komatsu PC1250SP-8R, PC1250-8R SPECIFICATIONS

www.Komatsu.com

CEN00176-03 Materials and specifications are subject to change without notice.

is a trademark of Komatsu Ltd. Japan.

Printed in Japan 200807 IP.As(10)

HORSEPOWER

Gross: 514 kW 688 HP @ 1800 rpm

Net: 502 kW 672 HP @ 1800 rpm

OPERATING WEIGHT

Backhoe: 106500–110700 kg

234,790–244,050 lb

Loading shovel: 110900 kg

244,490 lb

Photo may include optional equipment.

PC1250/1250SP-8R BACKHOE
PC1250-8R LOADING SHOVEL

PC

1250

STANDARD EQUIPMENT

OPTIONAL EQUIPMENT

ENGINE AND RELATED ITEMS:

● Air cleaner, double element, dry

● Variable speed cooling fan, with fan guard

● Engine, Komatsu SAA6D170E-5

ELECTRICAL SYSTEM:

● Alternator, 60 amp, 24 V

● Batteries, 220 Ah, 2 x 12 V

● Starting motors, 11kW x 2

● Working lights-2 boom, 2 cab top front, 1 machine cab bottom,

1 cab LH(Step light with timer)

● Auto decelerator

UNDERCARRIAGE:

● 700 mm 28'' double grouser

● 8 track/3 carrier rollers (each side)

● Hydraulic track adjusters (each side)

● Track guiding guard (each side)

GUARDS AND COVERS:

● Dust-proof net for radiator and oil cooler

● Pump/engine room partition wall

● Travel motor guards

● Revolving frame under cover (Heavy-duty)

OPERATOR ENVIRONMENT:

● Damper mount, all-weather, sound-suppressed cab with tinted

safety glass windows, lockable door, intermittent window wiper
and washer, floormat, cigarette lighter and ashtray

● Instrument panel with electronic display/monitor system,

electronically-controlled throttle dial, electric service meter, gauges
(coolant temperature, hydraulic temperature and fuel level),
caution lights (electric charge, engine oil pressure, and air cleaner
clogging), indicator lights (engine preheating and swing lock light)
level check lights (coolant, engine oil, and hydraulic oil level), self­diagnostic system with trouble data memory

● Rearview mirrors, left and right

● Seat, fully adjustable with suspension

● Cab with fixed front window

HYDRAULIC CONTROLS:

● Fully hydraulic, with Electronic Open-Center Load-Sensing

(EOLSS) and engine speed sensing (pump and engine mutual
control system)

● One gear pump for control circuit

● Two axial piston motors for swing with single-stage relief valve

● One axial piston motor per track for travel with counter balance

valve

● Three variable capacity piston pumps

● Three control valves, 5+4+4 spools (boom, arm, bucket, swing,

and travel)

● Control levers, wrist control levers for arm, boom, bucket, and

swing with PPC system

● Control levers and pedals for steering and travel with PPC system

● Oil cooler

● In-line high pressure filters

● Shockless boom control

● Two-mode setting for boom

DRIVE AND BRAKE SYSTEM:

● Brakes, hydraulic lock travel brakes, oil disc parking

● Hydrostatic two travel speed system with planetary double

reduction final drive

OTHER STANDARD EQUIPMENT:

● Automatic swing holding brake

● Corrosion resister

● Counterweight, 18000 kg 39,680 lb

● Horn, air

● Marks and plates, English

● Paint, Komatsu standard

● Vandalism protection locks

● Wide catwalk

● Large handrails

● One-touch engine oil drainage

● PM tune-up service connector

● Travel alarm

● Rear reflector

● Anti-slip plates

● Alternator, 90 Amp, 24 V

● Arms (Backhoe):

—3400mm 11'2'' arm assembly
—3400mm 11'2'' HD arm assembly
—3400mm 11'2'' SP arm assembly
—4500mm 14'9'' arm assembly
—4500mm 14'9'' HD arm assembly
—5700mm 18'8'' arm assembly

