• 1,175,200 - 1,217,100 lbs Operating Weight
  • 2 x 1,260 @1800 rpm Horsepower
  • 34 - 38 yd³ Bucket Capacity


The 1.1 million pound PC5500-6 Features two 1260 hp diesel motors. If a mine would prefer to use electrical power, the PC5500-6 can be equipped with two electric motors instead of diesel. Like smaller Komatsu mining excavators, backhoe or shovel fronts can be fitted to the PC5500-6.

Komatsu also offers P&H electric rope shovels that provide the lowest cost-per-ton solution for high performance mining operations. Learn more about our electric rope shovels here.


Quality in Manufacturing

Commitment to „Quality and Reliability“
• Quality management ISO 9001
• Environmental management ISO 14001
• Occupational health and safety management system BS OHSAS 18001:2007
• High consistent quality through continuous investment in personnel, design and manufacturing systems and processes


• Large diameter rollers, idlers and sprockets
• Large surface area and extensive precision hardening of all engaging components reduce rack wear
• Hardened track link pin bores 

Powerful Diesel Engine

Two Komatsu SDA12V159E-2 Tier 2 engines
• Rated (each) 940 kW (1260 HP) at 1800 rpm
• Electronic engine management
• Low engine emission levels Tier 2 certificated
•Time saving Engine Oil Management System; Centinel, Engine Reserve Oil Supply and Eliminator Oil Filter System

Reliability and Durability

Long life and low operating cost by design
• Robust structural design developed from field experience and finite element analysis

Access and Egress

• 45° primary access and egress stairways
• 45° access swing stairway
• 2 emergency egresses
- cab and machinery house (two pieces flip down solid anti slip steel ladder)
• Illuminated accesses and egresses


Designed for more tons per hour
• Powerful digging forces
• Ease of bucket filling
• Proven attachment design
• All cylinders mounted in the shadow of the attachment for protection
• Various buckets and wear packages to suit all material densities and properties

Advanced Hydraulics

Extended reliability and precise control
• Comprehensive monitored filtration
• Simple open circuit hydraulic system with high efficiency swing out oil coolers

Large Comfortable Cab

Comfortable for the whole day
• Komatsu low noise cab on multiple viscous mounts for reduced noise and vibration
• Large volume cab with full height front window
• Comprehensive climate control with pressurized filtered air ventilation and air conditioning
• High specification multi-adjustable air suspension seat plus trainer seat
• Well elevated operator position giving good all round view
• Large wash wiper covers windshield area for excellent visibility

Easy Maintenance

Simple, common-sense design provides easy access to all major components
• Generous access to all major service points from machinery house floor level
• Enclosed, walk-in machinery house with partition wall separating engine from pump area
• Automatic central lubrication
• KOMTRAX Plus electronic monitoring system providing real time information about the operating status of the machine
• Ground-level access to hydraulically powered swing down service arm with Wiggins connections
• Acknowledges EMESRT design philosophies 


Diesel Drive

2 x Komatsu SDA12V159E-2
4-cycle, water-cooled, direct injection
Turbocharged and aftercooled
Number of cylinders
Rated power @ 1800 rpm
(SAE 1995/J1349)
2 x 940 kW 2 x 1,260 HP
Governor   All-speed, electronic

The integrated engine oil and filter system combining the oil stabilising systems, Reserve and Centinel, with Eliminator oil filter extends the oil change interval up to 4.000 hours based on oil analysis. The high capacity Mesabi engine radiators are cooled by a hydraulically driven fan for superior cooling efficiency.

Electric System (Diesel Version)

System 24 V
Batteries (series/parallel) 8 x 12 V
Alternator 2 x 140 A
Standard working lights 14 LED lights
Standard service lights throughout the platform


Undercarriage consists of one centre carbody and two track frames, each side attached by high torque bolts

Center frame H-type
Track frame Steel box-section

Crawler Assembly

Track adjustment Automatic hydraulic type
Number of track shoes 46 each side
Number of top rollers 3 each side
Number of bottom rollers 7 each side

Travel and Break System

Travel control 2 foot pedals
Gradeability Up to 50%
Travel speed (maximum) 2.1 km/h 1.4 mph
Service brake Hydraulic brake
Parking brake Wet, multiple-disc

Swing System

Hydraulic motors and drives 2
Swing brake, service Hydraulic brake
Swing brake, parking Wet, multiple-disc
Swing ring teeth External
Swing speed (maximum) 3.1 rpm

Electric Drive

2x Squirrel cage induction motor
Power output
2 x 900 kW
6000 - 7200 V*
Amperage (approximate)
2 x 96 A - 2 x 80 A
Soft start each motor in succession
Frequency standard
60 Hz @ 1800 rpm
Frequency option
50 Hz @ 1500 rpm
*Other voltages available on request

Electric System (Electric Version)

System 24 V
Batteries (series/parallel) 8 x 12 V
Standard working lights 14 LED lights
Standard service lights throughout the platform

Hydraulic System

The power train consists of two main drives. Each of the two gearboxes
drives three identical pumps which draw hydraulic oil from an
unpressurised hydraulic tank. Open circuit hydraulics provide maximum
cooling and filtering efficiency.

