- 117,892 lbs Max Gross Vehicle Weight
- 332 @2000 rpm Gross HP
- 30.9 U.S. tons Capacity
The 30.9 ton capacity HM300-5 is powered by a Tier 4 final Komatsu engine. A Komatsu Traction Control System along with two working modes and a standard payload meter (PLM) provide the operator with the tools needed to complete the job efficiently and profitably even in the most severe underfoot conditions. A heated, center located air suspension operator seat, a forward facing training seat, separate rear view monitor, and large LED multi-language monitor ensure the operator is working productively in comfort throughout a full shift.
Tier 4 Final Engine
The Komatsu SAA6D125E-7 engine is EPA Tier 4 Final emissions certified and provides exceptional performance while reducing fuel consumption. Based on Komatsu proprietary technologies developed over many years, this new diesel engine reduces nitrogen oxides (NOx) by more than 80% when compared to Tier 4 interim levels. Through the in-house development and production of engines, electronics, and hydraulic components, Komatsu has achieved great advancements in technology, providing high levels of performance and efficiency in virtually all applications.
Komatsu Auto Idle Shutdown
Komatsu auto idle shutdown automatically shuts the engine down after idling for a set period of time to reduce unnecessary fuel consumption and exhaust emissions. The amount of time before the engine is shutdown can be easily programmed from 5 to 60 minutes.
Selectable Working Modes
Appropriate for higher production jobs and uphill hauling applications. The power mode increases the engine maximum output and raises the upshift and downshift engine speeds during operation.
Appropriate for lighter work on flat ground. The economy mode lowers the engine maximum output along with lowering the upshift and downshift engine speeds during operation.
Large Capacity Body
The HM300-5 has a heaped body capacity of 17.1 m3 22.4 yd3. The low loading height of 2830 mm 9'3" enables easy loading. The body is built of high strength, wear-resistant steel with a Brinell hardness of 400 and the body shape provides excellent load stability. HM300’s frame employs a rigid box structure utilizing high tensile strength steel, and is rugged enough for the toughest jobs.
Komatsu Designed Electronically Controlled Countershaft Transmission
The Komatsu designed electronically controlled transmission called K-ATOMiCS has been a success in Komatsu’s dump trucks. The electronic clutch modulation system ensures proper clutch pressure when the clutch is engaged. The total control system controls both the engine and the transmission by monitoring the vehicle conditions. This high technology system assures smooth shifts with minimal shock and maximizes the power train life.
Komatsu Traction Control System (KTCS)
The KTCS was developed by Komatsu to allow for maximum
machine performance in soft and slippery ground conditions.
Komatsu leveraged its prior experience with the traction control
systems in bulldozers and rigid dump trucks to develop this
system for use in articulated dump trucks.
The KTCS monitors the wheel speeds on the front and middle axles. If the system detects wheel slip, it will automatically engage the inter axle lock to improve machine performance. If the machine continues to detect wheel slip it will brake the wheel that slip was detected on. It will continually monitor the wheel speeds and engage the brakes as necessary.
KTCS is automatically activated and deactivated. The inter-axle lock can also be engaged by the operator via a rocker switch located on the dash panel.
Payload Meter (PLM)
A payload meter is included as standard equipment on the new HM300-5. The payload tonnage is displayed on the Machine Monitor and is visible to the haul truck operator. An external display lamp mounted on the top of the cab communicates payload status to the loader operator. The external display lamp indicator lights are visible from both sides of the truck so it is always in sight of the loader operator.
PLM data is transmitted by KOMTRAX and can be accessed via the internet. Detailed data is stored in the truck’s controller and can be directly downloaded from the truck to a PC.
Rear View Monitoring System
The rear view camera and monitor are equipped as standard.
Hydraulically Controlled Wet Multiple-disc Brakes and Retarder
Wet multiple-disc brakes with proven performance in other Komatsu dump trucks are tailored for use in the HM300-5. The large-capacity, continuously cooled, wet-multiple disc brakes also function as a highly responsive retarder which gives the operator greater confidence at higher speeds when travelling downhill.
Retarder Absorbing Capacity (continuous descent): 392 kW 526 HP
The monitor panel provides guidance to the operator to
help promote energy saving operation.
For example, if the operator stops the machine for a long
period of time with the engine idling, the message “Avoid
excessive engine idling” is displayed on the monitor panel.
The ECO guidance function displays six (6) messages:
• Avoid Excessive Engine Idling
• Release the Hoist Lever
• Operating the Accelerator Pedal with Brake Actuated Lowers Fuel Economy
• Shift Up
• Avoid Operating the Accelerator Pedal with the Body Moving Down
• Avoid Hard Use of Steering
The ECO gauge indicates a momentary fuel consumption rate during operation.
Operating the machine by keeping the gauge within the green zone leads to energy-saving operation.
Ground Access to Filters
The oil filters of the transmission and the brake systems can be serviced from ground level.
Easy Access DEF Tank
Located to the rear of the fuel tank, and easy to access.
