Komatsu Trucks HM300-3

HM300-3 Articulated Truck

An operator who likes cycle quickly through any ground conditions and do it in comfort will love the HM300-3. Komatsu Traction Control System coupled to the power of the Tier 4 interim Komatsu engine and two working modes give the operator the tools they'll need and to complete their job efficiently and profitably. A center located air suspension operator seat, a forward facing training seat, separate rear view monitor, and large LED multi-language monitor Provide the operator what he needs to operate productively in comfort for his full shift.

Engine
Model		Komatsu SAA6D125E-6*
Type		Water-cooled, 4-cycle
Aspiration		Komatsu variable geometry, turbo-charged, after-cooled, cooled EGR
Number of cylinders		6
Bore	4.92"	125 mm
Stroke	5.91"	150 mm
Piston displacement	674 in³	11.04 ltr
Horsepower :
SAE J1995	332 HP	248 kW
ISO 9249 / SAE J1349	324 HP	242 kW
Rated rpm		2000 rpm
Fan drive type		Hydraulic
Maximum torque	1239 ft lbs	1680 N 71 kg-m
Fuel system		Direct injection
Governor		Electronically controlled
Lubrication system:
Method		Gear pump, force-lubrication
Filter		Full-flow type
*EPA Tier 4 Interim and EU stage 3B 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	36.4 mph	58.6 km/h

Axles
Full time all wheel drive
Final drive type	Planetary gear
Ratios:
Differential	3.154
Planetary	4.667

Suspension System
Front	Hydro-pneumatic suspension
Rear	Combined hydro-pneumatic and rubber suspension system

Steering System
Type		Articulated type, fully hydraulic power steering with two double-acting cylinders
Supplementary steering		Automatically actuated, electrically powered
Minimum turning radius, wall to wall	26'7"	8.10 m
Articulation angle		45° each direction

Cab
Standard	ISO3449 (FOPS) ISO3471 (ROPS)

Brakes
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

Main Frame
Type	Articulated type, box-sectioned construction on front and rear Connected by strong torque tubes.

Body
Capacity:
Struck16.9	17.5 yd³	13.4 m³
Heaped (2:1, SAE)	22.4 yd³	17.1 m³
Payload	30.9 U.S. tons	28.0 metric tons
Material - high tensile strength steel	184,925 psi	130 kg/mm²
Material thickness:
Bottom	0.55"	14 mm
Front	0.31"	8 mm
Sides	0.47"	12 mm
Target area - (inside length x width)	17'3" x 8'10"	5250 mm x 2685 mm
Heating		Exhaust heating (optional)

Hydraulic System
Hoist cylinder		Twin, telescopic type
Relief pressure	4264 psi	300 kg/cm² / 29.4 Mpa
Hoist time		10.5 sec

Weight (approximate)
Empty weight	54,917 lbs	24,910 kg
Gross vehicle weight	116,823 lbs	52,990 kg
Weight distribution:
Empty:
Front axle		57.0%
Center axle		23.0%
Rear axles		20.0%
Loaded:
Front axle		29.0%
Center axle		36.5%
Rear axles		34.5%

Tires
Standard tire	23.5 R25

Service Refill Capacities
Fuel tank	102.6 U.S. gal	388.3 L
Engine oil	9.2 U.S. gal	35 L
Torque converter, transmission and retarder cooling	25.9 U.S. gal	98 L
Differentials (total)	18.9 U.S. gal	71.5 L
Final drives (total)	6.1 U.S. gal	23 L
Hydraulic system	27.2 U.S. gal	103 L
Suspension (total)	2.7 U.S. gal	10.4 L