Ficha Tecnica Komatsu 400 -7

PRODUCT BULLETIN

PC400LC-7

Hydraulic Excavators

INTERNAL USE ONLY

Introducing the PC400LC-7Hydraulic Excavators

1

TABLE OF CONTENTS

1 PURPOSE AND SCOPE

........................................................................................................................................................................... 2

2 DESIGN CONCEPT

.................................................................................................................................................................................. 3

3 SUMMARY OF FEATURES

..................................................................................................................................................................4-7

4 HIGHLIGHTS AND TECHNICAL SELLING POINTS

...............................................................................................................................8-9

5 PRODUCTIVITY FEATURES

INCREASED PRODUCTION, REDUCED FUEL CONSUMPTION ............................................................................................................. 10WORKING MODE SELECTION.............................................................................................................................................................. 11HIGH ENGINE OUTPUT, LOW FUEL CONSUMPTION ........................................................................................................................... 12LARGER DIGGING FORCE.................................................................................................................................................................... 13PROVEN HYDRAULIC SYSTEM.......................................................................................................................................................14-15EXCELLENT MACHINE STABILITY ....................................................................................................................................................... 16TWO BOOM SETTINGS ........................................................................................................................................................................ 16LIFT CAPACITY .................................................................................................................................................................................... 17SWING TORQUE .................................................................................................................................................................................. 18TRACTIVE EFFORT ............................................................................................................................................................................... 18

6 RELIABILITY & DURABILITY FEATURES

INCREASED CLEARANCE BETWEEN REVOLVING FRAME/TRACK....................................................................................................... 19IMPROVED DURABILITY OF TRACK LINK ........................................................................................................................................... 19HIGH-CAPACITY AIR CLEANER ........................................................................................................................................................... 19IMPROVED RELIABILITY OF ELECTRIC PARTS ................................................................................................................................... 20DT CONNECTORS ................................................................................................................................................................................ 20O-RING FACE SEAL.............................................................................................................................................................................. 21HIGH-PRESSURE IN-LINE FILTERS ..................................................................................................................................................... 21LARGE CASTINGS................................................................................................................................................................................ 22

7 OPERATOR COMFORT

LARGE-SIZED CAB............................................................................................................................................................................... 23SUPER SILENT CAB ............................................................................................................................................................................. 24CAB DAMPER....................................................................................................................................................................................... 25CIRCULATION OF AIR IN CAB FOR CLEANLINESS .............................................................................................................................. 26INCREASED CAB PRESSURIZATION.................................................................................................................................................... 26WASHABLE FLOOR MAT...................................................................................................................................................................... 26CONVENIENT CAB ACCESSORIES ....................................................................................................................................................... 27CONVENIENCE OPTIONS ..................................................................................................................................................................... 27COUNTERBALANCE ASSISTED PULL-UP FRONT WINDOW ................................................................................................................ 28IMPROVED VISIBILITY ........................................................................................................................................................................ 28

8 EASY MAINTENANCE & INSPECTION

RADIATOR AND OIL COOLER .............................................................................................................................................................. 29EASY ACCESS FOR ENGINE INSPECTION............................................................................................................................................ 29ENGINE OIL.......................................................................................................................................................................................... 30FUEL LINE ............................................................................................................................................................................................ 30FUEL TANK........................................................................................................................................................................................... 31ENGINE AND HYDRAULIC OIL FILTER................................................................................................................................................. 32LONG REPLACEMENT INTERVAL PARTS ............................................................................................................................................ 33

9 SAFETY FEATURES

GLOBAL SAFETY DESIGN .................................................................................................................................................................... 34FULLY PRESSED CAB .......................................................................................................................................................................... 35OPG TOP GUARD (OPTION), FRONT FULL HEIGHT GUARD (OPTION)................................................................................................ 35

10 ENVIRONMENTAL FEATURES

LOW EMISSION ENGINE...................................................................................................................................................................... 36LOW NOISE AROUND MACHINE.......................................................................................................................................................... 36ECONOMY MODE................................................................................................................................................................................. 37DESIGNED FOR EFFECTIVE USE OF RECYCLABLE RESOURCES ......................................................................................................... 37

11 MULTI-FUNCTION COLOR MONITOR

OVERVIEW ........................................................................................................................................................................................... 38SIMPLIFIED WORKING MODE ............................................................................................................................................................. 39HYDRAULIC PUMP OIL FLOW ADJUSTMENT SYSTEM....................................................................................................................... 39AUTOMATIC THREE-SPEED TRAVEL/LIFTING MODE .......................................................................................................................... 40EQUIPMENT MANAGEMENT MONITORING SYSTEM (EMMS) ............................................................................................................ 40EMMS MAINTENANCE FUNCTION ....................................................................................................................................................... 41EMMS DATA MEMORY FUNCTION ...................................................................................................................................................... 41GREASING INTERVAL EXTENDED ....................................................................................................................................................... 42

12 ATTACHMENTS & OPTIONAL EQUIPMENT

WORK EQUIPMENT AVAILABILITY...................................................................................................................................................... 43PIPING FOR ONE ATTACHMENT .....................................................................................................................................................44-46

13 INTERCHANGEABILITY

........................................................................................................................................................................ 47

14 COMPETITIVE SPECIFICATIONS

.....................................................................................................................................................48-49

TABLE OF CONTENTS

1

2

PURPOSE AND SCOPE

Japanese Market

Evaluation in Japan

Caterpillar 345B Series II

Slow compound operation is a weak point of this machine. The boom will not rise when boom is raised, arm is moved in, and bucket is curled simultaneously.

Hitachi ZX450

Lack of response from work equipment is a weak point of this machine. When arm OUT operation is started just after arm IN operation, the work equipment response is very slow.

TREND OF REGULATIONS FOR CONSTRUCTION EQUIPMENT

Emission

Stricter emission regulations will be applied to construction equipment worldwide in order to preserve

the global environment. The time to enforce the new emission regulations will depend on the engine output range.

The PC400-7 is Komatsu’s genuine answer for customers around the world.

CAT

PC400-5 PC400-6 PC400-7

November

August December

E450B

EX400-1

February

M/C m/c

November February

EX400-3 EX400-5 ZX450

350 345BL

October September'90 '91 '92 '93 '94 '95 '96 '97 '98 '99 '00 '01 '02 '03

HITACHI

September

345BL Series II

*4.7/0.40

*4.0/0.30

*4.0/0.20

*4.0/0.20

*4.0/0.20

*4.0/0.30

*4.0/0.203rd Stage

*4.7/0.40

2

3

DESIGN CONCEPT

PC400LC-7 Product Concept

PC400LC-7

1. Largest production and lowest fuel consumption in its class with improved proven HydrauMind system

2. Improved fundamental performance such as digging force, stability, lift capacity, etc.

3. Higher reliability and durability

4. Easy maintenance and high serviceability to avoid waste and time-consuming work as much as possible

5. Low-noise and low-vibration design for the highest operator comfort

6. Meets EPA, EU and Japan Tier II emission regulations

7. Set new leading edge world standards for quality, reliability and safety

8. Multi-function color monitor — First in the industry

3

4

SUMMARY OF FEATURES

Comparison of selling features

* Measured value** With power max.

KomatsuPC400LC-7

KomatsuPC400LC-6Unit

BA

SIC

PE

RF

OR

MA

NC

E

Engine model —

SAA6D125E

SA6D125E

Flywheel horsepower kW/rpm(HP/rpm)

246/1850330/1850

228/2050306/2050

Working mode, for production oriented customer —

Active

Active

* Production (ratio) —

108

100

* Fuel cosumption (ratio) —

90

100

* Efficiency (ratio) —

120

100

Working mode, for fuel consumption oriented customer —

Economy

Heavy duty

* Production (ratio) —

97

95

* Fuel consumption (ratio) —

81

91

* Efficiency (ratio) —

120

104

Arm crowd forcew/o Power max. kN/ton/US ton

200/20.4/22.5

198/20.2/22.3

w/Power max. kN/ton/US ton

214/21.8/24.0

N/A

Bucket digging forcew/o Power max. kN/ton/US ton

256/26.1/28.8

252/25.7/28.3

w/Power max. kN/ton/US ton

275/28.0/30.9

N/A

Comparison of bucket power

Bucket digging force ton

28.0**

25.7

* Bucket digging time sec

3.6

3.6

Digging force/digging time ton/sec

7.78**/7.25**

7.14

Bucket power (ratio) —

109**

100

* Lateral stability (ratio) —

115

100

Two boom mode settings —

Available

Available

OP

ER

ATO

R C

OM

FO

RT

Cab volume m

3

(yd

3

)

