• 850,000 - 875,000 lbs Operating Weight
  • 1,875 @1800 rpm Horsepower
  • 29 yd³ Bucket Capacity


Productivity is the name of the game in the mining business, and the PC4000-6 is the machine miners turn to when they need to load 150 to 240 ton trucks. The PC4000-6 with 1875 hp can be configured as a shovel or backhoe, depending on the job.

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 management ISO 9001
• Environmental Management ISO 14001
• High consistent quality through continuous investment in personnel, design and manufacturing systems and processes

Reliability and Durability

• Robust structural design developed from field experience and finite element analysis Undercarriage
• Big diameter rollers, idlers and sprockets
• Large surface area and extensive precision hardening reduce track wear
• Hardened track link pin bores


• Powerful digging forces
• Ease of bucket filling
• Proven bucket design
• All cylinders mounted in the shadow of the attachment for protection
• Buckets and wear packages to suit all material densities and properties

Advanced Hydraulics

• Precise control
• Comprehensive monitored filtration
• Simple open circuit hydraulic system with high efficiency swing out oil coolers

Large Comfortable Cab

• Gives full shift comfort
• Komatsu low noise cab on multiple viscous mounts for reduced noise and vibration
• Large volume cab with large scale front window
• Comprehensive climate control with pressurized filtered air ventilation and air conditioning
• High specification multi-adjustable air suspension seat
• Well elevated operator position giving good all round view Large Comfortable Cab 

Powerful Diesel Engine

• Komatsu SDA16V160E-2 engine Tier 2 certified, Rated 1400 kW / 1875 HP at 1800 rpm
• Electronic engine management
• Low engine emission levels meet EPA regulations
• Time saving Engine Oil Management System; Centinel, Engine Reserve Oil Supply and Eliminator Oil Filter system

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


KOMTRAX® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more.


Diesel Drive

The integrated engine oil and filter system combining the oil stabilizing systems, Reserve and Centinel, with Eliminator oil filter extends the oil change interval up to 4000 hours based on oil analysis. The high capacity Mesabi engine radiators are cooled by a hydraulically driven fan for superior cooling efficiency.


Model Komatsu SDA16V160E-2 Tier 2
Type Water-cooled, 4-cycle, direct injection
Aspiration Turbocharged and aftercooled
Number of cylinders 16
Rated power (SAE 1995/J1349) @ 1800 rpm 1,875 HP 1400 kW
Governor All-speed, electronic

Hydraulic System

The power train consists of one main drive. One gearbox drives four identical pumps which draw hydraulic oil from an unpressurized hydraulic tank. Open circuit hydraulics provide maximum cooling and filtering efficiency.

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


Rated flow (total output) 1,096 U.S. gpm 4140 ltr/min
Relief valve setting 4,495 psi 310 bar
Swing flow rate 420 U.S. gpm 1590 ltr/min
High pressure in line filters
one per pump located at the valve blocks
200 microns
Full flow return line filters (5 double)
at head of hydraulic tank
10 microns
Case drain return line filters (one double element) 3 microns

Swing System

Hydraulic motors and drives2
Swing brake, serviceHydraulic
Swing brake, parkingWet multiple-disc
Swing ring teethExternal
Swing speed (maximum)4.0 rpm

Travel and Brake System

Travel control2 foot pedals
GradeabilityUp to 50%
Travel speed (maximum)1.3 mph2.1 km/h
Service brakeHydraulic brake
Parking brakeWet multiple-disc brake


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

Center frameH-type
Track frameSteel box-section

Crawler Assembly

Track adjustmentAutomatic hydraulic type
Number of track shoes (each side)49
Number of top rollers (each side)3
Number of bottom rollers (each side)7

Electrical System (Diesel Version)

System24 V
Batteries (series/parallel)2 x 3 x 12 V
Alternator260 A
Standard working lights14 Xenon lights
Standard service lightsthroughout platform

Electrical System (Electric Version)

System24 V
Batteries (series/parallel)2 x 2 x 12 V
Standard working lights14 Xenon lights
Standard service lightsthroughout platform

Electric Drive

TypeSquirrel-cage induction motor
Power output1350 kW
Voltage6,000 – 7,200 V*
Amperage (approximate)145 A – 120 A
Start-upSoft start
Frequency standard60 Hz @ 1800 rpm
Frequency option50 Hz @ 1500 rpm
*Other voltages available on request.

