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Komatsu Designed Interaxle and Differential

Locking Systems

The full-time six-wheel drive system reduces slippage.

A wet multiple-disk interaxle clutch also locks the

three axles in unison for greater traction. The interaxle

lock and differential locks can be switched on and off

while the truck is travelling, thereby boosting produc-

tivity. In addition, the differential lock switch, which is

a three position switch, can lock up the rear axle dif-

ferentials only, or all axles for maximum performance

in the worst conditions.

Hydraulically Controlled Wet Multiple-Disc Brakes

and Retarder

Wet multiple-disc brakes have been proven on Komatsu

dump trucks and wheel loaders ensuring highly reliable and

stable brake performance. The large-capacity, continuously

cooled,wet-multiple disc brakes also function as a highly

responsive retarder which gives the operator greater confi-

dence at higher speeds when travelling downhill.

Retarder Absorbing Capacity (continuous descent):

444 kW

595 HP

Large Capacity Body and Box

Section Frame Structure

The HM350 has the large heaped

capacity of 

19.8 m

3

25.9yd

3

body.

The low loading height of 

2975 mm

9'9"

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 sta-

bility. Rugged enough for the toughest

jobs, the HM350’s frame is designed

using a rigid box structure with connect-

ing torque tubes made of high strength

low alloy steel.

Articulated Steering

Fully hydraulic articulated

steering offers low-effort

operating performance and

maneuverability. A mini-

mum turning radius of only

8.6 m

28’3” provides ability 

to work in tight areas.

Komatsu Designed Electronically Controlled

Countershaft Transmission

The Komatsu designed Electronically Controlled Transmission

called K-ATOMiCS has been a success in Komatsu’s rigid 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 transmission by monitoring

the vehicle conditions. This high technology system assures

smooth shifts without shock and maximizes power train life.

5

HM350-1

ARTICULATED DUMP TRUCK

4

The combination of high travel speeds and an efficient engine with low emissions
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 

in technology.

To achieve both high levels of productivity and economical

performance, Komatsu has developed the main compo-

nents with a total control system.

The result is a new generation of high performance and

environment friendly machines.

High Performance Komatsu SAA6D140E-5 Engine

This engine delivers faster acceleration and higher

travel speeds with high horsepower per ton in its class.

Advanced technology, such as Common Rail Injection sys-

tem (CRI), air to air aftercooler, and an efficient turbo-charg-

er enables the engine to meet the North American EPA Tier

3 and EU stage 3A emission regulations. High torque at low

speed, impressive acceleration, and low fuel consumption

ensure maximum productivity.

Engine Power Mode Selection System

The system allows selection of the appropriate mode

between two modes <Power mode > or <Economy mode>

according to each working condition. The mode is easily

selected with a switch in the operator’s cab.

Power mode

Great productivity can be attained by taking a full advantage

of high output power. It is appropriate for job sites where

larger production at uphill-hauling is required.

Economy mode

Engine speeds of the maximum output, downshift, and

upshift are set to a lower level. It is appropriate for light

work on the flat ground.

4.2 m 

13'9"

8.6 m 

28'3"

Hydro-pneumatic Suspension

The hydro-pneumatic suspension has been proven on Komatsu’s rigid dump trucks. The front

axle hydro-pneumatic suspension employs "De Dion" type design, allowing the machine to ride

more smoothly over bumps. The rear-axles are mounted on a dynamic equalizer structure

equipped with hydro-pneumatic suspension. The entire vehicle’s suspension delivers a comfort-

able ride and maximizes productivity.

P

RODUCTIVITY

F

EATURES

HM350

-2

ARTICULATED DUMP TRUCK

HM350

-2

A

R T I C U L A T E D

D

U M P

T

R U C K

Summary of Contents for HM350-2

Page 1: ... com Printed in Japan 200702 IP AD 05 CEN00082 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: ...W 595 HP Easy to load body Heaped capacity 19 8 m3 25 9 yd3 Low loading height 2975 mm 9 9 High strength body constructed of thick wear resistant steel having 400 Brinell hardness High performance and environment friendly SAA6D140E 5 ecot3 engine Gross horsepower 304 kW 408 HP Meets North American EPA Tier 3 and EU Stage 3A emission regulations for 2006 Engine power mode selection system realizes ...

Page 3: ...gy system assures smooth shifts without shock and maximizes power train life 5 HM350 1 ARTICULATED DUMP TRUCK 4 The combination of high travel speeds and an efficient engine with low emissions 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 Technolo...

Page 4: ...se together offer a quiet 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 e...

Page 5: ...c type Retarder Front and center axle brakes act as retarder WEIGHT APPROXIMATE Empty weight 31060 kg 68 500 lb Gross vehicle weight 63440 kg 139 900 lb Weight distribution Empty Front axle 57 4 Center axle 21 6 Rear axle 21 0 Loaded Front axle 31 8 Center axle 34 2 Rear axle 34 0 BODY Capacity Struck 14 6 m3 19 1 yd3 Heaped 2 1 SAE 19 8 m3 25 9 yd3 Payload 32 3 metric tons 35 6 U S tons Material ...

Page 6: ...nd monitor TIRES 800 65 R29 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 SAA6D140E 5 Exhaust muffler Starting motor 1 x 11 0 kW CAB Air conditioner Ashtray Cigarette lighter Cup holder Electronic maintenance display m...

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