2.67 (3.49)

2.34 (3.06)

Cab interior dimensions

Width mm (in)

930 (36.6)

920 (36.2)

Length mm (in)

1650 (65.0)

1560 (61.4)

Height mm (in)

1595 (62.8)

1584 (62.4)

Seat reclining angle degree

72

36

Seat slide amount mm (in)

160 (6.3)

100 (3.9)

Console slide amount mm (in)

180 (7.1)

120 (4.7)

Foot space (distance from travel lever to seat) mm (in)

922 (36.3)

809 (31.9)

* Noise level at operator ear

Working dB

75

81*

Swinging dB (A)

83

87

Relief dB (A)

75

81*

Cab mount method —

Cab damper

Multi-layer viscous

Vibration at floor on the foot dB (VL)

115

120

* Pressurization mmAq (inAq)

6.0 (0.2)

1.5 (0.06)

Type of air conditioner (optional) —

Full-auto

Manual

Cooling capacity (SAE) [optional] kcal/h

6900

6900

Heating capacity (SAE) [optional] kcal/h

6500

6500

Front window pull up method —

With assist

w/o assist

3

5

SUMMARY OF FEATURES

** Note: The output in the catalog is 231 kW {314 HP}/1,800 rpm in the H/P mode, but only 226 kW {307 HP} is used normally.The output is increased to 231 kW {314 HP} only when a large load is applied in the H/P mode.

: PC400LC-7 Far superior : PC400LC-7 Superior : PC400LC-7 Equivalent

Caterpillar345BL Series II

HitachiZX450

Superiority against

PC400LC-6 345BL ZX450

3176CATAAC AA-6WG1TQA

239/2000321/2000

**231/1800**314/1800

one mode only H/P mode

106 100

97 95

109 105

N/A N/A

N/A N/A

N/A N/A

N/A N/A

199/20.3/22.4 200/20.4/22.5

N/A N/A

258/26.3/29.0 259/26.4/29.1

N/A N/A

26.3 26.4

4.9 4.4

5.37 6.0

75 84

83 90

N/A N/A

2.6 (3.4) 2.67 (3.49)

937 (36.9) 920 (36.2)

1610 (63.4) 1625 (64.0)

1590 (62.6) 1565 (61.6)

54 42

180 (7.1) 160 (6.3)

180 (7.1) 120 (4.7)

910 (35.8) 860 (33.9)

75.9* 76.7*

INA INA

82.9* 76.2*

Single-layer viscous


INA INA

Full-auto Full-auto

INA 4300/6900

With assist W/o assist

Active mode is for production oriented customers

Economy mode is for fuel consumption oriented customers

3

6

SUMMARY OF FEATURES

Comparison of selling features

Legend N/A: Not availableINA: Information not available

* Measured value** Automatic greasing

KomatsuPC400LC-7

KomatsuPC400LC-6Unit

MO

NIT

OR

Type of monitor —

Multi-function

Black & White segment

Oil flow adjustment function for attachment

Variable flow adjustment

1/2 flow at “B” mode

Adjustment method of oil flow —

Monitor

Manual

Working mode/Power mode

Active mode

Available

Available

Economy mode

Available

N/A

Breaker mode —

Available

Available

Lifting mode —

Available

N/A

Maintenance, Troubleshooting, etc.

Abnormality display —

Available

Available

Abnormality check function —

Available

Available

Maintenance (Filter & oil change interval) —

Available

Available

Password function —

Available

N/A

Trouble history memory function —

Available

Available

Travel speed —

3 speed

3 speed

Shift control —

Automatic

Automatic

SA

FE

TY

Blind angle at operator eye degree

64

97

Capability for OPG top guard level 1 —

Available

N/A

Type of seat belt —

Retractable (Opt)

Optional

Thermal guard —

Available

Available

Fully covered fan guard —

Available

Available

Engine neutral start —

Available

Available

Type of cab front window glass —

Safety

Safety

EN

V.

EPA Tier 2 emission regulations —

Conformity

N/A

Ambient noise level(Sound power level) dB

107

109.1*

MA

INT

EN

AN

CE

Individual installation/removal of radiator

Possible

N/A

Individual installation/removal of oil cooler —

Possible

N/A

Fuel strainer —

Standard

Optional

Fuel drain valve remote mount —

Available (Std)

N/A

Fuel tank capacity Itr (US gal)

650 (172)

605 (160)

Fuel tank rust prevention —

Available

N/A

Engine oil drain valve (Eco valve) —

Available (Std)

Available (Opt)

Replacement interval

Engine oil hours

500

250

Engine oil filter hours

500

250

Hydraulic oil hours

5000

5000

Hydraulic oil filter hours

1000

500

Lubrication for bucket hours

250

50

Lubrication for work equipment (except bucket) hours

500

100

RELI

ABIL

ITY

&DU

RABI

LITY

Clearance between revolving frame and track mm (in)

201 (7.9)

154 (6.1)

Projection of travel motor cover mm (in)

122 (4.8)

142 (5.6)

Seal of hydraulic piping —

O-ring face seal

Taper seal

Size (Diameter) of air cleaner mm (in)

381 (15)

356 (14)

3

7

SUMMARY OF FEATURES

: PC400LC-7 Far superior : PC400LC-7 Superior : PC400LC-7 Equivalent

Caterpillar345BL Series II

HitachiZX450

Superiority against

PC400-6 345BL ZX450

Black & White multi Black & White segment

1/2 flow 1/2 flow

Switch Switch

One modeAvailable

Available

Available Available

N/A Available

Available INA

Available INA

INA N/A

N/A N/A

INA Available

2 speed 2 speed

Automatic Automatic

81 89

Available Available

Retractable Retractable

INA N/A

Available INA

Available Available

Laminate INA

Conformity Conformity

107.9* 109*

INA INA

INA INA

Standard Standard

N/A N/A

720 (190) 650 (172)

INA INA

N/A N/A

250 500

250 500

2000 4000

500 1000

50 10 (Manual)

50 50**

115 (4.5) 122 (4.8)

— —

98 (3.9) 103 (4.1)

INA INA

INA INA

4

8

HIGHLIGHTS AND TECHNICAL SELLING POINTS

High Production and Low Fuel Consumption

Production is increased with larger output during Active mode, while fuel efficiency is further improved.

•

Fuel efficiency is increased 20%. (Compared with PC400LC-6)

High-output and low-fuel consumption engine

•

Low fuel consumption attained by an electronically controlled fuel injection system.

Larger digging force

•

Arm crowd force is increased 8% when the Power Max. function is applied

•

Bucket digging force is increased 9% when the Power Max. function is applied (Compared with PC400LC-6)

Excellent machine stability

Machine stability and balance is improved by a new counterweight design.

Two-mode setting for boom

Switch selection allows either powerful digging or smooth boom operation.

Excellent Reliability and Durability

•

Reduced risk of revolving frame damage

•

Hydraulic piping with O-ring face seal

•

Highly durable track link (Improved durability of track link)

Easy Maintenance

•

Replacement interval is extended for engine oil, engine oil filter and hydraulic filter

•

Easy removal and installation of the radiator and oil cooler. (Side-by-side cooling)

•

Fuel tank capacity increased

•

New bushing on work equipment extends lubricating interval from 50 hours to 250 hours for bucket pin bushings, excluding bucket (Optional)

•

Easy troubleshooting with self-diagnostic monitor

•

Easy access for engine inspection

•

High-capacity air cleaner

4

9

Harmony with Environment

•

Low emission engine

A powerful turbocharged and air-to-air aftercooled Komatsu SAA6D125E provides

246 kW

330 HP.This engine is EPA, EU and Japan Tier 2 certified, without sacrificing power or machine productivity.

•

Economy mode saves fuel consumption

•

Low noise operation

•

Designed for effective use of recyclable resources

Large Comfortable Cab

The new PC400LC-7’s cab volume is increased by 14%, offering an exceptionally roomy operating environment

•

Highly pressurized cab with automatic air conditioner

•

Low noise design

•

Low vibration with cab damper mounting

•

FOG capable with optional bolt-on top guard

OPG (Operator Protective Guards) top guard level 2 by ISO 10262 (formerly FOG)

Variable Track Gauge (optional)

•

Lateral stability is significantly improved when operating with the gauge extended.

•

Lateral stability is increased by 30% (compared with the fixed gauge of the current model).

•

Complies with transportation regulations by retracting the gauge.

Photo may include optional equipment.