● Arms (Loading shovel):

—3800mm 12'6'' arm assembly

● Auto air conditioner

● Automatic grease system, Lincoln 18 ltr

● Booms (Backhoe):

—7800mm 25'7'' SP boom assembly
—9100mm 29'10'' boom assembly

● Booms (Loading shovel):

—5300mm 17'5'' boom assembly

● Cab with pull-up type front window

● Communication system for VHMS (Orbcomm)

● General tool kit

● Grease gun, air pump

● Heater

● Interconnected horn and flashing light

● Radio AM/FM

● Seat belt 78 mm 3''

● Shoes:

—1000 mm 39.4'' double grouser

● Spare parts for first service

● Track roller guard (full length)

● Track frame undercover (center)

● Vehicle Health Monitoring System (VHMS)

HYDRAULIC EXCAVATOR

2

WALK-AROUND

H YDRAULIC E X CAVATOR

HYDRAULIC EXCAVATOR

PC1250-8R

PC1250-8R0

HORSEPOWER

Gross: 514 kW 688 HP @ 1800 rpm

Net: 502 kW 672 HP @ 1800 rpm

OPERATING WEIGHT

Backhoe

106500 – 110700 kg

234,790 – 240,050 lb

Loading shovel

110900 kg

244,490 lb

Ecology and Economy Features

● High Power Komatsu SAA6D170E-5 Engine

• Powerful turbocharged and air-to-air aftercooled Komatsu SAA6D170E-5
engine provides 502 kW 672 HP.

• Offers high power and low fuel consumption.

• Equipped with electronically controlled variable speed fan.

● Economy Mode Four-level Setting

Enables operator to select the appropriate
Economy mode level to match production
requirement with lowest fuel consumption.

● Reduction of Ambient Noise

• Electronically controlled variable speed fan drive

• Large hybrid fan

See page 4.

Working Environment

● Large Comfortable Cab

• Low noise and vibration with cab damper mounting

• Large-capacity air conditioner (optional)

• Pressurized cab prevents external dust from entering

• OPG top guard level 2 (by ISO 10262 standard)
capable with optional bolt-on top guard.

See pages 8, 9.

Advanced Monitor Features

• Machine condition can be checked with
Equipment Management Monitoring
System (EMMS). See page 11.

• Two working modes combine with heavy

lift mode for maximum productivity.

See page 5.

Photo may include
optional equipment.

Easy Maintenance

● Easy Cleaning of Cooling Unit

Fan reverse-rotation function
facilitates clogged radiator
cleaning.

● Centralized Arrangement of Engine
Checkpoints

● Anti-slip Plates for improved foot
traction

● Large Handrail, Step and Catwalk

provide easy access to the engine
and hydraulic equipment.

● Electric Priming Pump installed.

See page 10.

● Highly Reliable Electronic Devices

Exclusively designed electronic devices have
passed severe testing.

• Controllers • Sensors • Connectors

• Heat resistant wiring • Circuit breaker

● Boom Foot Hoses are arranged under the boom
foot, improving hose life and safety.

See pages 6, 7.

Productivity Features

● Heavy Lift Mode

The heavy lift mode increases lifting force by 10%.

● Large Digging Force

High operation efficiency with large digging force for
severe applications.

● Two-mode Setting for Boom

Switch selection allows either powerful digging or
smooth boom operation.

● Twin Swing Motor System provides excellent swing
performance, even on slopes.

● Large Drawbar Pull and Steering Force

provide excellent mobility.

● Swing Priority Mode

The swing priority mode improves efficiency
for loading dump trucks at 90˚ or 180˚.

● Shockless Boom

Switch selection reduces chassis
vibration after sudden stops.

See page 5.

3

Excellent Reliability and
Durability

● Strengthened Quarry Bucket Provided

Outstanding Wear-resistance (optional)

● XS Bucket Teeth offers superior penetration

and long-term sharpness.