Automatic Centralized Lubrication

Two hydraulically powered Lincoln single line automatic lubrication systems are provided as standard, complete with time and volume variable controls. The central lube grease system is supplied from a refillable 200 liter 53 gal barrel. A second, identical system supplies open gear lubricant to the swing ring teeth through a lube pinion. Replenishment of the containers is through the Wiggins connections on the service arm.

Service Refill Capacities

Hydraulic oil tank1,030 U.S. gal3900 ltr
Hydraulic system1,559 U.S. gal5900 ltr
Fuel1,691 U.S. gal6400 ltr
Engine coolant125 U.S. gal475 ltr
Engine oil77 U.S. gal290 ltr
Centinel engine oil make up tank122 U.S. gal460 ltr

Operator Cab

The large and comfortable cab is mounted on 18 viscous damping pads and sound insulated. The cab has an automatic climate control and is pressurized. 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 lap seat belt. Low-effort joystick controls are electric over hydraulic 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 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 internal roller blinds on all windows are standard. The left hand window is an emergency exit. All windows are tinted parsol green.


Cab engineering standards are:
• ISO 3449 Falling Objects Protection Structure (FOPS Level II)
• ISO 6396 Noise in operator’s cab is 75 dB(A)
• ISO 2631-1 Whole body vibration and shock below 0.5 m/s²
• ISO 5349-1 Hand-lever vibration lower 2.5 m/s²
• ISO 10263-4 Heating and air conditioning second heater and air conditioner as option

Vehicle Monitoring System

KOMTRAX Plus is designed for Komatsu mining equipment to provide real time information about the operating status of the machine via a colored display. The integrated digital storage provides a full event history and trend data, which can be downloaded by laptop, optional are W-LAN or satellite modem.

Operating Weights (approximate)

PC4000 Backhoe: Operating weight including 9750 mm / 32'0" boom, 4500 mm / 14'9" stick, 22 m³ / 29.0 yd³ backhoe bucket, operator, lubricant, coolant, 1/3 fuel and standard equipment.

Shoe Width: Operating Weight: Ground Pressure:
47'' / 1200 mm backhoe 869,200 lb / 394 t 31.3 psi / 21.6 N/cm²
59'' / 1500 mm backhoe 879,800 lb / 399 t 25.4 psi / 17.5 N/cm²


Hydraulic Mining Shovel with Diesel Drive Tier 2


  • 7.15 m / 23'6" boom
  • 4.9 m / 16'1" stick
  • Set of cylinders
  • 22 m3 / 29 yd3 (SAE 2:1) shovel bucket WP3, with hammerless GET system



  • 9.75 m / 32'0" boom
  • 4.5 m / 14'9" stick
  • Set of cylinders
  • 22 m3 / 29 yd3 (SAE 1:1) bucket WP2, with hammerless GET system


  • Heavy-duty shovel type undercarriage
  • 2 heavy box-type track frames
  • 7 bottom rollers and 3 top rollers each side
  • 1200 mm / 47" cast steel track shoes
  • Hydraulic track adjustment and parking brake 


  • Main frame mounted over an externally toothed swing circle carries the drive module
  • Komatsu SDA16V160E-2 diesel engine
  • Hydraulic components
  • Counterweight


  • 14 Xenon high performance working lights
  • Service lights throughout platform


  • Enclosed steel cab mounted on viscous pads
  • FOPS according ISO 3449 (Level II)
  • Air-conditioning
  • Full suspension operator seat
  • Trainer seat
  • Controls in operator comfort zone
  • KOMTRAX Plus (Monitoring System)
  • Joysticks and controls are electric over 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


  • LINCOLN central lubrication for basic machine, attachment and bucket
  • 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
  • Electric horn
  • Engine turbo and exhaust pipes cover
  • Engine oil management package (Centinel, Reserve & Eliminator systems)
  • Service transfer oil pump
  • Rails and steps on boom
  • Tie off points on boom


  • 1500 mm / 59" track shoes
  • Additional lighting
  • Fire suppression system
  • Electric drive
  • Cable reel (Electric version)
  • Low temperature package (-40 °C; -50 °C) incl. KIM hot start