10

5

PRODUCTIVITY FEATURES

INCREASED PRODUCTION, REDUCED FUEL CONSUMPTION

The PC400LC-7 produces 8% more than the PC400LC-6 by increasing the engine horsepower, digging force, and work equipment speed.Fuel consumption is reduced and fuel efficiency is increased by approx. 20%.

Increase of production in Active mode

Active Mode

Production of PC400LC-7 in Active mode is 8% greater than PC400LC-6, and fuel efficiency is 20% better.

Production of PC400LC-7 in Active mode is 2% greater than 345BL and fuel efficiency is 10% better.

Production of PC400LC-7 in Active mode is 8% greater than ZX450 and fuel efficiency is 15% better.

Note: Index shows PC400LC-6 Active mode as 100.

Economy Mode

Production of PC400LC-7 in Economy mode is 2% greater than PC400LC-6 Heavy Duty mode and fuel consumption is 10% lower.Fuel efficiency of PC400LC-7 in Economy mode is 20% better than PC400LC-6 Heavy Duty mode.

Production 8% increase(Compared to PC400LC-6)

FVPM3262

Production (Index)

Production priorityFuel consumption (Index) Fuel efficiency (Index)

Active modePC400LC-7

Active modePC400LC-6

PC400LC-6

CAT345BLII

HitachiZX450

HPmode

120

100

104

109

105

108

100

95

106

100

90

100

91

97

95

90 80 90 90 100 110 120100100 110

Large production

HD mode

Condition:90˚ swing, dump truck loading on the same level, sandy soil

FVPM3263

Production (Index)

Fuel saving priorityFuel consumption (Index) Fuel efficiency (Index)

Economy modePC400LC-7

PC400LC-6

120

100

97

95

81

91

90 80 90 90 110100100 110

Low fuel consumption

HD mode

100 120

Condition: 90˚ swing, dump truck loading on the same level, sandy soil

11

5


WORKING MODE SELECTION

continued

[New E mode setting]

PC400LC-7 engine performance curves

In the current PC400LC-6 E-mode, the hydraulic pump adjusts to the speed and load of the engine. In the new PC400LC-7, the engine has a common rail type fuel injection system and the fuel injection rate is

controlled electronically. Therefore, in the new E-mode, the engine controller adjusts the engine speed, and the hydraulic pump is matched accurately by sensing the engine RPM.

FVPM3242Engine speed (rpm)

To

rqu

e (k

gm)

New E-mode pump matching lineCurrent E-modepump matching line

A-mode(Engine)

The work equipmentspeed during light dutywork is nearly the same as that in A-mode.

Isochronous control

Current E-mode(Engine)

The matching point underheavy load is set similarlyto that in the current E-modeto reduce fuel consumption.

New E-mode(Engine)

WORKING MODE SELECTION

5

12


HIGH ENGINE OUTPUT, LOW FUEL CONSUMPTION

The PC400LC-7 utilizes a newly developed Komatsu SAA6D125E engine with air-to-air aftercooler.

This engine has high output, low fuel consumption and low emission.

(1) Highest output in its class

* The output in the catalog is 231 kW {314 HP}/1,800 rpm in the H/P mode, but only 226 kW {307 HP} is used normally.

The output is increased to 231 kW {314 HP} only when a large load is applied in the H/P mode.

(2) Low fuel consumption

Air cooled with the air-to-air aftercooler is supplied to the combustion chamber for higher combustion efficiency.

1.

Since the displacement of the hydraulic pump is increased, sufficient pump capacity is secured and the work equipment speed is increased while the engine speed is lowered and set at the highest fuel efficiency point.

2.

Fuel consumption is reduced by utilizing the electronically controlled fuel injection system. The high-pressure fuel injection is optimized electronically to reduce the fuel consumption.

3.

The engine speed is kept level by the isochronous control to reduce the fuel consumption and noise.

Fuel consumption is improved by reducing hydraulic loss

The quick return circuit

is added to the arm cylinder bottom circuit. Since a part of the return oil is sent to the tank directly when the arm is moved OUT, the hydraulic loss is reduced about 30%. The result is a reduction in fuel consumption.

Model

Item

KomatsuPC400LC-7

KomatsuPC400LC-6

KomatsuPC400LC-6

EXCEL

CAT

345BL II

Hitachi*

ZX450

KobelcoSK450-6SK480-6

Engine name KOMATSUSAA6D125E

KOMATSUSA6D125E

KOMATSUSAA6D108E

CAT3176CATAAC

ISUZUAA-6WG1TQA

MITSUBISHI6D24-TLE2A

Rated output

kW/rpm{HP/rpm}

246/1850{330/1850}

228/2050{306/2050}

228/1950{306/1950}

239/2000{321/2000}

231/1800{314/1800}

235/2000{315/2000}

ModelItem PC400LC-7 PC400LC-6

Displacement of pump

cc/rev

190 + 190

160 + 160

Fuel injection pressure

MPa{kgf/cm

2

}

120{1224}

70{714}

Engine speed

rpm

1850

2050

Two return hoses

HIGH ENGINE OUTPUT, LOW FUEL CONSUMPTION

13

5


LARGER DIGGING FORCE

●

Larger Arm Crowd Force and Bucket Digging Force Provide Increased Production

Arm crowd force is increased 8% and bucket digging force is increased 9% when the Power Max function is applied. (Compared with PC400LC-6)

Reference: Comparison of arm crowd force

Comparison of bucket digging force Measured with ISO rating

Comparison of bucket digging power Measured with 3380 mm (11'1") arm and ISO rating

* Measured value.

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450

KobelcoSK450-6

Arm crowd force

W/o Power Max.

kN {ton/US ton}

200{20.4/22.5}

198{20.2/22.3}

199{20.3/22.4}

200{20.4/22.5}

202{20.6/22.7}

With Power Max.

kN {ton/US ton}

214{21.8/24.0}

N/A N/A N/A 221{22.5/24.8}

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450

KobelcoSK450-6

Bucket digging force

W/o Power Max.

kN {ton/US ton}

256{26.1/28.8}

252{25.7/28.3}

258{26.3/29.0}

259{26.4/29.1}

264{26.9/29.7}

With Power Max.

kN {ton/US ton}

275{28.0/30.9}

N/A N/A N/A 289{29.5/32.5}

FZPM2827

Model

Item

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450

W/o Power Max. With Power Max.

— — —

Bucket digging force

ton {US ton}

26.1 {28.8} 28.0 {30.9}

25.7 {28.3} 26.3 {29.0} 26.4 {29.1}

Bucket speed (digging)*

sec

3.6 3.6

3.6 4.9 4.4

Bucket digging force/speed

—

7.25 {8.0} 7.78 {8.58}

7.11 {7.86} 5.37 {5.92} 6.0 {6.61}

Bucket power ratio

—

1.02 1.09

1.00 0.76 0.84

LARGER DIGGING FORCE

5

14


PROVEN HYDRAULIC SYSTEM

The high output engine combined with Komatsu’s proven HydrauMind system provides high production and easy operation.

What is HydrauMind?

The HydrauMind system symbolizes the new technology featured on the

Avance

series where the load sensing valves and pressure compensation valves handle all adjustments for individual work applications based on the proportional pressure and

lever stoke sensed. The load sensing valves are the “brains” of the Avance excavators allowing full automatic oil flow control without the need for computer control in all operations.

Benefits of HydrauMind system

•

You can operate all work equipment easily and as desired. For example, when the ground condition changes in digging, the required oil amount automatically flows to the actuators.

•

You do not have to worry about lever stroke or the computer program.

•

When moving the boom, arm and bucket at the same time, all equipment works, just like a human hand, at the optimum combination of speed and power without using any electronic device.

•

The finest controllability you have ever experienced.

•

Changing or adding valves and work equipment is easy.

Effective work using HydrauMind system

No speed changedue to load

Underheavy/light load

Lever stroke

Wor

keq

uipm

ent

spee

d

Pow

er

Max.

Lever stroke

FVPM2867

1. Work equipment speed is determined only by lever stroke.

Whatever the position of the work equipment control lever, all the oil flow from the pump goes to the actuator.Even if the load on the actuator changes, actuator speed remains the same.

Right-handlever

Left-handlever

Time

Buc

ket

spee

dA

rmsp

eed

FVPM2868

2. Compound operations not affected by load.When two or more actuators are operated at the same time, the oil is divided and sent to each actuator corresponding to the lever stroke, regardless of the size of the load.There is no problem of excess oil flowing to the circuit at light load, and operations can be carried out simply in accordance with the operating feel.

