komatsu PC35MR-3, PC27MR-3, PC18MR-3, PC55MR-3, PC45MR-3 SPECIFICATIONS

OPERATING WEIGHT

PC18MR-3 1,780 kg 3,920 lb
PC20MR-3 2,155 kg 4,750 lb
PC27MR-3 2,890 kg 6,370 lb
PC30MR-3 3,140 kg 6,920 lb
PC35MR-3 3,575 kg 7,880 lb
PC45MR-3 4,755 kg 10,480 lb
PC55MR-3 5,160 kg 11,380 lb

COMPACT

HYDRAULIC EXCAVATOR

PC18MR-3 PC20MR-3
PC27MR-3 PC30MR-3
PC35MR-3 PC45MR-3
PC55MR-3

COMPACT HYDRAULIC EXCAVATOR

MR-3 SERIES

3

MR-3 SERIES C OMPACT H YDRAULIC E XCAVATOR

2

WALK-AROUND

OPERATING WEIGHT

PC18MR-3 1,780 kg 3,920 lb

PC20MR-3 2,155 kg 4,750 lb

PC27MR-3 2,890 kg 6,370 lb

PC30MR-3 3,140 kg 6,920 lb

PC35MR-3 3,575 kg 7,880 lb

PC45MR-3 4,755 kg 10,480 lb

PC55MR-3 5,160 kg 11,380 lb

Photo may include optional equipment

Photo may include optional equipment

Performance and Versatility

• Komatsu HydrauMind hydraulic system

• Automatic load sensing two-speed travel

• Standard auxiliary hydraulics

• Integrated counterweight and tight tail swing

Service and Maintenance

• Wide opening engine hood and side covers

• Side-by-side radiator and oil cooler are easy to inspect and clean

• Extended lubrication and engine oil replacement intervals reduce maintenance and down time

• Tilt-forward operator’s station provides full access to engine

Operator Comfort

• Large operator platform

• Fully adjustable suspension seat

• Pilot proportional joystick controls

• Large monitor panel

• Easy entry and egress

• Low noise

Value, Durability, and Strength

• High strength X-track frame

• Castings are used for boom foot, tip, and swing yoke

• Single large diameter swing pin

• Three track options: rubber, steel, and Roadliner

• O-ring face seal hydraulic fittings

• Moisture/dust resistant electrical connectors

General Features

• Two-post ROPS canopy or ROPS cab

• Neutral engine start system

• Excellent visibility enhances job site awareness

• Low emission Komatsu engine with dual element air cleaner

• One key operates the ignition and all machine locks

3m 10'
Rating at max. reach

Max. drawbar pull

PC55MR-3

Auxiliary flow

PC55MR-3

PC55MR-3

Max. digging height
Max. digging depth
Max. digging reach

at ground level
Loading height

PC55MR-3

COMPACT HYDRAULIC EXCAVATOR

MR-3 SERIES

5

MR-3 SERIES C OMPACT H YDRAULIC E XCAVATOR

4

PRODUCTIVITY FEATURES

Tight Tail Swing

Operator is able to focus on the work in front of them and

worry less about a rear swing impact, even in confined areas

with only an 80mm 3" projection over the tracks.

Confined Job Site
Advantage

Operator can focus on digging

and improve productivity,

because they can worry less

about obstacles to the rear of the

machine, such as parked cars,

walls and trees.

PC18MR-3 2,070mm 6'9"*

PC20MR-3 2,250mm 7'5"*

PC27MR-3 2,515mm 8'3"*

PC30MR-3 2,415mm 7'11"*

PC35MR-3 2,550mm 8'4"*

PC45MR-3 2,830mm 9'3"*

PC55MR-3 2,800mm 9'2"*

* : When boom swing

CLSS HydrauMind Hydraulic System

When two or more actuators are operated simultaneously,

the pressure-compensated CLSS system ensures each

actuator works according to its control input, regardless of

the size of the load. This gives the operator precise control

at all times.

Working Ranges

Digging Force

Automatic Two-speed Travel

The travel speed selector switch installed on the blade control

allows the operator to

engage high speed trav-

el. Once engaged the

system automatically

senses he travel load

and shifts between high

speed and low speed

travel.

Stability

The MR-3 series offers exceptional lifting capacity and stabil-

ity in a tight tail machine.

Auxiliary Flow

Max. digging height
Max. digging depth
Max. digging reach

at ground level
Loading height

PC27MR-3

mm ft.in.

Max. crowd force: Arm
Max. digging force: Bucket

kg lb

Drawbar Pull

Lifting capacity comparison

The conditions of this comparison are a standard arm, sideways, blade on
ground, and at a height of 0m (ground level).

5000 16'5"
3110 10'2"

5170 17'0"

1805 5'11"

PC35MR-3

PC18MR-3

PC30MR-3

PC45MR-3

PC45MR-3
2100 4630
3050 6720

PC35MR-3

PC27MR-3

PC18MR-3

PC30MR-3

Auxiliary flow

ltr/min USgal/min

PC45MR-3

70 18.5

PC35MR-3

PC27MR-3

PC18MR-3

PC30MR-3

Max. drawbar pull

kg lb

PC45MR-3
3400 7500

PC35MR-3

PC27MR-3

PC18MR-3

PC30MR-3

3m 10'

Rating at max. reach

kg lb

PC45MR-3
580 1280
345 760

PC35MR-3

PC27MR-3

PC18MR-3

PC30MR-3

3615 11'10"
2160 7'1"

3935 12'11"

1220 4'0"

1010 2230
1620 3570

35 9.2

1700 3750

220 480
185 410

Expandable undercarriage (PC18MR-3)

The PC18MR-3 can pass through narrow space due to nar-

row width and undercarriage can be expanded for good sta-

bility during excavation.

1280mm

" 

expanded

990mm

!!

reduced

PC55MR-3

5515 18'1"
3350 12'0"

5575 18'3"

1945 6'5"

4480 14'8"
2550 8'4"

4550 14'11"

1650 5'5"

5945 19'6"
3800 12'6"

6070 19'11"

1930 6'4"

4840 15'11"
2760 9'1"

4910 16'1"

1700 5'7"

2200 4850
3460 7630

1500 3310
2230 4920

2440 5380
3980 8770

1800 3970
3000 6610

70 18.5

4280 9440

50 13.2

3200 7050

70 18.5

4280 9440

70 18.5

3400 7500

995 2190
505 1110

1005 2220

435 960

370 820
245 540

365 800
220 480

PC20MR-3
4000 13'1"
2280 7'6"

4000 13'1"

1430 4'8"

PC20MR-3

1390 3065
1920 4235

Max. crowd force: Arm
Max. digging force: Bucket

PC20MR-3

35 9.2

PC20MR-3

2060 4540

PC20MR-3

285 630
240 530

Max. digging height

Loading height

Max. digging reach

at ground level

Max. digging depth

Max. reach

W