• 54,230 - 55,660 lbs Operating Weight
  • 165 @ 2000 rpm Horsepower
  • 0.66 - 1.57 yd³ Bucket Capacity

PC238USLC-11

The PC238USLC-11 is Komatsu’s latest tight tail swing excavator, utilizing a Komatsu SAA6D107E-3 engine to meet Tier 4 Final emissions regulations. A new vicious fan clutch reduces engine parasitic loads, resulting in up to 4% better productivity, when compared to the PC228USLC-10. The PC238USLC-11 maintains the tight tail swing radius of its predecessor, making it well suited for utility and roadway applications working in confined spaces. The PC238USLC-11’s contoured cab profile and sliding door allows the cab to swing within the same radius as the counterweight. Additional counterweight remains standard, giving the PC238USLC-11 equivalent or better lift capacity than conventional models in the same size class.

Features

Powerful Komatsu SAA6D107E-3 engine

A powerful Komatsu SAA6D107E-3 engine provides a net output of 123 kW 165 HP. This engine is EPA Tier 4 Final emissions certified.

Enhanced Productivity

The PC238USLC-11's P mode provides improved performance in demanding applications.

Productivity                                                             Compared to the PC228USLC-10 in P mode

Up to 4% increase


P mode (90° swing truck loading)

Efficient Hydraulic System

The PC238USLC-11 uses a Closed-Center Load Sensing System (CLSS) that improves fuel efficiency and provides quick response to the operator's demands. The control system matches engine and hydraulic demand at the most efficient point under any load condition. There have also been improvements in the main valve and hydraulic circuit to reduce hydraulic loss, resulting in higher efficiency and lower fuel consumption.

Arm Quick Return Valve

When the arm is extended, the quick return valve directs additional oil through a second line directly back to tank which reduces back pressure. Reduces fuel consumption and improves efficiency.

Viscous Fan Clutch

A temperature controlled viscous fan clutch improves engine efficiency and reduces engine power requirements when operating in cooler temperatures.

Stable Platform

The PC238USLC-11's compact 6.7 mt 14,815 lb counterweight provides exceptional lifting capacity and minimizes rear swing radius for operation in confined areas.

Short Tail Swing Radius

1810 mm 5'11" short tail swing radius of the PC238USLC-11 allows the machine to work in more confined areas than a conventional machine.

Greater Working Ranges

Raising the boom on the PC238USLC-11 to a greater angle enhances overall working performance. Job sites that require a taller upper reach, such as demolition and slope cutting, also benefit from the increased digging and dumping ranges of the PC238USLC-11.
Working range
Max. digging height: 10700 mm 35' 1"
Max. digging depth: 6620 mm 21' 9"
Max. digging reach: 9875 mm 32' 5"

Optional Komvision

An optional three camera system provides a bird's eye view (including cab visibility) of the machine and surrounding area. This system improves operation and situational awareness on the jobsite
KomVision benefits operators working in urban environments, confined spaces, and high traffic jobsites from increased visibility and situational awareness.
Distance markers are displayed in the monitor to show machine tail swing radius.

Specification

Engine

Model Komatsu SAA6D107E-3*
Type Water-cooled, 4-cycle, direct injection
Aspiration Komatsu Variable Geometry Turbo air-to-air aftercooled
Number of cylinders 6
Bore 107 mm 4.21"
Stroke 124 mm 4.88"
Piston displacement 6.69 ltr 408 in³
Horsepower:
SAE J1995 / Gross 123 kW 165 HP
ISO 9249 / SAE J1349 / Net 123 kW
165 HP
Fan at maximum speed / Net
116 kW 156 HP
Rated rpm 2000
Governor All-speed control, electronic
Lubrication system:
Method Gear pump, force-lubrication
Filter
Full-flow
Air cleaner Air cleaner, double element and auto dust evacuator

*EPA Tier 4 Final emissions certified

Hydraulics

Type: Closed-center system with load sensing valve and pressure compensated valve

Main pump:
Type Variable capacity piston type
Pumps for Boom, arm, bucket, swing, and travel circuits
Maximum flow 475 ltr/min 125.5 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 kgf/cm² 5,400 psi
Travel circuits 37.3 MPa 380 kgf/cm²
5,400 psi
Swing circuits 29.4 MPa 299 kgf/cm² 4,264 psi
Pilot circuit 3.2 MPa 33 kgf/cm² 470 psi
Hydraulic cylinders:
(Number of cylinders – bore x stroke x rod diameter)
Boom / 2 130 mm x 1385 mm x 90 mm 5.11" x 54.5" x 3.5"
Arm / 1 135 mm x 1490 mm x 95 mm 5.3" x 58.7" x 3.7"
Bucket / 1 115 mm x 1120 mm x 80 mm 4.5" x 44.1" x 3.2"