Inching

FVPM2869

Fine control with lifting operations is easy. The work equipment speed corresponding to the control lever stroke is constant, so it is easy to start movement without being affected by the size of the load being lifted.

FVPM2870

Reverse scraping operations are easy. The arm can be moved slowly under full power, ensuring easy operation.

15

5


PROVEN HYDRAULIC SYSTEM

continued

CrusherBreaker

FVPM2871

Work with additional attachments is easy Even when attachments such as breakers or crushers (which require a different amount of oil) are used, the flow of oil can be adjusted simply by adjusting the movement of the control pedal for the attachment.(= spool operating area)

SlowlyFVPM2872

It is easier to fully load the bucket.During simultaneous operation, the work equipment moves slowly at maximum power, without being influenced by the other actuators, so it is easy to fully load the bucket.

FVPM2873

It is easy to carry out digging work along the faces of walls.Lateral power pushing is powerful allowing digging operation to be carried out efficiently.

No shaking or jerking

FVPM2874

The machine can carry out operations easily without any undue chassis vibration. During simultaneous operations, there is no change in the work equipment speed caused by change in load, thus, there is minimal chassis vibration.

FVPM2875

It is to easy transport fresh concrete.Fine control of compound operations can be carried out easily.

FVPM2876

It is easy to scrape down.Even without operating the lever to the maximum position, maximum digging power can be obtained, making it possible to carry out slow control.

FVPM2877

It is easy to operate the crusher and work equipment simultaneously.The oil flow is divided according to the movement of the lever, regardless of whether the load is heavy or light.

FVPM2878

Steady

It is easy to dig soft rock or dig up boulders. It is easy to control the boom RAISE, so the cutting edge does not deviate from the boulders.

5

16


EXCELLENT MACHINE STABILITY

The tail swing radius is increased by 145 mm (5.7") and the counterweight is increased by 612 kg (1,350 lb.) to

improve the balance and stability of the machine.

TWO BOOM SETTINGS

1. Smooth mode

While gathering blasted rocks with the arm, lifting of machine front portion is prevented and shock due to machine falling is reduced. As a result, gathering material with arm is executed smoothly. (This is especially effective for gathering work from 1m (3'3") under-ground to the surface.) In addition, this is effective for scraping down facings loosened by blasting (dealing with floating stones).

2. Power mode

Boom pushing force is increased, ditch digging and box digging operation on hard ground are improved.

Model KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450HItem

Lateral stability (ratio) 115/110

100/100 83 90

(Compared with PC400LC-6)PC400LC: 15% increase

Lateral stability

Two boom settings switch

Boom raise

FVPM3211

Scraping of cutting face

FVPM3212

FVPM3213

Model KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450HItem

Two boom setting

—

Equipped

Equipped Not equipped Not equipped

17

5


The PC400LC-7 has excellent lift capacity. To achieve the large lifting capacity the counterweight has been moved 6 inches further from the center of the machine and weight of the counterweight has been increased by 1,350 lbs. to 20,950 lbs.

All machines are equipped with 35.5" track shoes

Arm

PC400LC-7

13'1"

PC400LC-6

13'1"

CAT 345BL2

12'10"

JD 450C LC

12'10"

The John Deere 450C LC is only available with the variable gauge track frame. Over the side it does have a slight advantage vs. the PC400LC-7. If this is an issue,

please use the PC400LC-7 Variable Gauge machine and you will see a significant lift capacity advantage.

LIFT CAPACITY

5

18

The PC400LC-7 has excellent swing capability. Powerful swing torque provides quick swing acceleration that results in fast cycle times.

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

John Deere450C LC

Foot Pounds 111,059

110,457 110,260 107,004

Ratio 100

99 99 96


The PC400LC-7 has excellent travel capabilities. Although drawbar pull is not class leading, the steering index is a very good providing great maneuverability.

(Drawbar Pull x Track Gauge)Steering Index

(Operating Weight x Track Length)

Non-Variable Gauge

Variable Gauge

* The John Deere 450C LC does not have a standard (non-variable) undercarriage option.

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

John Deere450C LC*

Operating Weight 98,226

97,740 99,590 104,000

Drawbar Pull 73,880

73,880 74,380 79,590

Track on Ground 4350

4350 4360 4470

Standard Track Gauge 2740

2740 2740 2890

Steering Index 0.474

0.476 0.469 0.495

Ratio 100

100 99 104

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

John Deere450C LC*

Operating Weight 100,457

99,971 104,340 104,000

Drawbar Pull 73,880

73,880 74,380 79,590

Track on Ground 4350

4350 4360 4470

Standard Track Gauge 2890 2890 2890 2890

Steering Index 0.489 0.491 0.473 0.495

Ratio 100 100 97 101

SWING TORQUE

TRACTIVE EFFORT

19

6

RELIABILITY & DURABILITY FEATURES

INCREASED CLEARANCE BETWEEN REVOLVING FRAME/TRACK

Increased clearance between revolving frame and track to reduce risk of revolving frame damage

The clearance between the track and revolving frame is increased by about 5 cm to reduce the risk of revolving frame damage from stones.

IMPROVED DURABILITY OF TRACK LINK

The PC400LC-7 track link has a durable strut similar to that of the PC400LC-6. In addition, the square nuts are utilized to reduce drag and allow higher working efficiency.

Grease Sealed Track provides excellent undercarriage durability

HIGH-CAPACITY AIR CLEANER

High-capacity air cleaner for large-sized machines

The life of the air cleaner is increased and clogging and power reduction in a short period are prevented.In addition, the sealing method is changed to increase the reliability (Radial seal type).The outside diameter is increased from 14 inches to 15 inches and the life is at least 1.84 times longer than the current model.

154 mm (6.1") ➝ 201 mm (7.9")

Photo may include optional equipment

FZPM2821

Strut added

Square nut used

6

20


IMPROVED RELIABILITY OF ELECTRIC PARTS

Improvement in reliability of electrical parts

•

Waterproofing at junctions in the wiring harness is improved.

•

Junction parts of electric harness is covered by thermal shrinking tube with seal.

•

Ground connection improvedFollowing measures are used to improve ground connection performance.

•

Tightening of plural ground connection cables is discontinued.

•

Centralized ground connection is discontinued, and individual ground connection is utilized to improve reliability of ground connection.

DT CONNECTORS

The PC400LC-7 comes standard with the DT-type electrical harness connectors that can withstand higher terminal voltage. The connecting wires are individually sealed with rubber for improved water and vibration resistance.DT connectors are adopted in the electrical harness for improved reliability and durability in severe environmental conditions due to heat, water and vibration.

21

6


The hydraulic hose seal method has been changed from a conventional taper seal to the O-ring seal. This provides improved sealing performance during vibration and shock loads.

PC400LC-7 PC400LC-6

FZPM2908

O-RING FACE SEAL

HIGH-PRESSURE IN-LINE FILTERS

The PC400LC-7 has high pressure in-line filters installed at the pump discharge ports. This protects the hydraulic system from contamination due to the unlikely event of a pump failure.

6

22


LARGE CASTINGS

Large Castings are utilitzed in the work equipment, improving strength and durability. The castings smoothly transfer forces and loads, improving the work equipment and main frame life. They also improve torsional strength.

Boom Foot

Arm Tip

Boom Tip

23

7

OPERATOR COMFORT

LARGE-SIZED CAB

The operating space inside the cab conforms to the working space standard of ISO (PC400LC-6 does as well).Even a large operator should be satisfied with the wide space in the cab. Since the wide door is installed, the operator can get in and out easily.

•

Full flat reclined seat with headrestThe large cab enables full flat reclining of the seat back with headrest for relaxing rest on a break.

•

Seat sliding travel is increasedSeat sliding travel is increased 120 mm (4.7") from 220 mm (8.7") to 340 mm (13.4") by use of large cab.

•

Foot space (distance from travel control lever to seat) is enlarged 113 mm (4.4").

(Compared to PC400LC-6)

Cab volume 14% increase

Height+11 mm (0.4")(Conforms to ISO)

Width+10 mm (0.4")(Conforms to ISO)

Foot space+29 mm (1.1")

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

Volume

m

3

(yd

3

)

2.67 (3.49)

2.34 (3.06) 2.60 (3.40) 2.67 (3.49)

Inside dimensions

Width mm (ft.in)

930 (3'1")

920 (3'0") 937 (3'1") 920 (3'1")

Length mm (ft.in)

1650 (5'5")

1560 (5'1") 1610 (5'3") 1625 (5'4")

Height mm (ft.in)

1595 (5'3")

1584 (5'2") 1590 (5'3") 1565 (5'2")

PC400LC-7 PC400LC-6

Reclining angle 72°

36°

PC400LC-7 PC400LC-6

Seat sliding travel

mm (in)

160 (6.3")

100 (3.9")

Console sliding travel

mm (in)

180 (7.1")

120 (4.7")

7

24

OPERATOR COMFORT

SUPER SILENT CAB

The engine sound, swinging sound, and hydraulic relief sound are lowered significantly.

