komatsu HM350-2 SPECIFICATIONS

GROSS HORSEPOWER

304 kW

408 HP

NET HORSEPOWER

294 kW

394 HP

MAXIMUM GVW

63440 kg

139,900 lb

ARTICULATED DUMP TRUCK

Photo may include optional equipment.

HM350-2

www.Komatsu.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.

W

ALK

-A

ROUND

HM350

-2

ARTICULATED DUMP TRUCK

HM350-2 A R TICULATED D UMP T R UCK

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

Interaxle & differential locks provide
excellent traction in rough terrain.

The oil-cooled multiple-disc interaxle lock and
differential locks can be turned on and off during
travel. In addition, the differential locks can lock up
all three axles’ differentials 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)

444 kW 595 HP

Easy-to-load body

● Heaped capacity 19.8 m325.9 yd

3

● 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 both
greater productivity and improved fuel economy

● Higher engine output and torque improve produc­tivity in all applications

Fully hydraulic articulated steering

● Light and easy operation

● Minimum turning radius 8.6 m 28'3"

The HM350-2 with new ecot3 engine, meets the EPA Tier 3 and EU Stage 3A emission
regulations, 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 HM350-2 has the competitive edge.

GROSS HORSEPOWER

304 kW 408 HP @ 2000 rpm

NET HORSEPOWER

294 kW 394 HP @ 2000 rpm

MAXIMUM GVW

63440 kg 139,900 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.

Genuine Answers for Land & Environment Optimization

Photo may include optional equipment.

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 produc­tivity. In addition, the differential lock switch, which is
a three position switch, can lock up the rear axle dif­ferentials 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 m325.9yd3body.

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 TICULATED D UMP T R UCK

O

PERATOR

E

NVIRONMENT

HM350

-2

ARTICULATED DUMP TRUCK

HM350-2 A R TICULATED D UMP T R UCK

Built-in ROPS/FOPS cab

These structures conform to ISO 3471-1994 standard.

Hydro-pneumatic Suspension for All Terrains

The hydro-pneumatic suspension assures a comfortable ride

even over rough terrain and ensures maximum productivity

and operator confidence.

Viscous Cab Mounts

Viscous mounts reduce the noise transmitted to the cab and

achieve a quiet 76 dB(A) noise level.

Air Suspension Seat is Standard

The air suspension, fabric-covered seat which is adjustable

to the operator’s weight is provided as standard. The air

suspension seat dampens vibrations transmitted from the

machine and reduces operator fatigue as well as holding the

operator securely to assure confident operation.

Electric Body Dump Control Lever

The low effort lever makes dumping easier than ever.

Supplementary Steering and Secondary Brakes

Supplementary steering and secondary brakes are standard

features.

Steering: ISO 5010-1992, SAE J1511

Brakes: ISO 3450-1996

6

Low-noise Designed Cab

Integrated cab and floor provide airtight cab. Engine room is

also sealed. The low noise and sound insulated muffler

/exhaust pipe contribute to reducing sound levels.

All these 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 easy and comfortable for the operator to use

all the controls. The result is more confident operation

by operators and greater productivity.

The front under view mirrors are increased to two from one,

and the rear view mirrors increased to four from two.

Newly employed laminated glass in the windshield assures

safe operation. In addition, electric heated rear window facili-

tates defrosting.

Easy-to-See Instrument Panel

The instrument panel makes it easy to monitor critical

machine functions. In addition, a caution light warns the

operator of any problems that may occur. This Komatsu

on-board monitoring system makes the machine very friendly

and easy to service.

Steering Wheel and Pedals

Low effort pedals reduce operator fatigue when working

continuously for long periods. The tiltable, telescoping steering

column enables operators to maintain the optimum driving

position at all times.

Komatsu has developed a state-of-the-art, wide comfortable cab. The low level of
vibration and noise ensure maximum productivity from the operator.

7

E

ASY

M

AINTENANCE

HM350

-2

ARTICULATED DUMP TRUCK

HM350-2 A R TICULATED D UMP T R UCK

S

PECIFICATIONS

AXLES

Full time all wheel drive with 100% differential lock in all axles.

