• 38,720 - 43,115 lbs Operating Weight
  • 121 @ 2100 rpm Horsepower
  • 0.48 - 1.24 yd³ Bucket Capacity

PC170LC-11 Mid-Size Excavator

The PC170LC-11 is a highly versatile, utility-sized excavator for all types of jobs requiring a smaller machine with big power. New to the PC170LC-11 is an enhanced Power Mode, featuring up to a six percent improvement in productivity, compared to the PC170LC-10. In addition, six selectable working modes and selectable, one and two-way attachment flow, extends versatility. The PC170LC-11 is EPA Tier 4 Final emissions compliant, without the need for a Diesel Particulate Filter (DPF). A viscous fan clutch helps maintain fuel savings and reduces engine load when maximum cooling is not required. An upgraded seven-inch monitor includes KOMTRAX® level five telematics, which features operator ID, DEF management, and auto-idle shutdown. Two counterweight options are available to match customer needs. The lighter 6,063 lb option makes transport on a tag trailer easier, while the heavier 7,143 lb option offers greater stability for equipment such as a bucket/coupler/thumb combination.

PC170LC-11 Walkaround  >


Tier 4 Final Engine

The Komatsu SAA4D107E-3 engine is EPA Tier 4 Final emissions certified and provides exceptional performance and efficiency. Based on Komatsu proprietary technologies developed over many years, this new diesel engine reduces nitrogen oxides (NOx) by more than 80%, when compared to Tier 4 interim levels. An added temperature controlled viscous fan clutch helps improve fuel efficiency and reduce sound levels. Through the in-house development and production of engines, electronics, and hydraulic components, Komatsu has achieved great advancements in technology providing high levels of performance and efficiency in virtually all applications.

Komatsu Diesel Oxidation Catalyst

The Komatsu Diesel Oxidation Catalyst (KDOC) has an integrated design that does not interfere with daily operation. This smart and simplified system removes soot using passive regeneration, over 98% of the time, without the need for a Diesel Particulate Filter. The KDOC is a simple design and does not have a scheduled service interval like a DPF and is designed for long life with no scheduled maintenance required. For owners, this means lower owning and operating costs due to less complexity and seamless operation.

Efficient Hydraulic System

The PC170LC-11 uses a Closed Center Load Sensing (CLSS) hydraulic system that improves fuel efficiency and provides quick response to the operator's demands. The PC170LC-11 also introduces new technology to enhance the engine and hydraulic pump control. This total control system matches hydraulic demand with engine power at the most efficient point under any load condition. There have also been improvements in the main valve and hydraulic circuit to help reduce hydraulic loss, resulting in higher efficiency and performance.

Working Mode Selection

The PC170LC-11 excavator is equipped with six working modes (P, E, L, B, ATT/P and ATT/E). Each mode is designed to match engine speed, pump flow, and system pressure to the application. The PC170LC-11 features a new mode (ATT/E) which allows operators to run attachments while in economy mode.

Working Environment

The PC170LC-11 features a ROPS cab which conforms to ISO 12117-2, as well as Level 1 Operator Protective Guard (OPG) top guard standards. The cab also contains a ground-level, secondary engine shut down switch, automatic climate control, and features a standard air suspension seat. The viscous cab mounts and viscous fan clutch help reduce vibration and allow 68 dB(A) operator sound level for a quiet, comfortable environment.

Upgraded Monitor

The updated, seven-inch LCD color monitor features two rearview camera display modes, along with a large, easy-to-read machine information display. The monitor also features an operator ID system, which captures machine operating system information by unique ID code. This system can be used to not only monitor operators, but also applications and jobs, etc. The monitor also displays key maintenance intervals and DEF level.

Ease of Maintenance

Key maintenance items are grouped for easy service. The radiator and oil cooler are side-by-side and feature debris screens to reduce material build up. The fuel filters, engine oil and air filter are all accessible from ground level. DEF fill is easily accessible from platform level and the DEF pump can be accessed without using hand tools. These features, combined with Komatsu Care, will provide benefits such as increased uptime and efficiency, cost of ownership savings, and the assurance of proper maintenance with OEM Parts and Service.



Model Komatsu SAA4D107E-3*
Type Water-cooled, 4-cycle, direct injection
Aspiration Variable Geometry Turbocharger (VGT), aftercooled, cooled EGR
Number of cylinders 4
Bore 107 mm 4.21"
Stroke 124 mm 4.88"
Piston displacement 4.46 ltr 272 in³
ISO 9249 / SAE J1349 90 kW 121 HP
Fan at maximum speed 85 kW 114 HP
Rated rpm 2100
Fan drive method for radiator cooling Mechanical with viscous fan clutch
Governor All-speed control, electronic

*EPA Tier 4 Final emissions certified


Type HydrauMind (Hydraulic Mechanical Intelligence)
system, closed-center system with load sensing valves and
pressure compensated valves
Main pump:
Type Variable capacity piston type
Pumps for Boom, arm, bucket, swing, and travel circuits
Maximum flow 298 ltr/min 78.7 gal/min
Hydraulic motors:
Travel 2 x piston motor with parking brake
Swing 1 x axial piston motor with swing holding brake
Relief valve setting:
Implement circuits 37.3 MPa 380 kg/cm² 5,450 psi
Travel Circuit
37.3 MPa 380 kg/cm²
5,400 psi
Swing circuit 28.9 MPa 295 kg/cm² 4,195 psi
Pilot circuit 3.2 MPa 33 kg/cm² 470 psi
Hydraulic cylinders:
Number of cylinders bore x stroke x rod diameter bore x stroke x rod diameter
Boom / 2 110 mm x 1175 mm x 75 mm 4.3" x 46.3" x 3.0
Arm / 1 120 mm x 1342 mm x 85 mm 4.7" x 52.8" x 3.3"
Bucket / 1 105 mm x 1027 mm x 70 mm 4.1" x 40.4" x 2.8"