Operate the PC400LC-7 and you will appreciate the low noise design.

Noise at operator’s ear Countermeasure to lower noise

Comparison of noise level at the operator’s ears

* Measured value

Measures taken to reduce noise

1.

Low-noise engine and installation of large-sized low-noise muffler

2.

Large-capacity swing motorSince the swing motor speed is lowered, the swing noise is reduced. The displacement of the swing motor is increased from 160.7 cc/rev to 229.4 cc/rev.

3.

Large-capacity pumpSince the engine speed is decreased, the fan noise and engine noise are reduced.Engine speed: 2,050 rpm 1,850 rpm (–200 rpm)

Displacement of pump: 160

∞

2 cc/rev 190 x 2 cc/rev

4.

Use of cab damper mount

5.

Use of high-rigidity pressed cabImprovement of airtightness of cabPC400LC: 1.5 mmAq (0.06") 6 mmAq (0.24")

Dynamic noise – 6 dB (A)

Swing noise – 4 dB (A)

Relief noise – 6 dB (A)

Optimum arrangement of sound suppressing material

Cab damper mounting

Blocking of holes on floor

Seal between cab and floor

High-rigidity pressed cab

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

Noise working

dB

75*

81* 75.9* 76.7*

Noise swinging

dB (A)

83*

87 — —

Noise relief

dB (A)

75*

81* 82.9* 76.2*

25

7

OPERATOR COMFORT

CAB DAMPER

The revolutionary cab damper mounting is a first in the industry. This cab damper mounting prevents the operator from vibrating even if the machine body vibrates.

Vibration is reduced significantly by the effects of this cab damper mounting and the reinforced deck on both sides.

“dB (VL)” is an index of vibration level. As it is increased, vibration is increased and operator comfort is lowered.

Comparison of cab mount

120

130

110

10090

80

Multi-layer cabviscous damper

Dampermounting

120115

96 94

Vibration of floor under the operator's foot

[dB (VL) ]

Trav

el le

vel

gro

und

Trav

elin

g ov

er o

bsta

cle

with

one

sid

e tr

ack

-5

-2

–5 dB (VL)

Vibration of floor under operator’s feet

(PC400LC-6: 120 dB (VL))

FVPM2753

Floor vibration (When either track rides over object at forward Hi gear)

Multi-layer viscous

Cab damper mount

RubberSilicon oil

Rubber

Silicon Oil

Spring

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

Cab mount Cab damper mounting

Multi-layer viscous



7

26

OPERATOR COMFORT

CIRCULATION OF AIR IN CAB FOR CLEANLINESS

Automatic air conditioner

A 6,900 kcal (SAE) air conditioner is utilized. The bi-level control function keeps the operator’s head and feet cool and warm respectively. This improved air flow function keeps the inside of the cab comfortable throughout the year.

INCREASED CAB PRESSURIZATION

Pressurized cab with air conditioner

The airtight cab is utilized to prevent entry of dust even in dusty environments. Since the airtightness of the cab is improved, the internal pressure is increased to 6.0 mmAq (0.2 inAq) when the air conditioner is operated (in the fresh-air-in mode).

The internal pressure of the cab of PC450LC-6 is increased to 9 mmAq (0.35 inAq) by employing the fixed one-piece glass for the front window. This internal pressure prevents dust from entering the cab.

Comparison of air conditioner

(Measured value)

WASHABLE FLOOR MAT

The flanged floor mat is employed so that the inside of the cab can be washed with water. Since the floor inclines gently toward the door of the cab, water is drained easily. Additional water can be drained off through the draining holes at the front part of the floor under the mat.

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

Type

—

Full-auto

Manual Full-auto Full-auto

Cooling capacity

[SAE] (kcal/h)

6900

6900 6900 6900

Heating capacity

[SAE] (kcal/h)

6500

6500

Pressurized value

[mmAq (inAq)]*

6.0 (0.2) / 10.0 (0.39)

1.5 (0.06) INA INA

27

7

OPERATOR COMFORT

CONVENIENT CAB ACCESSORIES

CONVENIENCE OPTIONS

The rain visor, sun visor, 12-V power supply are optional.

Hot and cool box

Cup holderMagazine rack

FM/AM auto-tuning radio Air conditioner

AshtrayCigarette lighter

Remote intermittent windshield wiper with washerDefroster (Conformed to defrosting standard of ISO)

Rain visor Sun visor (PC400-7 only) (Front and ceiling window)

7

28

OPERATOR COMFORT

COUNTERBALANCE ASSISTED PULL-UP FRONT WINDOW

The front window utilizes an assisted opening method, facilitating front window operation.

Additionally, a front lower window glass storage space is provided in front of rear window.

IMPROVED VISIBILITY

Total blind angles at eye point have been reduced from 97 to 64 degrees.

Roller unit

One-touch lock

Front lower window glass storage space

Front visibilitySince the cab is made by pressed steel, the pillars have proper rigidity and the front blind angle is reduced by about 25%.Ultra wide visibility is obtained.

Right visibilityThe right pillar is eliminated to increase the right visibility.

FVPM2812

Blind angle

Front

97 degree 64 degree

29

8

EASY MAINTENANCE & INSPECTION

RADIATOR AND OIL COOLER

Side-by-side cooling

The radiator and oil cooler are installed side-by-side so they can be removed and installed separately for easy maintenance. In addition, the system efficiency has been improved.

Removal and installation simulated by 3D CAD

Removal and installation of only oil cooler

Removal and installation of only radiator

EASY ACCESS FOR ENGINE INSPECTION

Since the engine-related inspection parts such as the engine oil dipstick, engine oil filler, fuel filter, etc. are centralized on the left side of the engine, the operator can easily maintain them.

Photo may include optional equipment

8

30


ENGINE OIL

The “Eco drain valve” is installed with which the operator can drain the engine oil easily.

FUEL LINE

A fuel strainer is installed between the fuel tank and fuel filter to remove coarse dirt. The additional filter having a water separator function is also standard.The fuel hose joints have highly reliable face seals.The operator can drain water from the fuel system easily with the remote fuel drain valve.

Engine oil drain valve (Eco valve)

Fuel drain valve (Remote mounted) Fuel strainer

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

Fuel strainer Standard

Optional Standard Standard

Fuel drain valve remote mount Standard

Not available INA Not available

Fuel hose joint seal Face seal

Clip INA INA

31

8


FUEL TANK

•

The fuel tank capacity is increased from 605 to 650 liters (160 to 172 U.S. gal).

•

The inside (bottom) of the fuel tank is made of a ZINC plated steel sheet to prevent rust.

•

The fuel filler and strainer are improved so that a large-sized fuel gun can be used and fuel will not spout out while fuel is supplied. Fuel can be supplied automatically (The operator may release the fuel gun while supplying fuel).

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

KobelcoSK450-6

Fuel tank capacity

liter(U.S.gal)

650(172)

605(160)

720(190)

650(172)

650(172)

48(1.9")

(2.2")

130(

5.1"

)

220(

8.7"

)

56

FVPM2828

8

32


ENGINE AND HYDRAULIC OIL FILTER

The replacement interval of the oil and filters is extended by employing high-performance filtration material.

Since the high-performance filtration material has finer fibers and more pores, the dirt capturing capacity of the filter is increased.

(1) Hydraulic oil filterThe replacement interval is increased and the filter size is reduced by using microglass (high-performance filtration material).

(2) Engine oil filterThe filter paper is changed from the cellulose type to strata pore type having higher dirt capturing capacity.

Conventional hydraulic oil filter

New hydraulic oil filter

450

(17.

7")

200

(7.9

")

FZPM2775

Conventional hydraulic oil filter

New hydraulic oil filter

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450/450H

KobelcoSK450-6

Engine oil

h

500

250 250 500 500

Engine oil filter

h

500

250 250 500 500

Hydraulic oil

h

5000

5000 2000 4000 2000

Hydraulic oil filter

h

1000

500 1000 500 500

Fuel filter

h

500

500 500 500

Layer to capturecoarse particles

FWPM2669

Layer to capturemedium particles

Layer to capture fineparticles

33

8


LONG REPLACEMENT INTERVAL PARTS

PC400LC-7

Up to 5000 hour lubricants and filter cost calculation table

PC400LC-6

Up to 5000 hour lubricants and filter cost calculation table

* Replacement interval depends on job condition.

