

    Empty weight 25395 kg
    Gross vehicle weight 53475 kg



    Weight Distribution:

    Front axle 58.9%
    Centre axle 22.5%
    Rear axle 18.6%
    Front axle 30.8%
    Centre axle 36.0%
    Rear axle 33.2%

HM300-5 Dump Trucks

Komatsu Rental’s 28 tonne capacity HM300-5 is powered by a new technology Komatsu engine and features our exclusive advanced truck transmission system, along with our hydraulic braking and retarder systems. These ensure unrivalled traction, braking power and safety in all types of hire applications. As with all our trucks, key components are designed and manufactured by Komatsu to work together in an integrated package. Rent with confidence with our KOMTRAX remote monitoring and location system, backed by our New Zealand-wide service and support network.

  • 242 kW / 324 HP
  • 53,475 kg
  • 28,000 kg

Please contact your nearest location for availability

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If you want to learn more contact us at 0800 566 2878 or enquire today.

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