Final drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Planetary gear

Ratios:

Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.231

Planetary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.941

TRANSMISSION

Torque converter . . . . . . . . . . . . . . . . . 3-elements, 1-stage, 2-phase

Tr ansmission . . . . . . . . . . . . . . . . . Full-automatic, counter-shaft type

Speed range . . . . . . . . . . . . . . . . . . 6 speeds forward and 2 reverse

Lockup clutch . . . . . . . . . . . . . . . . . . . . . . . . . Wet, single-disk 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 . . . . . . . . . . . . . . . . . . 57.1 km/h 35.5 mph

ENGINE

Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Komatsu SAA6D140E-5

Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water-cooled, 4-cycle

Aspiration . . . . . . . . . . . . . Turbo-charged, after-cooled, cooled EGR

Number of cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 mm 5.51"

Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 mm 6.50"

Piston displacement . . . . . . . . . . . . . . . . . . . . . . . . 15.24 ltr 930 in

3

Horsepower

SAE J1995 . . . . . . . . . . . . . . . . . . . . . . . . Gross 304 kW 408 HP

ISO 9249 / SAE J1349 . . . . . . . . . . . . . . . . . Net 294 kW 394 HP

Rated rpm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000 rpm

Fan drive type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical

Maximum torque . . . . . . . . . . . . . . . . . . . . . . . 203 kg•m 1,468 lb. ft

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(cyclonpack type), plus dust indicator

SUSPENSION SYSTEM

Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hydro-pneumatic suspension

Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Combined hydro-pneumatic

and rubber suspension system

MAIN FRAME

Type . . . . . . . . . . . . . . . . . . . . . . . . . Articulated type, box-sectioned

construction on front and rear

Connected by strong torque tubes.

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 . . . . . . . . . . . . . . . . . 8.6 m 28'3"

Articulation angle . . . . . . . . . . . . . . . . . . . . . . . . . . . 45° each direction

BRAKES

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

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 m319.1 yd

3

Heaped (2:1, SAE) . . . . . . . . . . . . . . . . . . . . . . . 19.8 m325.9 yd

3

Payload . . . . . . . . . . . . . . . . . . . . . 32.3 metric tons 35.6 U.S. tons

Material . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 kg/mm2185,000 psi

high tensile strength steel

Material thickness:

Bottom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 mm 0.63"

Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 mm 0.31"

Sides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mm 0.47"

Target area

(inside length x width) . . . . . . . . 5495 mm x 2935 mm 18'0" x 9'8"

Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exhaust heating (option)

HYDRAULIC SYSTEM

Hoist cylinder . . . . . . . . . . . . . . . . . . . . Twin, 2-stage telescopic type

Relief pressure . . . . . . . . . . . . . . . . . 20.6 MPa 210 kg/cm2 2,990 psi

Hoist time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 sec

CAB

Dimensions comply with ISO 3471 ROPS (Roll-Over Protective
Structure) standard

TIRES

Standard tire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.5 R25

SERVICE REFILL CAPACITIES

Fuel tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . 493 ltr. 130.3 U.S. Gal

Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 ltr. 13.2 U.S. Gal

Torque converter, transmission and

retarder cooling . . . . . . . . . . . . . . . . . . . . . 115 ltr. 30.4 U.S. Gal

Differentials (total) . . . . . . . . . . . . . . . . . . . . . 82.5 ltr. 21.8 U.S. Gal

Final drives (total) . . . . . . . . . . . . . . . . . . . . . . . 38 ltr. 10.0 U.S. Gal

Hydraulic system. . . . . . . . . . . . . . . . . . . . . . . 180 ltr. 47.6 U.S. Gal

Suspension (total) . . . . . . . . . . . . . . . . . . . . . . 21.2 ltr. 5.6 U.S. Gal

98

Tiltable Cab

The cab can be tilted rearward 32 degrees to provide easy

maintenance/service for the engine and transmission.

Note: An external hydraulic pump is required to tilt the cab

or a service crane can be used after easily remov-

ing only eight bolts...

The HM350-2 has been designed to keep service time down and productivity up by
reduced number of grease points, easy access to filters, and longer intervals between
oil changes.

Fewer Grease Points

The number of grease points are minimized by using maintenance-free

rubber bushings.

