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Komatsu PC1250-8R User Manual

Komatsu PC1250-8R
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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), self-
diagnostic 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
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Komatsu PC1250-8R Specifications

General IconGeneral
BrandKomatsu
ModelPC1250-8R
CategoryExcavators
LanguageEnglish

Summary

Standard Equipment

Engine and Related Items

Covers engine type, aspiration, and cooling fan.

Electrical System

Covers alternator, batteries, starting motors, and working lights.

Undercarriage

Details track shoes, rollers, adjusters, and guards.

Guards and Covers

Lists dust nets, pump/engine partition, travel motor guards.

Operator Environment

Describes the cab, instrument panel, and seat features.

Optional Equipment

Arms (Backhoe)

Lists available arm lengths for backhoe configuration.

Arms (Loading Shovel)

Lists available arm lengths for loading shovel configuration.

Booms (Backhoe)

Lists available boom lengths for backhoe configuration.

Booms (Loading Shovel)

Lists available boom lengths for loading shovel configuration.

Productivity Features

Heavy Lift Mode

Increases lifting force by 10%.

Large Digging Force

High operation efficiency with large digging force.

Two-mode Setting for Boom

Allows powerful digging or smooth boom operation.

Twin Swing Motor System

Provides excellent swing performance, even on slopes.

Large Drawbar Pull and Steering Force

Provides excellent mobility.

Swing Priority Mode

Improves efficiency for loading dump trucks.

Shockless Boom

Reduces chassis vibration after sudden stops.

Reliability and Durability

Strengthened Quarry Bucket

Optional bucket with outstanding wear-resistance.

High-pressure In-line Filtration

Protects hydraulic system with extensive filtration.

Easy Maintenance

Easy Cleaning of Cooling Unit

Fan reverse-rotation facilitates radiator cleaning.

Centralized Engine Checkpoints

Simplifies engine inspection and maintenance.

Anti-slip Plates

Provides improved foot traction on working surfaces.

Large Handrails, Steps, and Catwalk

Provides easy access to engine and hydraulic equipment.

Electric Priming Pump

Facilitates bleeding air from the fuel system.

Working Environment

Large Comfortable Cab

Offers an exceptionally comfortable operating environment.

Advanced Monitor Features

EMMS Machine Condition Monitoring

Allows checking machine condition via EMMS.

Komatsu Technology

High Power Komatsu SAA6D170E Engine

Powerful engine providing high power with low fuel consumption.

Electronically Controlled Variable Speed Fan

Contributes to low fuel consumption and reduced noise.

Economy Mode Four-level Setting

Operator selects appropriate mode for lowest fuel consumption.

Reduction of Ambient Noise

Achieved via variable speed fan, hybrid fan, and low-noise muffler.

Working Mode Selection

Power and Economy Mode

Matches engine speed, pump flow, and system pressure to application.

Heavy Lift Mode

Provides 10% more lifting force for heavy lifting applications.

Swing Priority Setting

Alters oil flow to prioritize boom or swing for production.

Reliability Features

Boom Foot Hoses

Arranged under boom foot to reduce bend, extending hose life.

Strengthened Boom and Arm

High tensile strength steel structure for durability and stress resistance.

High-pressure In-line Filtration

Extensive filtration system reduces failures caused by contamination.

Metal Guard Rings

Protect hydraulic cylinders and improve reliability.

Sturdy Undercarriage

Strengthened for excellent reliability on rocky or blasted ground.

Sturdy Guards

Shield travel motors and piping against damage from rocks.

O-ring Face Seal

Improved sealing performance for hydraulic hoses.

Heat-resistant Wiring

Utilized for engine and major component electrical circuits.

Fuel Pre-filter (with Water Separator)

Removes water and contaminants from fuel to enhance reliability.

Fuel Main-filters

Remove contamination and sludge, improving fuel system reliability.

Additional Water Separator

Removes water from fuel, improving fuel system reliability.

Strengthened Quarry Bucket

Outstanding Wear-resistance (Optional)

Bucket for quarry use, impact and wear resistant.

Koma-hard Materials

Wear-resistant, reinforced materials providing long-term hardness.

XS Tooth Features

Superior digging, long sharpness, easy replacement.

Working Environment

Large Comfortable Cab

Exceptionally comfortable operating environment with full flat reclining seat.

Pressurized Cab

Prevents external dust entry with optional AC and higher air pressure.

Low Noise Design

Remarkably reduced noise from engine, swing, and hydraulic relief.

Low Vibration with Cab Damper Mounting

Improved damper mount system reduces operator seat vibration.

Washable Cab Floormat

Easy to keep clean with flanged design and drainage holes.

Safety Features

Step Light with Timer

Provides light to allow safe entry/exit from the machine.

Multi-position Controls

PPC levers allow comfortable, precise control with adjustable positioning.

Pump/Engine Room Partition

Prevents oil spray on the engine if a hydraulic hose bursts.

Anti-slip Plates

Spiked plates on working surfaces provide anti-slip performance.

Interconnected Horn and Warning Light

Gives visual and audible notice of excavator operation.

Easy Maintenance Features

Easy Checking and Maintenance

Wide walkway and grouped points facilitate inspection and maintenance.

Wide Catwalk, Large Step and Handrails

Ensures easier, safer operator cab access and maintenance checks.

Easy Cleaning of Radiator

Hydraulically driven fan can be reversed for radiator cleaning.

Reduced Maintenance Costs

Longer intervals for hydraulic oil, filters, and engine oil reduce costs.

Dust Indicator

Warns of air cleaner clogging in 5 steps.

Convenient Utility Space

Provides space to store tools and spare parts.

Electric Priming Pump

Easily accomplishes bleeding air from the fuel system.

High-Quality EMMS Self-diagnostic System

Abnormality Checking Function

Monitors operational status to minimize machine downtime.

Maintenance History Memory Function

Stores maintenance records and warns when service is due.

Trouble Data Memory Function

Stores trouble data for future troubleshooting and service diagnosis.

VHMS (Vehicle Health Monitoring System)

Optional VHMS System

Monitors component health, enables remote analysis for reduced costs.

Specifications

Engine Specifications

Details engine model, displacement, bore, stroke, and horsepower.

Drives and Brakes

Covers steering control, drive method, travel motor, and brake systems.

Undercarriage

Details track frame, adjuster, and number of rollers/shoes.

Hydraulic System

Describes pump type, flow, control system, and relief valve settings.

Coolant and Lubricant Capacity

Lists capacities for fuel tank, radiator, engine, and hydraulic tank.

Operating Weight

Provides operating weight and ground pressure for different configurations.

Backhoe Dimensions

Dimensions for boom, arm, and overall machine height/length.

Working Range

Details digging height, depth, reach, and forces for various arm/boom combinations.

Backhoe Bucket, Arm, and Boom Combination

Shows bucket capacity, width, weight for combinations.

Swing System

Covers driven by, reduction, lubrication, lock, and swing speed.

Loading Shovel Dimensions

Dimensions Overview

Provides dimensional data for the loading shovel configuration.

Loading Shovel Working Range and Support Selection

Working Range Table

Details reach and dump height for various bucket and arm combinations.

Bucket and Arm Selection

Recommended combinations for bucket capacity, width, and weight.

Lifting Capacity

PC1250-8R Lifting Capacity

Provides lifting capacity charts based on reach and load conditions.

PC1250SP-8R Lifting Capacity

Provides lifting capacity charts based on reach and load conditions.

Transportation Guide

Transportation Dimensions and Weights

Details transportation volume, weights of work equipment and components.

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