Komatsu HM300-5 ARTICULATED TRUCKS
Product Feature
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
Power mode
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.
Economy mode
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.
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.
ECO Guidance
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
ECO Gauge
The ECO gauge indicates a momentary fuel consumption rate during 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.
Engine
Model | Komatsu SAA6D125E-7* | |
Type | Water-cooled, 4-cycle | |
Aspiration | Turbo-charged, after-cooled, cooled EGR | |
Number of cylinders | 6 | |
Bore | 125 mm | 4.92" |
Stroke | 150 mm | 5.91" |
Piston displacement | 11.0 ltr | 671 in3 |
Horsepower : | ||
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 | |
Governor | Electronically controlled | |
Lubrication system: | ||
Method | Gear pump, force-lubrication | |
Filter | Full-flow type | |
Air cleaner | Dry type with double elements and precleaner, plus dust indicator | |
*EPA Tier 4 Final emissions certified |
Transmissions
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 |
Axles
Full time all wheel drive with Komatsu Traction Control System (K-TCS)
Product Parameter
Model | Komatsu SAA6D125E-7* | |
Type | Water-cooled, 4-cycle | |
Aspiration | Turbo-charged, after-cooled, cooled EGR | |
Number of cylinders | 6 | |
Bore | 125 mm | 4.92" |
Stroke | 150 mm | 5.91" |
Piston displacement | 11.0 ltr | 671 in3 |
Horsepower : | ||
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 | |
Governor | Electronically controlled | |
Lubrication system: | ||
Method | Gear pump, force-lubrication | |
Filter | Full-flow type | |
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 |
Final drive type | Planetary gear |
Ratios: | |
Differential | 3.154 |
Planetary | 4.667 |
Front | Hydro-pneumatic suspension |
Rear | Combined hydro-pneumatic and rubber suspension system |
Type | |
Articulated type, fully hydraulic power steering with two double-acting cylinders |
Supplementary steering | |
Automatically actuated, electrically powered |
Standard | ISO5010, SAE J1511 | |
Minimum turning radius, wall to wall | 8.10 m | 26'7" |
Articulation angle | |
45° each direction |
Standard | ISO3449 (FOPS) ISO3471 (ROPS) |
Service brakes | Full-hydraulic control, oil-cooled multiple-disc type on front and center axles |
Standard | ISO3450 |
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. |
Capacity: | ||
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 |
Material thickness: | ||
Bottom | 14 mm | 0.55" |
Front | 8 mm | 0.31" |
Sides | 12 mm | 0.47" |
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 |
117,892 lbs |
Weight distribution: | ||
Empty: | ||
Front axle | 58.9% | |
Center axle | 22.5% | |
Rear axles | 18.6% | |
Loaded: | ||
Front axle | 30.8% | |
Center axle | 36.0% | |
Rear axles | 33.2% |
Standard tire | 23.5 R25 |
Fuel tank | 388 ltr | 102.5 U.S. gal |
DEF tank |
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 |