Rated flow (total output) 4200 ltr/min 1110 gpm
Relief valve setting 310 bar 4,495 psi
Swing flow rate 700 ltr/min 185 gpm
High pressure in line filters
one per pump located at the valve blocks
200 microns
Full flow return line filters (10 double elements)
at head of hydraulic tank
10 micron
Case drain/by-pass return line filters 3 micron

The four-circuit system features a load-limiting governor with oil delivery
summation to the working circuits and incorporates pressure cut-off
control. Hydropilot prioritises hydraulic flow giving smooth hydraulic
response, simple hydraulic system layout, and a reduced number of
components. The hydraulic system includes large swing-out vertical airto-
oil hydraulic coolers with temperature-regulated hydraulically driven

Automatic Centralized Lubrication

Three hydraulically powered Lincoln single line automatic lubrication systems are provided as standard, complete with time and volume variable controls. The two central lubrication circuits and open gear grease circuit are supplied by identical pump assemblies from refillable containers which have a capacity of 3 x 300 litres (3 x 80 gal). Replenishment of the containers is through the Wiggins connections on the service arm.

Service Capacities

Hydraulic oil tank 3715 ltr 982 U.S. gal
Hydraulic system 6000 ltr 1,585 U.S. gal
Fuel 10355ltr 2,736 U.S. gal
Engine coolant 2x 360 ltr 2x 95 U.S. gal
Engine oil 2x 190 ltr 2x 50 U.S. gal
Centinel engine oil make up tank 2x 500 ltr 2x 132 U.S. gal

Operator Cab

The large and comfortable cab is mounted on 18 viscous damping pads and sound insulated. The cab has automatic climate control and is pressurised. The operator’s seat is air suspended, electrically heated and has a lap seat belt and offers multiple adjustments. The trainer seat is also equipped with a seat belt. Low-effort joystick controls are electrohydraulic with foot controls for front shovel clam, crawler and swing brake. Full instrumentation, KOMTRAX Plus and an AM/FM radio with MP3 ready CD player with AUX in is fitted. The windshield wash wiper has two speeds and intermittent operation. Amenities include a refrigerator and storage cabinets. Powered and heated mirrors are adjusted from inside the cab. External metal sun blinds on the cab side window and interna roller blinds on all windows are standard. The left hand window is an emergency exit. All windows are tinted parsol green. The front window is a 19mm thick impact resistant window. A walkway is mounted in front of cabin.

KOMTRAX Plus Health Monitoring System

KOMTRAX Plus is designed for Komatsu mining equipment to provide real time information about the operating status of the machine via a coloured display. The integrated digital storage provides a full event history and trend data, which can be downloaded by laptop. Optionally available are W-LAN or Orbcomm satellite transmission (check for availability in your territory).



  • 7,6 m 24’11” boom
  • 5,6 m 18’4“ stick
  • Set of cylinders
  • 29 m3 (38 yd3) (SAE 2:1) shovel bucket incl. standard wear package with hammerless GET system



  • 11,0 m 36’1” boom
  • 5,1 m 16’9” stick
  • Set of cylinders
  • 29 m3 (38 yd3) (SAE 1:1) bucket incl. standard wear package with hammerless GET system


  • Heavy-duty shovel type undercarriage
  • Centre carbody
  • 2 heavy box-type track frames
  • 7 bottom rollers and 3 top rollers each side
  • 1350 mm 53” cast steel track shoes
  • Hydraulic track adjustment and parking brake
  • Drive gear box protection


  • Main frame mounted over an externally toothed swing circle carries the drive module
  • 2 x Komatsu SDA12V159E-2 Tier 2 diesel engines
  • Oil and fuel reservoirs
  • Hydraulic components
  • Counterweight


  • 14 LED high performance working lights
  • Service lights throughout the platform


  • Enclosed steel cab mounted on viscous pads
  • FOPS according ISO 3449
  • Air-conditioning unit Sütrak
  • Full suspension operator seat with belt
  • Trainer seat with belt
  • Controls ergonomic
  • KOMTRAX Plus (Monitoring System)
  • Joysticks are electro-hydraulic
  • 1 large parallel windshield wash wiper
  • AM-FM radio with MP3 ready CD player
  • Internal and external sun blinds
  • All windows tinted parsol green
  • Impact resistant front window (19mm)
  • Walkway in front of cab


  • LINCOLN central lubrication for basic machine and attachment
  • LINCOLN central lubrication for bucket and bucket stick assembly
  • LINCOLN automatic pinion lubrication system for swing circle teeth
  • WIGGINS service arm carrying fluid receiving connectors for filling of fuel, engine oil and coolant, hydraulic oil, grease, and the evacuation of coolant, hydraulic and engine oils


  • Acoustic travel alarm
  • Hydraulically actuated ground access ladder
  • 45° primary access and egress stairway
  • 45° access swing stairway (hydraulically operated)
  • Electric air horn
  • Engine turbo and exhaust pipe covers
  • Engine oil management package (Centinel, Reserve & Eliminator systems)
  • Service transfer oil pump
  • Sidewalks and stairs are provided with skid-resistant plates
  • Hand rails and steps on boom
  • Tie off points on boom
  • Engine emergency stop at ground level



  • Alternative buckets on request
  • Boom cylinder sliding guard
  • Arm cylinder sliding guard
  • Bucket cylinder sliding guard (BH)


  • 1.800 mm 71” track shoes
  • Travel motor protection


  • Electro drive various voltages
  • Cable drum without cable
  • Fire suppression system, Ansul (Agent LVS+Powder), diesel drive


  • Electro drive various voltages
  • Cable drum without cable
  • Fire suppression system, Ansul (Agent LVS+Powder), diesel drive


  • Cold weather package down to -40° C (diesel and electro drive)
  • Arctic weather package down to -50° C (diesel and electro drive)
  • Hotstart temperature treatment for ambient temperature down to -50° C  (diesel and electro drive), external power source not included


  • Biodegradable hydraulic oil


  • Camera system acc. ISO5006
  • Service Monitor (incl. all relevant manuals)
  • Additional LED working lights
  • Rotaflare warning lights
  • Additional cab A/C
  • Additional cab heater
  • Service crane
  • Special painting