Please fill local parts unit price and lubricant cost per liter (US gal) and calculate parts, lubricants and labor cost.

Interval (hour)

No. of replace-ments

Parts unit

price

Parts cost

Refill capacity

[liter (US gal)]

Amount of lubricants

[liter (US gal)]

Lubricants cost/liter

Lubricants cost

Man hour

(hour)

Total man hour

(hour)

Labor charge

A A x B A x B A x B x C A x C

Engine oil filter 500 101.0 10.0

Engine oil 500 10 53 (14.0) 530 (140)

Fuel filter 500 10 0.5 5

Air cleaner element* 2500 2 0.125 0.25

Hydraulic filter 1000 5 0.5 2.5

Hydraulic oil 5000 1 248 (65.5) 248 (65.5) 2.0 2.0

Hydraulic tank breather 500 10 0.125 1.25

Swing machinery oil 1000 5 16.2 (4.3) 81.0 (21.5) 1.0 5.0

Final drive oil 2000 2 24 (6.3) 48 (12.6) 1.0 2.0

Total 907 (239.6) 28

Interval (hour)

No. of replace-ments

Parts unit

price

Parts cost

Refill capacity

[liter (US gal)]

Amount of lubricants

[liter (US gal)]

Lubricants cost/liter

Lubricants cost

Man hour

(hour)

Total man hour

(hour)

Labor charge

A A x B A x B A x B x C A x C

Engine oil filter 250 201.0 20.0

Engine oil 250 20 41 (10.8) 820 (216)

Fuel filter 500 10 0.5 5

Air cleaner element* 2500 2 0.125 0.25

Hydraulic filter 500 10 0.5 5

Hydraulic oil 5000 1 270 (71.3) 270 (71.3) 2.0 2.0

Hydraulic tank breather 500 10 0.125 1.25

Swing machinery oil 1000 5 21.5 (5.7) 107.5 (28.5) 1.0 5.0

Final drive oil 2000 2 23 (6.1) 46 (12.2) 1.0 2.0

Total 1243.5 (328) 40.5

9

34

SAFETY FEATURES

GLOBAL SAFETY DESIGN

The PC400LC-7 sets the world safety standards.

Attention:“OPG top guard level 2” is the formal name changed by ISO for FOG (or FOGS) .

Cab has capability for OPG top guard level 2 compliance with bolt-on top guard

Tempered green glass

The front glass is tempered green glass having high strength. It also blocks out ultraviolet rays.

Full-cover fan guard and thermal guard

These guards prevent the operator from touching a hot part or the fan during inspection of the engine.

Large-sized steps

Large-sized steps are installed to front and rear so that the operator can get on and off easily.

Retractable-type seat belt

Oil splash prevention wall (Fire wall)

If a hydraulic leak occurs, the bulkhead between the pump chamber and engine compartment prevents the oil from spraying over the hot parts.

Lock lever

This lever locks hydraulic system to prevent operation by mistake. Since the engine neutral start system is utilized, the engine can start only when the lock lever is at the LOCK position.

Anti-skid sheet

The operator does not slip easily during inspection, etc.

Large-sized handrail

The operator can get on and off the machine safely.

Large side mirror

35

9

SAFETY FEATURES

FULLY PRESSED CAB

The newly designed, fully pressed, and reinforced cabis manufactured by a solid press forming process toattain an ideal strong frame structure having high rigid-ity.This cab has capability to comply OPG top guard level 2 (FOG) with bolt-on top guard.

OPG TOP GUARD (OPTION),FRONT FULL HEIGHT GUARD (OPTION)

The optional bolt-on OPG top guard level 2 and front full guard level 2 are available particularly for operations in jobsites where there is high possibility of falling rocks, etc.

OPG top guard Front full height guard

FVPM2747

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450

Bolt-on OPG top guard level 2 capable cab Available

N/A Available Available

FVPM2748AFVPM3209

10

36

ENVIRONMENTAL FEATURES

LOW EMISSION ENGINE

The engine meets Tier 2 emission regulations in USA, and Europe and Japan.

Tier 2 emission regulations

The quantity of NOx and PM (Particulate) must be thefollowing values or below.

Regulation values

PC400LC-7’s discharge amount of NOx and PM are reduced by 29% and 15% compared with than that of PC400LC-6 respectively.

LOW NOISE AROUND MACHINE

PC400LC-7 meets the Noise regulation of EU.

The engine sound, swinging sound, and oil relief sound are lowered significantly by the following countermeasures.

•

High cooling efficiency aluminum oil cooler is used

•

Sound suppression cover is installed to seal between cab and engine room

•

Sound absorbing materials are optionally arranged

•

Noise when swinging is reduced by use of large capacity low-speed swing motor

•

Engine fan revolution reduced

Comparison of dynamic noise

* Measured value

Regulated substancesUnit

EU regulation EPA regulations

Output range of engine

kW 130 – 560 225 – 450

Exhaust gas

CO g/kW-h 5.0 5.0

NOx/HC g/kW-h 6.0/1.0 6.4 (Including HC)

Particulate g/kW-h 0.2 0.2

Tier 2 emission 2002 2001

Compliance of various machines to Tier 2 regulations

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450

KobelcoSK480

Remarks : Conformance : Non conformance

ModelItem

KomatsuPC400LC-7

KomatsuPC400LC-6

CAT345BL II

HitachiZX450

Ambient noise level(Sound power level)

dB

107

109.1* 107.9* 109*

37

10

ENVIRONMENTAL FEATURES

ECONOMY MODE

The Economy mode is an environment-friendly mode:

•

Fuel consumption is reduced

•

Noise is lowered while machine is used at night or in a jobsite adjacent a residential area

•

Discharge of CO

2

should be reduced by 20%

DESIGNED FOR EFFECTIVE USE OF RECYCLABLE RESOURCES

When Eco mode is selected

Fuel consumption

Discharge of CO2

Production

Ratio to Active mode

Ratio to Active mode

Ratio to PC400-6

Reduction by 20%

Reduction by 20%

Equivalent

Heavy duty mode

FVPM3229

Recyclable sound absorbing material made of PET (polyethylene terephthalate) is utilized

The cab ceiling is made of kenaf (natural fiber)

Recyclable material symbols are put on all resin parts

All exterior parts are made of steel

38

11

MULTI-FUNCTION COLOR MONITOR

OVERVIEW

A newly developed Multi-Function Color Monitor has multiple functions, such as Working mode selection,

hydraulic pump oil flow adjustment for matching to attachment, and maintenance interval notice, etc.

Working mode

Service meter

Travel speed

Selector switch

Fuel level

Engine water temperature

Hydraulic oil temperature

Maintenance switch

Working mode selector switch

Travel speed selector switchAutomatic deceleration selector switch

Windshield wiper and washer switch

Screen adjustment switch

Initial screen(2 sec)

Checks before starting(2 sec)

Display cautionwhen

abnormalityfound

Working mode and travel

speed display(2 sec)

Normal screen

Display cautionand error code

when fault occurs

When maintenancetime is exceeded

(30 sec)

Change Working Mode A B L E Setting of travel speed,auto-decel,

wiper and swingholding brake

Maintenance table

Oil flow setting for breakerin B mode

Oil flow setting for attachment

when A and E mode

Selection by input operation

Automatically selected

Brightnessadjustment

OUTLINE of MULTI-FUNCTION COLOR MONITOR

39

11


SIMPLIFIED WORKING MODE

Working Mode Selection

PC400LC-7 working mode is changed from 6 to 4-modes to concentrate hydraulic excavator fundamental performance.

The Multi-Function Color Monitor has Lifting mode in addition to the standard three-mode selection (

A

,

E

, and

B

modes).

HYDRAULIC PUMP OIL FLOW ADJUSTMENT SYSTEM

Hydraulic Pump Oil Flow Adjustment System

When installing attachments (breaker, crusher, etc.) and B, A, or E mode is selected, it is possible to adjust engine and hydraulic pump discharge flow to match attachment characteristics. Selection is possible throughout the LCD (Liquid Crystal Display).

This system also allows throttling of the attachment side discharge flow to provide smooth work equipment movement and compound operation with work equipment and attachment.

