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Komatsu Excavators PC4000-6
PC4000-6 Mining Shovel
Productivity is the name of the game in the mining business, and the PC4000-6 Mining Shovel excavators 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.
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.
Komatsu SDA16V160E-2 Tier 2
Water-cooled, 4-cycle, direct injection
Turbocharged and aftercooled
Number of cylinders
Rated power (SAE 1995/J1349) @ 1800 rpm
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
Relief valve setting
Swing flow rate
420 U.S. gpm
High pressure in line filters one per pump located at the valve blocks
Full flow return line filters (5 double) at head of hydraulic tank
Case drain return line filters (one double element)
Travel and Brake System
2 foot pedals
Up to 50%
Travel speed (maximum)
Wet multiple-disc brake
Hydraulic motors and drives
Swing brake, service
Swing brake, parking
Wet, multiple disc
Swing ring teeth
Swing speed (maximum)
The undercarriage consists of one center carbody and two track frames, each side attached by 38 high torque bolts.
Automatic hydraulic type
Number of track shoes (each side)
Number of top rollers (each side)
Number of bottom rollers (each side)
Electrical System (Diesel Version)
2 x 2 x 12 V
Standard working lights
14 Xenon lights
Standard service lights
Squirrel-cage induction motor
6,000 - 7,200 V*
145 A - 120 A
60 Hz @ 1800 rpm
50 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 tank
1,030 U.S. gal
1,559 U.S. gal
1,691 U.S. gal
125 U.S. gal
77 U.S. gal
Centinel engine oil make up tank
122 U.S. gal
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.