Coolant and Lubricant

Fuel tank 290 ltr 76.6 U.S. gal
Radiator 28.3 ltr 7.6 U.S. gal
Engine 23.1 ltr 6.1 U.S. gal
Final drive, each side 5.0 ltr 1.4 U.S. gal
Swing drive 6.5 ltr 1.7 U.S. gal
Hydraulic tank 126 ltr 33.3 u.s. gal
DEF tank
13 ltr
3.4 U.S. gal

Drive and Brakes

Steering control Two-lever with pedals
Drive method Fully hydrostatic
Maximum drawbar pull 202 kN 20600 kgf 45,410 lb
Maximum travel speed:
High 5.5 km/h 3.4 mph
Mid 4.1 km/h
2.5 mph
Low 3.0 km/h 1.9 mph
Gradeability 70%, 35°
Service brake Hydraulic lock
Parking brake
Mechanical disc

Swing Systems

Driven by Hydraulic motor
Swing reduction Planetary gear
Swing circle lubrication Grease-bathed
Swing lock Mechanical disc brake
Swing speed 11.0 rpm
Swing torque 6656 kg.m 48,124 ft lbs

Undercarriage

Center frame X-frame leg
Track frame Box-section
Track type Sealed
Track adjuster Hydraulic
Number of shoes (each side): 49
Number of carrier rollers (each side): 2
Number of track rollers (each side): 9

Sound Performance

Exterior – ISO 6395 100 dB(A)
Operator – ISO 6396 71 dB(A)

Operating Weight Approximate

Operating weight including 5700 mm 18'8" one-piece boom, 2925 mm 9'7" arm, SAE heaped 0.85 m3 1.11 yd3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.

Shoes Operating Weight Ground Pressure
Road Liner
600 mm 24"
24600 kg
54,230 lb
51.1 kPa 0.52 kg/cm²
7.41 psi
700 mm
28"
24870 kg
54,825 lb
44.29 kPa 0.45 kg/cm²
6.42 psi
800 mm
31.5"
25150 kg
55,440 lb
39.19 kPa 0.39 kg/cm²
5.68 psi

standard

ENGINE

  • Automatic engine warm-up system
  • Dry type air cleaner, double element
  • Engine, Komatsu SAA6D107E-3
  • Engine overheat prevention system
  • Fuel pre-filter (With water separator)

ELECTRICAL SYSTEM

  • Alternator, 21 V/85 A
  • Auto-decelerator
  • Batteries, large capacity
  • Converter, 12 V
  • Electric horn
  • Starting motor, 24 V/5.5 kW
  • Working light, 3 (Boom and cab)

HYDRAULIC SYSTEM

  • Arm holding valve
  • Boom holding valve
  • Pattern change valve (ISO to BH)
  • Pressure Proportional Control (PPC) hydraulic control system
  • Power maximizing system
  • Service valve (1 additional)
  • Three Speed travel with auto shift
  • Working mode selection system

GUARDS AND COVERS

  • Fan guard structure
  • Pump/engine partition cover
  • Revolving frame undercovers
  • Track frame undercover
  • Track roller guard, center section

UNDERCARRIAGE

  • Hydraulic track adjusters (Each side)
  • Track rollers, 9 each side
  • Track shoe, 700 mm 28" triple grouser

OPERATOR ENVIRONMENT

  • A/C with defroster
  • AM/FM radio
  • Auxiliary input (3.5 mm jack)
  • High back suspension seat wth heat
  • Large high resolution LCD monitor
  • Lock lever
  • Mirrors (RH, LH, sidewise)
  • Operator protective top guard, OPG level 1 (ISO 10262)
  • Rear view monitor system
  • ROPS cab (ISO 12117-2)
  • Seat belt, retractable
  • Skylight

OTHER EQUIPMENT

  • Battery disconnect switch
  • Cooling fan, suction type with viscous clutch
  • Counterweight, 6720 kg 14,815 lb
  • Engine shutdown secondary switch
  • Equipment Management Monitoring System
  • KOMTRAX
  • Radiator and oil cooler dust proof net
  • Rear reflector
  • Slip-resistant plates
  • Travel alarm

optional

HYDRAULIC SYSTEM

  • Hydraulic control unit
    —One additional actuator
  • Proportional control handles

GUARDS AND COVERS

  • Cab guards
    —Full front guard, OPG level 1 (ISO 10262)
    —Full front guard, OPG level 2 (ISO 10262)
    —Bolt-on top guard, OPG level 2 (ISO 10262)
    —Lower front window guard

UNDERCARRIAGE

  • Shoes
    —800 mm 31.5" triple grouser
    —600 mm 24" road liner

OPERATOR ENVIRONMENT

  • Cab accessories
    —Rain visor
    —Sun visor

OTHER EQUIPMENT

  • KomVision
  • Right side view monitor system
  • Working light, two on cab

WORK EQUIPMENT

  • Arms
    —2925 mm 9'7" arm assembly
    —2925 mm 9'7" arm assembly with piping
  • Booms
    —5700 mm 18'8" HD boom assembly
    —5700 mm 18'8" HD boom assembly with piping