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W

ALK

-A

ROUND

HM300

-2R

ARTICULATED DUMP TRUCK

HM300

-2R

A

R T I C U L A T E D

D

U M P

T

R U C K

3

Hydro-pneumatic Suspension
for all terrains.  

The hydro-pneumatic suspension in both
front and rear suspensions assures a
comfortable ride even over rough terrain.

2

Differential locks provide excellent
traction in rough terrain. 

The oil-cooled multiple-disc interaxle lock  can
be turned on and off during travel. In addition,
the limited slip differentials prevent the tires
on either side from slipping on soft ground for
maximum traction.

Tiltable cab 

can be tilted rearward

32 degrees to provide easy service

.

Komatsu designed, electronically controlled
transmission for a comfortable ride. 

F6-R2 counter-shaft type transmission with K-ATOMiCS
(Komatsu Advanced Transmission with Optimum
Modulation Control System).Transmission shift hold 
button optimizes the operator control

Wide, spacious cab with 
excellent visibility

The wide cab offers a comfortable operator
and passenger environment

Viscous mounts support the cab while
absorbing vibrations and noise

Low-noise cab through improved sealing
with integrated floor 
Interior noise level 76 dB(A)

Additional front under view mirrors 
provide superior visibility

Air suspension seat is standard

Power window (L.H)

High capacity, reliable, continuously
cooled, wet type multiple-disc brakes and
retarder

Fully hydraulic controlled wet multiple-disc brake

Retarder Absorbing Capacity (continuous descent)

370 kW

496 HP

Easy-to-Load Body

Heaped capacity 

16.6 m

3

21.7 yd

3

Low loading height 

2790 mm

9'2"

High strength body constructed of thick
wear-resistant steel having 400 Brinell
hardness

High performance and Komatsu
SAA6D125E-5 engine

Gross horsepower 

254 kW

340HP

Engine power mode selection system realizes both
greater productivity and improved fuel economy

Higher engine output and torque improve produc-
tivity in all applications

Fully hydraulic articulated steering

Light and easy operation

Minimum turning radius 

7.96 m

26'1"

The HM300-2R offers all around maximum productivity with faster travel speed and many
features that enhance efficiency, while reducing maintenance costs.  From rough terrain
construction sites to landfills - the HM300-2R has the competitive edge.

GROSS HORSEPOWER

254 kW

340 HP @ 2000 rpm

NET HORSEPOWER

246 kW

329 HP @ 2000 rpm

MAXIMUM GVW

51420 kg

113,360 lb

Building on the technology and expertise Komatsu has
accumulated since its establishment in 1921, GALEO
presents customers worldwide with a strong, distinctive
image of technological innovation and exceptional value.
The GALEO brand will be employed for Komatsu’s full
lineup of advanced construction and mining equipment.
Designed with high productivity, safety and environmental
considerations in mind, the machines in this line reflect
Komatsu’s commitment to contributing to the creation of 
a better world.

G

enuine 

A

nswers for 

L

and & 

E

nvironment 

O

ptimization

Photo may include optional equipment.

Summary of Contents for HM300-2R

Page 1: ... com Printed in Japan 200705 IP AD 15 CEN00206 01 Materials and specifications are subject to change without notice is a trademark of Komatsu Ltd Japan Standard equipment may vary for each country and this specification sheet may contain attachments and optional equipment that are not available in your area Please consult your Komatsu distributor for detailed information ...

Page 2: ...ontrolled wet multiple disc brake Retarder Absorbing Capacity continuous descent 370 kW 496 HP Easy to Load Body Heaped capacity 16 6 m3 21 7 yd3 Low loading height 2790 mm 9 2 High strength body constructed of thick wear resistant steel having 400 Brinell hardness High performance and Komatsu SAA6D125E 5 engine Gross horsepower 254 kW 340HP Engine power mode selection system realizes both greater...

Page 3: ...ximizes power train life 5 HM300 1 ARTICULATED DUMP TRUCK 4 The combination of high travel speeds and an efficient engine delivers maximum productivity at the lowest cost Komatsu Technology Komatsu develops and produces all major components such as engines electronics and hydraulic components in house With this Komatsu Technology and adding customer feedback Komatsu is achieving great advancement ...

Page 4: ...uiet and comfortable operator environment Wide Spacious Cab with Excellent Visibility The wide cab provides a comfortable space for the operator and a full size buddy seat Large electrically operated window and the operator s seat positioned to the left side ensures superior visibility Ergonomically Designed Cab The ergonomically designed operator s compartment makes it very easy and comfortable f...

Page 5: ...ype Retarder Front and center axle brakes act as retarder WEIGHT APPROXIMATE Empty weight 24 040 kg 53 000 lb Gross vehicle weight 51 420 kg 113 360 lb Weight distribution Empty Front axle 55 8 Center axle 23 6 Rear axle 20 6 Loaded Front axle 30 3 Center axle 35 5 Rear axle 34 2 BODY Capacity Struck 12 9 m3 16 9 yd3 Heaped 2 1 SAE 16 6 m3 21 7 yd3 Payload 27 3 metric tons 30 1 U S tons Material 1...

Page 6: ...d monitor TIRES 30 65 R25 750 65 R25 OTHER Alternator 75A 24V Auto Retarder with Accelerator Control ARAC Fire extinguisher Gas charge tool Spare parts for first service Tool kit Vandalism protection ENGINE Alternator 50A 24V Batteries 2 x 12V 136Ah Engine Komatsu SAA6D125E 5 Exhaust muffler Starting motor 1 x 7 5 kW CAB Air conditioner Ashtray Cigarette lighter Cup holder Electronic maintenance d...

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