● The fuel reliability is improved by installing 2 Fuel

Main-Filters and Water Separator working against

low grade fuel.

● Fuel Pre-filter with water separator equipped as

standard.

● O-ring Face Seals, which have excellent sealing

performance, are used for the hydraulic hoses.

● High-pressure In-line Filtration

The cool-running hydraulic system is protected with
the most extensive filtration system available, including
a high pressure in-line filter for each main pump.

54

PRODUCTIVITY & ECOLOGY FEATURES

HYDRAULIC EXCAVATOR

PC1250-8R0

Working Mode Application Advantage

Power

● Maximum production/power

P

Mode ● Fast cycle time

E Economy

● Good cycle time

Mode ● Good fuel economy

Working Mode Selection

Power and Economy Mode

The PC1250-8R excavator is equipped with two working

modes. Each mode is designed to match engine speed,

pump flow, and system pressure to the current application,

giving the operator flexibility to match equipment performance

to the job at hand.

High Power Komatsu SAA6D170E Engine

Powerful turbocharged and air-to-air aftercooled Komatsu
SAA6D170E-5 engine provides 502 kW 672 HP.
This Komatsu SAA6D170E engine actualizes high-power to
low fuel consumption with the optimum fuel injection by
electronic heavy duty HPCR (High Pressure Common Rail)
fuel injection system.

Electronically Controlled Variable Speed Fan
Contributes to Low Fuel Consumption and Low
Noise

The electronic control system sets
the rotational speed of the cooling
fan according to the coolant and
hydraulic oil temperature; effectively
uses the engine output to prevent
wasteful fuel consumption; and
reduces noise during low-speed fan
rotation.

Lower and Economical Fuel Consumption Using
Economy Mode

Enables operator to set the Eco
mode to up to four levels
according to working conditions
so that production requirement is
achieved at lowest possible fuel
consumption.

Reduction of Ambient Noise

Reduced noise by adoption of an electronically controlled
variable speed fan drive, large hybrid fan, low-noise muffler.

(E0,E1,E2,E3)

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 advancements in technology.

To achieve both high levels of productivity and

economical performance, Komatsu has

developed the main components with a total

control system. The result is a new generation

of high performance and environment friendly

excavators.

This is an image photo:
may differ from the
actual engine.

Heavy Lift Mode

Gives the operator 10% more lifting force on the boom when
needed for handling rock or heavy lifting applications.

Swing Priority Setting

The swing priority setting allows the operator to use the same
easy motion for 180˚ loading as 90˚ loading operations. By
altering the oil flow, this setting allows you to
select either boom or swing
as the priority for
increased production.

Power Mode

Economy Mode

Heavy Lift Mode

Swing Priority Mode

Large Digging Force

Thanks to the high engine output and an excellent hydraulic
system, this machine demonstrates powerful digging force.

Maximum arm crowd force (ISO):

412 kN 42.0 ton

Maximum bucket digging force (ISO):

479 kN 48.8 ton

Large Drawbar Pull and Steering Force

Since the machine has a large drawbar pull and a high
steering force, it demonstrates excellent mobility even when
it is being used on inclined sites.

Two-mode Setting for Boom

Smooth mode provides easy operation for gathering blasted

rock and scraping operations. When maximum digging force is
needed, switch to power mode for more effective excavating.

Shockless Boom Control

The PC1250-8R boom circuit features a shockless valve
(double-check slow return valve) to automatically reduces
the amount of vibration present when operating the boom.
Operator fatigue is reduced (which can improve safety and
productivity), and spillage caused by vibration is minimized.

H YDRAULIC E X CAVATOR

PC1250-8R

Hydraulic system
controller

Main pump

Pump for fan

Electronic control
unit for engine

Hydraulic control valve

LCD color monitor

Electronically controlled
variable speed fan

Engine
Heavy duty HPCR
Common Rail)

system

(High Pressure

Boom raise

Smooth
mode

Powe r
mode

Extend and
retract