Working Mode Application Advantage

A

Active mode • Maximum production/power• Fast cycle times

E

Economy mode • Excellent fuel economy

L

Lifting mode • Lifting capacity is increased by 7%

B

Breaker mode • Optimum engine rpm, hydraulic flow for breaker operation

Flow rate can be selected from menu according to breaker.

(When B-mode is selected)

Flow rate can be set, regardless of menu.

Flow rate can be adjusted when crusher is used.

(When A-mode or E-mode is selected)

Selected with selector switch

40

11


AUTOMATIC THREE-SPEED TRAVEL/LIFTING MODE

Automatic Three-Speed Travel

Travel speed is automatically shifted from high to low speed according to the pressure of the travel. This optional system is available as part of the Multi-Function Color Monitor.

Lifting Mode

When the Lifting mode is selected, lifting capacity is increased by 7 % raising hydraulic pressure.

EQUIPMENT MANAGEMENT MONITORING SYSTEM (EMMS)

EMMS (Equipment Management Monitoring System)

Fault display function

If the engine oil level, cooling water level, etc. is abnormal, it is displayed on the LCD monitor in the operator’s cab.

Machine condition check function

The oil pressure, engine speed, etc. can be displayed on the LCD monitor. With this function, the downtime can be minimized.

High Mid Low

Travel Speed

5.5 km/h(3.4 mph)

4.4 km/h(2.7 mph)

3.0 km/h(1.9 mph)

When abnormal

In check mode

41

11


EMMS MAINTENANCE FUNCTION

Maintenance Function

Monitor informs replacement time of oil and filters on LCD when the replacement interval is reached.

EMMS DATA MEMORY FUNCTION

Maintenance History Data Memory Function

Monitor stores maintenance data, such as engine oil replacement etc.

PASSWORD FUNCTION

Color monitor has password function. For details, please refer “manual for Password setting and cancel”.

Trouble Data Memory Function

Monitor stores abnormalities for effective troubleshooting.

Selection with maintenance switch

Set item/time and current time are displayed.

Time to replace is displayed.

Precautions for setting a passwordOnce the customer sets a password, only he (she) knows it and any distributor cannot find or cancel it. Accordingly, if the customer forgets the set password, the whole monitor must be replaced. When delivering, explain this matter carefully to the customer.

Important

42

11


GREASING INTERVAL EXTENDED

Bushing for Work Equipment

BMRC bushings are used for the boom foot and boom cylinder connecting pin of the work equipment. OMRF bushings are used for the other parts of the work equipment and bucket. CRHF is applied to the bushing end of arm top to lengthen the greasing interval.

Work equipment lubrication interval

unit: hours

BMRC (Beta Matrix Reinforced Copper Alloy)

A bushing made by combining a sintered copper layer impregnated with oil for better fitting and a backing metal. It is used for severe application parts which receive low rocking stresses and high loads to prevent creaking and scuffing because of its excellent sliding characteristics.

OMRF (Ordered Matrix Reinforced Ferrous Alloy)

A bushing made of a hardened phase of hard Ferro-Aluminum having high wear resistance and an Al bronze phase. It has high hardness, high scuff-resistance, and high wear resistance.

CRHF (Carbide Reinforced Hard facing Ferrous Alloy)

A hard alloy is fixed to the end of a bushing by sintering to reduce wear, seizure, and play of the contact surfaces.

Resin made shim

Resin made shims are used for work equipment pin connections (except bucket connections) to reduce noise.

PC400LC-7 PC400LC-6

Bucket pin bushings 50

50

Boom foot and boom cylinder bottom bushings 500

50

Other bushings 500

100

Sintered Al bronze layer impregnated with high-performance lubricating oil

Backing metal (steel) FVPM3247

FVPM3217

Ferro-Aluminum martensite phase

Sintering pores filled with high-performance lubricating oil

Al bronze phase

S45C

Hard alloy

Fixed by sintering

FVPM3215

Changed from steel bushing to OMRF bushing Changed from steel bushing to

BMRC bushing

Arm top: CRHF is fixed to bushing Changed from high tensile strength brass bushing to BMRC bushing

Changed from steel bushing to SCSH bushing FVPM3216

43

12

ATTACHMENTS & OPTIONAL EQUIPMENT

Work equipment availability

Legend: Available

VT : Vertical type pinHT : Horizontal pinSC : Side cutter+adj : Clearance adjustable typeHD : Heavy duty typeSS : Side shroud

SpecItem

PC400LC-7

Deluxe

Lubricating interval

Bucket 50 hours

Boom foot and boom cylinder bottom 500 hours

Others 500 hours

Boom

7060 mm (23'2")

7060 mm (23'2") HD —

7060 mm (23'2") with attachment piping

7060 mm (23'2") HD with attachment piping —

Arm

2400 mm (7'10")

2900 mm (9'6")


3380 mm (11'1")

3380 mm (11'1") HD —


3380 mm (11'1") HD with attachment piping —

4000 mm (13'1")

4800 mm (15'9")

Bucket

1.3 m

3

(1.70 yd

3

) bucket VT w/SC

1.6 m

3

(2.09 yd

3

) bucket HT w/SC

1.9 m

3

(2.49 yd

3

) bucket VT/HT w/SC + adj

44

12


PIPING FOR ONE ATTACHMENT

1. Outline of piping for one attachment

Piping is provided to the top of arm to install one attachment (breaker or crusher etc.) easily.

(1) Low-pressure accumlator

The low-pressure accumulator is installed as standard on the return side to reduce the effects of deterioration of the breaker on the machine body. The optional high-pressure accumulator on the feed side is also available.

(3) Added filter for breaker

The additional filter is installed as standard to the breaker circuit.

(4) Automatic changer valve

The automatic changer valve for selecting single and double operations is installed.

(2) Stop valve

(5) In-line filter

The in-line filters are installed as standard to protect the hydraulic equipment on the machine.

Accumlator (low-pressure)

Added filter for breaker

In-line filter

Stop valve

Control pedalFVPM2850

Low-pressure accumlator

Automatic changer valve

Added filter for breaker

In-line filter

45

12



continued

2. Automatic changeover function for attachments circuit

Automatic changeover function is added to attachment circuit by selection of working mode.

3. Function of adjusting oil flow amount in attachment with multi-color monitor

With the multi-color monitor, the operator can select oil flow amount matched to the characteristics of the

installed attachment, watching the liquid crystal display panel in the operator’s cab.

When Selecting A or E modeDouble-acting attachmnent circuit, two-pump discharge and high pressure safety valve are selected.(When simultaneous operation, oil flow to attachment is throttled)

When Selecting B mode Single-action attachment circuit, one-pump discharge and low-pressure safety valve are selected.

Breaker (B) mode

Oil flow amount other than the left can be selected.

Oil flow amount matched to installed breaker can be selected.

Selection of oil flow amount

46

12



continued

Detail of Control

The throttle EPC valve is installed on the upstream side of the attachment PPC valve. If the operator adjusts the oil flow amount on the monitor, the EPC valve is throttled (the pressure is lowered) to adjust the flow amount.

If the boom is raised and the attachment is operated simultaneously, the oil flow amount on the attachment side is reduced automatically. With this function, the operator can move the work equipment smoothly (in the “A” or “E” mode).

47

13

INTERCHANGEABILITY

Interchangeability between PC400LC-7 and PC400LC-6

: Interchangeable : Not interchangeableDevice Interchange Reason for non interchangeable

Unit

Engine ass’y New Current Tier 2 emission certified. Model changed (SAA6D125E

←

SA6D125E).Output increased (330 HP

←

228 HP). Fan diameter changed ø870 (34.3")

←

ø850 (33.5").

Main pump ass’y New Current Model changed (HPV190 + 190

←

HPV160 + 160). Pump capacity changed (190 cc/rev

←

160 cc/rev). TVC replaced with PC valve. LS-EPC valve mounted on pump.

Main valve ass’y New Current Pump merge-divider valve assembly changed (Equipped with built-in self-pressure reducing valve). Boom lock valve and lift check valve mounted on valves. Main relief pressure changed.

Swing motor ass’y New Current Large capacity motor used (229.4

←

160.7 cc/rec). Common with PC300-7Boom cylinder New Current BMRC bushing (Greasing interval: 500 H).

Arm cylinder New CurrentShapes of wear ring, cushion plunger, and cast bottom changed. Piping changed.BMRC bushing (Greasing interval: 500 H). Min. length reduced.

