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Dump Truck | ADT | HM300-2

Supplier: Komatsu

Komatsu articulated dump trucks are the most rugged on the market, having been designed to bring rigid frame strength and reliability to the ADT sector.



  • Proven design & technology from RDT's
  • Environmental compliance
    • Tier 3 with cooled EGR
  • Efficient production achieved through K-ATOMiCS transmission
    • Smooth changing between gears
    • Transmission shift hold button
    • Fast maximum speed
    • Excellent traction achieved by
    • Full time 6 wheel drive with LSD’s
    • Interaxle can be engaged during the cycle (no slowing down)
    • Wide tyre gauge and long wheel base
    • Good lateral stability
    • Better load distribution
  • Reduced vibration and noise from
    • Front hydro-pneumatic suspension with trailing arm
    • Rear hydro-pneumatic suspension with rubber
  • Efficient braking from wet disc, maintenance free service brakes
  • Increased safety provided by
    • Large retarding force through front & centre axles
    • Dual door cab
    • Excellent visibility plan and control layout
  •  Reduce maintenance costs
    • Strong chassis (same as HM400)
    • Maintenance free hitch
    • Centralised greasing and tiltable cab for easy access
  • Quick body raising from two stage hoist cylinders, coupled with strong leverage position
  • Factory fitted tail gate



Horsepower, - Gross SAE J1995 (kW): 254
Horsepower, Net - ISO 9249 (kW): 246
Horsepower, Net - SAE J13749 (kW): 246
Rated RPM: 2000
Fan drive method: Mechanical
Displacement (litre): 11.04
Number of cylinders: 6


Gross operating weight (kg): 51420
Empty weight (kg): 24040
Weight distribution, empty - F/R (%): 55.8 / 44.2
Weight distribution, loaded - F/R (%): 30.3 / 69.7

Operation / Application

Payload (kg): 27.3
Body capacity, struck (m3): 12.9
Body capacity, heaped SAE 2:1 (m3): 11.6
Body type - Shape / Ejector: Standard
Standard thickness - floor / front / sides (mm): 14 / 8 / 12
Loading height (mm): 2970
Full dump height (mm): 6430
Dump angle (degrees): 70
Heated body, standard - No
Related information: high strength, easy to load body constructed from thick wear resistant steel and including a factory fitted tailgate.


Transmission type: Auto PS
Number of speeds, Fwd / Rev: 6/2
Maximum speed, Fwd / Rev (km/h): 58.6
Differential type: Limited Slip
Brake type: Hydraulic with retarder
Suspension system: F: Hydro-pneumatic, R: Combined hydro-pneumatic and rubber
Related information: K-ATOMiCS (Komatsu Advanced Transmission with Optimum Modulation Control System) ensures a smooth ride over the hrashest terrain. Additional driveline features include full hydraulic, oil cooled multiple disc brakes.


Standard fitment size: 23.5 R25

Hydraulic System

Hoist cylinder type: Twin, 2-Stage telescopic
Hoist time (seconds): 12


Length, overall (mm): 10440
Width over tyres (mm): 2900
Tyre guage (mm): 2280
height to top of cab (mm): 3520
Ground clearance (mm): 510
Turning radius - outside minimum (mm): 7960

Service information

Fuel tank (litre): 384

Communication systems

Internal maintenance monitoring: Yes
KOMTRAX Satellite tracking: Yes