Tiltable Cab with Power Tilt
The cab can be tilted rearward by 29 degrees to provide easy access to the engine and transmission for service. Electrically-operated cab tilt is standard.
|Aspiration||Turbo-charged, after-cooled, cooled EGR|
|Number of cylinders||6|
|Piston displacement||11.0 ltr||671 in3|
|SAE J1995||248 kW||332 HP|
|ISO 9249 / SAE J1349||242 kW||324 HP|
|Rated rpm||2000 rpm|
|Fan drive type||Hydraulic driven|
|Maximum torque||171 kg•m||1,237 ft lbs|
|Fuel system||Direct injection|
|Method||Gear pump, force-lubrication|
|Air cleaner||Dry type with double elements and precleaner, plus dust indicator|
|*EPA Tier 4 Final emissions certified|
|Torque converter||3-elements, 1-stage, 2-phase|
|Transmission||Full-automatic, counter-shaft 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||36.4 mph|
Full time all wheel drive with Komatsu Traction Control System (K-TCS)
|Final drive type||Planetary gear|
|Rear||Combined hydro-pneumatic and rubber suspension system|
||Articulated type, fully hydraulic power steering with two double-acting cylinders|
||Automatically actuated, electrically powered|
|Standard||ISO5010, SAE J1511|
|Minimum turning radius, wall to wall||8.10 m||26'7"|
||45° each direction|
|Service brakes||Full-hydraulic control, oil-cooled multiple-disc type on front and center axles|
|Parking brake||Spring applied, caliper disc type|
|Retarder||Front and center axle brakes act as retarder|
|Type||Articulated type, box-sectioned construction on front and rear Connected by strong torque tubes.|
|Struck16.9||13.4 m3||17.5 yd3|
|Heaped (2:1, SAE)||17.1 m3||22.4 yd3|
|Payload||28.0 metric tons||30.9 U.S. tons|
|Material - high tensile strength steel||130 kg/mm2||184,925 psi|
|Target area - (inside length x width)||5250 mm x 2685 mm||17'3" x 8'10"|
|Heating||Exhaust heating (optional)|
|Hoist cylinder||Twin, telescopic type|
|Relief pressure||300 kg/cm2 / 29.4 Mpa||4264 psi|
|Hoist time||10.5 sec|
|Empty weight||25,395 kg||55,986 lbs|
|Gross vehicle weight||53,475 kg
|Standard tire||23.5 R25|
Service Refill Capacities
|Fuel tank||388 ltr||102.5 U.S. gal|
||32.8 ltr||8.7 U.S. gal|
|Engine oil||35 ltr
||9.2 U.S. gal|
|Torque converter, transmission and retarder cooling||80 ltr
||21.1 U.S. gal|
|Differentials (total)||71.5 ltr
||18.9 U.S. gal|
|Final drives (total)||23 ltr||6.1 U.S. gal|
|Hydraulic system||103 ltr||27.2 U.S. gal|
|Suspension (total)||10.4 ltr||2.7 U.S. gal|
- Air cleaner, dry type, double elements
- Air cleaner dust level indicator
- Air pre-cleaner
- Alternator, 90 A, 24 V
- Alarm, backup
- Anti-slip material on fenders
- Auxiliary steering system, automatic, electric
- Back-up lamp
- Batteries, 2 x 12 V/200 Ah
- Battery disconnect
- Centralized greasing
- Color rear view camera and monitor
- Coolant temperature alarm and lamp
- Dump counter
- ECO Guidance
- Electronic hoist control system
- Electric circuit breaker, 24 V
- Electric priming fuel pump
- Electronic pump for hydraulic tilt cab
- Engine, Komatsu SAA6D125E-7
- Engine underguard
- Engine shutdown secondary switch
- Front view mirror
- Full-automatic F6-R2 transmission with lock-up torque converter & K-ATOMiC shift control
- Hazard lamps
- Hand rails for platform and ladder
- Headlights, front (high and low)
- Heated rearview mirrors, LH and RH side
- Horn, electric
- Hydraulic driven cooling fan, for after cooler
- Hydraulic driven cooling fan, for radiator
- Hydropneumatic suspension, front and rear
- Interaxle lockup, wet disc clutch type, controlled by KTCS
- Komatsu Traction Control System (KTCS)
- Komatsu Diesel Particulate Filter (KDPF)
- Komatsu Variable Geometry Turbocharger (KVGT)
- Ladders LH side
- Mud guards
- Parking brake
- Payload Meter (PLM)
- Protective grille for rear window
- Propeller shaft guards, front and rear
- Provision for tailgate
- Retarder/brake system
- Rims for 23.5 x 25, set of 6
- ROPS/FOPS cab Level 2
--2 x DC12V electrical outlets
--12V cigarette lighter
--Color LCD/TFT multi-monitor
--Operator seat, reclining, air suspension type with 3-point retractable seat belt, 76 mm 3" width lap belt, 50 mm 2" width shoulder belt
--Passenger seat with 2-point retractable seat belt, 76 mm 3" width
--Power window (LH)
--Space for lunch box
--Sliding window (RH)
--Steering wheel, tilt and telescopic
--Sun visor, front window
--Tiltable ROPS cab with FOPS, sound suppression type
--Windshield washer and wiper, front and rear
- Selective Catalytic Reduction (SCR) system
- Starting motor, 7.5 kW
- Steering joint locking assembly
- Step (right side)
- Stop, tail, and turn signal lamps (LED)
- Tool box
- Transmission underguard
- Two mode engine power system (Economy and Power)
- Work lamps, LH and RH side
- 23.5 x 25 tires
- 750/65 R25 rims
- 750/65 R25 tires
- Body, 17.1 m3 22.4 yd3
- Body, exhaust heated, 17.1 m3 22.4 yd3
- Tail gate, scissors type