Bucket cylinder New Current Min. length reduced. Stroke changed. OMRF bushing (Greasing interval: 250 H).Swivel joint New Current Port position changed. Common with PC300-7.Swing circle New Current Bolt length changed.Swing machinery New Current Reduction ratio changed.Idler New Current Weight reduced.Idler cushion New Current Spring changed.Track roller New CurrentCarrier roller New Current Size reduced.Shoe New Current Square nut utilized.Final drive New Current Reduction ratio increased.Travel motor New Current Travel motor capacity changed (200 cc/rev

←

270 cc/rev)Sprocket New Current

Cooling ass’y New Current Aluminum oil cooler used. Side-by-side cooling system utilized. Air cooled aftercooleer utilized.

Operator cab New Current New designOperator seat New Current Sliding distance increased. Color and design of seat changed (Same with PC200-7).Hydraulic tank New Current Size reduced.Fuel tank New Current Capacity increased (650

l

←

605

l

)Boom ass’y New Current BMRC bushing (Greasing interval: 500 H).Arm ass’y New Current Cylinder boss position changed. OMRF bushing (Greasing interval: 500 H).Bucket ass’y New Current CRHF bushing (Greasing interval: 250 H).Quarry bucket ass’y New Current Corner tooth utilized. Tooth installation angle changed. CRHF bushing.Revolving frame New Current Structure changed.

Track frame New Current Installation of carrier roller different. Installation of swivel different.

Machine cab New Current New designController New Current New systemMonitor New Current New design (Multi-color monitor). Work mode changed.Work equipment PPC valve New CurrentTravel PPC valve New CurrentEngine control New Current Depends on engine.

Solenoid valve New Current New 8-spool valveDT connector utilized.

Air conditioner New Current Automatic air conditioner utilized.Counterweight New Current Length changed.

Cons

umab

le p

arts

Engine oil filter New Current Replacement interval changed (500 H

←

250 H). Common with PC600-7 and PC750-7

Hyd. oil return filter New Current Replacement interval changed (1000 H

←

500 H). Overall length reduced.

Fuel filter New Current Depends on engine. Common with PC600-7 and PC750-7Air cleaner element New Current Model changed. Size increased (diameter 15 in

←

14 in)Fan belt New Current Length changed.Hyd. hose New Current Length and hydraulic line changed.Bucket tooth New CurrentQuarry bucket tooth New CurrentBucket adapter New CurrentQuarry bucket adapter New Current Installation angles of corner tooth and tooth changed.Side cutter New CurrentSide shroud New Current Installation structure changed.

48

14

COMPETITIVE SPECIFICATIONS

MANUFACTURER Komatsu Komatsu CAT John Deere HitachiMODEL PC400LC-7 PC400LC-6 345BL-2 450CLC ZX450LC

Operating Weight lb 99,661 95,147 100,400 104,000 101,900

Net FWHP @ RPM 330@1850 306@2050 321@2000 316@1800 314@1800

Max. Oil Flow gpm 2 x 91 2 x 86 2 x 95.1 2 x 100 2 x 95.1

Max. System Pressure PSI 5,400 5,050 4,980 4,410/4,620 4,410/4,620

Swing Speed rpm 9.0 9.3 8.6 9 9

Max.Travel Speed mph 3.4/2.7/1.9 3.4/2.8/2.0 2.7/np/np 3.4/na/2.1 3.4/na/2.1

Max. Drawbar Pull lb 73,880 73,880 74,380 79,590 71,600

Drawbar Pull/ .74 .78 .74 .77 .70Operating Weight Ratio

Max. Crowd Force - Arm lb 46,080 43,210 40,100 40,026 43,700

Max. Digging Force - Bucket lb 53,790 50,490 52,200 53,028 52,500

Max. Lift Capacity (F), GL lb 28,700@25' 27,100@25' 25,850@25' 27,300@25' 27,900@25'

Max Lift Capacity (S), GL lb 16,700@25' 15,800@25' 16,250@25' 17,500@25' 17,400@25'

Fuel Tank Capacity gal 172 160 190 171 171.7

Hydraulic Tank Capacity gal 65.5 71.3 55 74 74

Overall Track Length 17'7" 17'7" 17'7" 17'11" 17'11"

Length of Track on Ground 14'3" 14'3" 14'3.6" 14'8" 14'8"

Number of Carrier 2 / 8 2 / 8 2 / 9 3 / 9 3 / 9and Track Rollers

Max. Digging Height 35'10" 35'10" np 36'8" 36'4"

Max. Dumping Height 24'10" 24'10" 24' 25'6" 25'2"

Max. Digging Depth 25'8" 25'6" 27'4" 27'1" 25'6"

Max. Vertical Wall 22'6" 22'6" 21'7" 23'1" 21'10"Digging Depth

Max. Depth 25'2" 25' 25'11" 26'8" 25'for 8' Level Bottom

Max. Digging Reach at 38'9" 38'9" 40'9" 40'3" 38'9"Ground Level

Min. Swing Radius 15'6" 15'8" np 15'9" 15'11"of Implement

49

14

COMPETITIVE SPECIFICATIONS

PC400LC-7 vs. COMPETITIVE MACHINES

Continued

MANUFACTURER Komatsu Link-Belt Volvo Case KobelcoMODEL PC400LC-7 460LX EC460B CX460 SK480LC

Operating Weight lb 99,661 101,200 102,800 101,257 108,045

Net FWHP @ RPM 330@1850 316@1950 306@1900 316@1950 315@2000

Max. Oil Flow gpm 2 x 91 2 x 95.1 2 x 91 2 x 95.1 2 x 97.7

Max. System Pressure PSI 5,400 4,550/4,970 4,550/4,980 4,554/4,975 4,550/4,980

Swing Speed rpm 9.0 9 8.5 9 9

Max.Travel Speed mph 3.4/2.7/1.9 3.3/na/1.9 3.0/na/1.8 3.3/na/1.9 3.5/na/2.2

Max. Drawbar Pull lb 73,880 78,860 72,990 78,908 90,600

Drawbar Pull/ .74 .78 .71 .78 .84Operating Weight Ratio

Max. Crowd Force - Arm lb 46,080 46,310 46,970 51,481 48,100

Max. Digging Force - Bucket lb 53,790 60,700 54,900 60,698 57,500

Max. Lift Capacity (F), GL lb 28,700@25' 28,900@25' 31,480@25' 28,964@25' 29,990@25'

Max Lift Capacity (S), GL lb 16,700@25' 16,400@25' 20,380@25' 16,483@25' 18,470@25'

Fuel Tank Capacity gal 172 161 181 161 172

Hydraulic Tank Capacity gal 65.5 58 71 58 107

Overall Track Length 17'7" 17'11" 17'7" 17'11" 17'11"

Length of Track on Ground 14'3" 14'5" 14'4" 14'5" 14'5"

Number of Carrier 2 / 8 2 / 9 2 / 9 2 / 9 2 / 9and Track Rollers

Max. Digging Height 35'10" 36'7" 36' 36'7" 35'11"

Max. Dumping Height 24'10" 25'5" 25'1" 25'5" 24'11"

Max. Digging Depth 25'8" 25'4" 25'3" 25'4" 25'7"

Max. Vertical Wall 22'6" 21'7" 22'5" 21'7" 22'10"Digging Depth

Max. Depth 25'2" 24'10" 24'9" 24'10" 25'2"for 8' Level Bottom

Max. Digging Reach at 38'9" 38'7" 38'8" 38'7" 38'10"Ground Level

Min. Swing Radius 15'6" np 16'8" 16'4" 16'10"of Implement

This information has been gathered to provide data on the performance of KOMATSU and competitive machines under actual job conditions. Every effort was made to ensure reliable results. However, because of the many variables peculiar to each job (including material characteristics, operator effi-ciency, labor and other costs, haul road conditions and altitude), neither KOMATSU LTD., nor any of its subsidiaries or distributors can or does warrant expressly or implicitly that Komatsu or competitive equipment referred to will achieve the performance or incur the costs indicated under other, though similar, circumstances.

The information contained herein is intended for circulation only to Komatsu employees and to those distributor employees, whose duties require knowledge of such reports and intended solely for the information and training of these readers. UNAUTHORIZED USE OF THIS DOCUMENT IS HEREBY PROHIBITED AND THOSE RESPONSIBLE FOR SUCH USE SHALL BE SOLELY RESPONSIBLE FOR ANY DAMAGES WITH THIRD PARTIES THAT MAY INCUR AS A RESULT OF SUCH USE. Any reproduction of this release without the foregoing explanation is prohibited.

Materials and specifications are subject to change without noticeis a trademark of Komatsu Ltd. Japan

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Ficha Tecnica Komatsu 400 -7