Guards

The following guards are provided as standard:

● Protective grille for rear window

● Engine underguard

● Heavy duty transmission underguard

● Propeller shaft guards

● Exhaust thermal guard

● Fire prevention covers

Extended Service Intervals

In order to minimize operating costs, service intervals have been extended:

● Engine oil 500 hours

● Tr ansmission oil 1000 hours

● Engine oil filters 500 hours

● Tr ansmission oil filters 1000 hours

1110

DIMENSIONS

2590 mm 8'6"
3250 mm 10'8"

1600 mm 5'3"

3700 mm 12'1"

3170 mm 10'5"

1350 mm

4'5"

585 mm

1'11"

4350 mm 14'3"

1850 mm 6'1"

620 mm

2'0"

10270 mm 33'8"

11145 mm 36'7"

7035 mm 23'1"

3190 mm 10'6"

4200 mm

13'9"

8600 mm

28'3"

5235 mm 17'2"

70°

45°

720 mm 2'4"

2975 mm 9'9"

2

6

.

5

R

2

5

2

6

.

5

R

2

5

2

6

.

5

R

2

5

F1

F2

F3

F4

F5

F6

706050403020100

0

3

5

6

7

8

9

10

20

30

40

50

2

1

4

35.0

30.0

25.0

20.0

15.0

14.0

13.0

12.0

11.0

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

100

60

80

40

30

20

10

5

4

3

2

0

RIMPULL

010152025303540

TRAVEL SPEED

MPH

km/h

LOADED

EMPTY

GROSS WEIGHT

x10

3

lb

x10

3

kg

x10

3

lb x10

3

kg

5

TOTAL RESISTANCE (GRADE + ROLLING) (%)

70 80 90 100 110 120 130 150 180

30 40 50 60 70 80

010

0102030405060

20 30 40 50 60 70 80 90 100 km/h

MPH

TRAVEL SPEED

-10

-15

-20

-25

-30

-5

-35

-40

TOTAL RESISTANCE (GRADE + ROLLING) (%)

0

050100 150 200

10 20 30 40 50 60 70 80 90 100

-45-50

GRADE DISTANCE : CONTINUOUS DESCENT

GROSS WEIGHT

x10

3

lb

x10

3

kg

LOADEDEMPTY

F1

F2

F3

F4

F5

F6

TRAVEL PERFORMANCE

BRAKE PERFORMANCE

STANDARD EQUIPMENT FOR BASE MACHINE

OPTIONAL EQUIPMENT

CAB:

● Power window (R.H)

● Radio, AM/FM

● Radio, AM/FM with cassette

BODY:

● Body exhaust heating kit

● Body liner

● Rock body

● Tail gate, wire type

● Upper side extension, 200 mm 8”

LIGHTING SYSTEM:

● Back work lights, left and right side

● Fog lights

● Yellow beacon

SAFETY:

● Rear view camera and 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/monitor-

ing system

● Heated rear window

● Operator seat, reclining, air suspension

type with retractable 78 mm 3” width seat
belt

● Passenger seat

● Power window (L.H)

● Space for lunch box

● Steering wheel, tilt and telescopic

● Sun visor, front window

● Tiltable ROPS cab with FOPS, sound

suppression type

● Tw o doors, left and right

LIGHTING SYSTEM:

● Back-up light

● Hazard lights

● Headlights with dimmer switch

● Indicator, stop and tail lights

GUARD AND COVERS:

● Engine underguard

● Exhaust muffler thermal guard

● Fire prevention covers

● Propeller shaft guards, front and rear

● Tr ansmission underguard

SAFETY EQUIPMENT:

● Alarm, backup

● Anti-slip material on fenders

● Automatic supplementary steering

● Coolant temperature alarm and light

● Hand rails for platform

● Horn, electric

● Ladders, left and right hand side

● Protective grille for rear window

● Rearview mirrors

● Steering joint locking assembly

● Under view mirrors

BODY:

● Electronic hoist control system

TIRES:

● 26.5 R25

OTHER:

● Centralized greasing

● Differential locks in all axles, clutch type

● Electric circuit breaker, 24V

● Mud guards

● Side marker

HM350

-2

ARTICULATED DUMP TRUCK

HM350-2 A R TICULATED D UMP T R UCK