Drives and Brakes

Steering control Two levers with pedals
Drive method Fully hydrostatic
Maximum drawbar pull 156 kN 15950 kgf 35,164 lbf
Gradeability 70% 35°
Maximum travel speed:
High 5.5 km/h 3.4 mph
Low 3.0 km/h
1.9 mph
Service brake Hydraulic lock
Parking brake
Mechanical disc

Swing System

Drive method Hydraulic motor
Swing reduction Planetary gear
Swing circle lubrication Grease-bathed
Swing lock Mechanical disc brake
Swing speed 12.0 rpm
Swing torque 4331 kg•m 31,314 ft lbs


Center frame X-frame leg
Track frame Box-section
Track type
Track adjuster Hydraulic
Number of shoes (each side) 44
Number of carrier rollers (each side) 2
Number of track rollers (each side) 7

Coolant and Lubricant Capacity Refilling

Fuel tank 300 ltr 79.25 U.S. gal
Radiator 27.3 ltr 7.21 U.S. gal
Engine 18 ltr
4.8 U.S. gal
Final drive, each side 5.4 ltr 1.43 U.S. gal
Swing drive 4.5 ltr 1.2 U.S. gal
Hydraulic tank 121 ltr 32.0 U.S. gal
DEF tank 29.6 ltr 7.81 U.S. gal

Operating Weight

Operating weight includes 5150 mm 16'11" one-piece boom, 2610 mm 8'7" arm, SAE heaped 0.95 m3 1.24 yd3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.

Standard Counterweight Heavy Counterweight
Triple-Grouser Operating Weight
Ground Pressure
ISO 16754
Operating Weight
Ground Pressure
ISO 16754
600 mm
18508 kg
40,717 lb
43.86 kPa
0.45 kg/cm²
6.36 psi
19098 kg
42,015 lb
45.26 kPa
0.46 kg/cm²
6.56 psi
700 mm
18708 kg
41,157 lb
38.0 kPa
0.39 kg/cm²
5.51 psi
19298 kg
42,455 lb
39.2 kPa
0.4 kg/cm²
5.69 psi
800 mm
18908 kg
41,597 lb
33.61 kPa
0.34 kg/cm²
4.87 psi
19498 kg
42,895 lb
34.66 kPa
0.35 kg/cm²
5.03 psi


  • Alternator, 85 Ampere, 24V
  • AM/FM radio
  • Automatic engine warm-up system
  • Automatic climate control/air conditioner/heater/defroster
  • Auxiliary input (3.5mm jack)
  • Batteries, large capacity
  • Battery disconnect switch
  • Boom holding valve
  • Converter, (2) x 12V
  • Dry type air cleaner, double element
  • Electric horn
  • EMMS monitoring system
  • Engine, Komatsu SAA4D107E-3
  • Engine overheat prevention system
  • Extended work equipment grease interval
  • Fan guard structure
  • Fuel system pre-cleaner 10 micron
  • High back air suspension seat, with heat
  • Hydraulic track adjusters
  • KOMTRAX® Level 5
  • Large LCD color monitor, high resolution
  • Lock lever
  • Mirrors, (LH and RH)
  • Operator identification function
  • Operator Protective Top Guard (OPG), Level 1 (ISO 10262)
  • Pattern change valve (ISO to BH control)
  • PPC hydraulic control system
  • Pump/engine room partition
  • Radiator and oil cooler debris screen
  • Rear reflectors
  • Rearview monitoring system (1 camera)
  • Revolving frame undercovers
  • ROPS cab (ISO 12117-2)
  • Seat belt, retractable, 76mm 3"
  • Seat belt indicator
  • Secondary engine shutoff switch
  • Service valve
  • Shoes, triple grouser, 600 mm 24"
  • Skylight
  • Slip resistant foot plates
  • Starter motor, 4.5kW
  • Suction fan with viscous clutch
  • Track frame swivel guard
  • Travel alarm
  • Two speed travel with auto shift
  • Working lights, 1 cab LH side/1 boom RH
  • Working mode selection system



  • 2900 mm 9'6" arm assembly
  • 2610 mm 8'7" arm assembly
  • 2900 mm 9'6" arm w/ one actuator piping
  • 2610 mm 8'7" arm w/ one actuator piping


  • 5150 mm 16'11" boom assembly
  • 5150 mm 16'11" boom w/ one actuator piping


  • 2750 kg 6,063 lb
  • 3240 kg 7,143 lb

Cab guards

  • Full front guard, OPG Level 1
  • Full front guard, OPG Level 2
  • Bolt-on top guard, OPG Level 2


  • Hydraulic control unit, 1 actuator
  • Shoes, triple grouser, 700 mm 28"
  • Shoes, triple grouser, 800 mm 32"
  • Sun visor
  • Rain visor