Hydraulic Excavator

PC45MR-5

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  • 10,737 - 11,001 lbs Operating Weight
  • 38 @ 2400 rpm Horsepower
  • 0.07 - 0.21 yd³ Bucket Capacity
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PC45MR-5

The PC45MR-5 is the perfect compact excavator for general contractors looking for a machine that fits on a 80” deck trailer, is easy to transport and delivers powerful performance. Three different track options and standard auxiliary hydraulics for multiple attachment options make this tight-tail-swing excavator the right choice.

PC45MR-5 Walkaround  >

FEATURES

New Engine Technologies

The PC45MR-5 is equipped with a clean engine that complies with the EPA Tier 4 Final emission regulations. The engine uses proven environment friendly technologies such as an exhaust gas aftertreatment system, an electronically-controlled cooled Exhaust Gas Recirculation (EGR) system, and an optimum fuel injection system using a common rail. These technologies, combined with Komatsu’s own electronic control system, minimize environmental impact and improve fuel economy.


Electronic control system

The engine and hydraulic system are optimally controlled according to the operating conditions. The hydraulic loss reductions also help reduce both fuel consumption and environmental impact.

Fuel consumption

Reduced Up To 5% Fuel consumption

Comparison with Komatsu’s prior models

The average working pattern is analyzed by KOMTRAX. The above data may differ from actual fuel consumption depending on the type of work. The fuel consumption data is based on in-house comparison test results.

Multi-Function Monitor

Various alerts and machine information are displayed in a simple format. Useful information such as operation records, machine setting and maintenance data are also provided. The operator can easily switch screens.

Efficient and Effective Maintenance

The side opening engine hood and large side cover provide easy access for daily inspections. The cab or platform can be tilted up together with the operator’s seat to gain access for major maintenance or repair work.

Minimum Swing Radius

The extra-small swing radius with minimum rear protrusion from the tracks (60mm for PC45MR-5) allows the operator to concentrate on work in confined areas.

Enhanced Working Environment

  • Mid back, suspension operator seat
  • Integrated ROPS cab design (ISO 3741:2008)
  • Cab meets ISO Level 1 Operator Protective Guard (OPG) top guard (ISO 10262)
  • Aux jack and 12V outlet
  • Radio-ready cab

Specifications

Engine

Model
Komatsu 4D88E-7*
Type
Water-cooled, 4-cycle, direct injection, cooled EGR
Aspiration
   Naturally aspirated
Number of cylinders
   4
Bore
 88 mm  3.46"
Stroke
 90 mm 3.54"
Piston displacement 2.19 ltr 134 in³
Horsepower:

SAE J1995 - Gross 29.1 kW 39 HP
ISO 9249 / SAE J1349 - Net 28.3 kW 38 HP
Rated rpm
2400
Fan drive method for radiator cooling
Mechanical
Governor
All-speed control, electronic
*EPA Tier 4 Final emissions certified

Hydraulic System

Type
HydrauMind (Hydraulic Mechanical
Intelligence New Design) system
Number of selectable working modes
   2
Main pumps:

Pumps for
   Boom, arm, bucket, and travel circuits
Type
Variable displacement, axial piston
Maximum flow 153.3 ltr/min
40.1 gal/min
Pumps for
   Swing and blade
Type
   Fixed displacement gear
Maximum flow
  63 ltr/min 16.6 gal/min
Hydraulic motors:

Travel
2 x axial piston motor with parking brake
Swing
1 x axial piston motor with swing holding brake
Relief valve setting:

Implement circuits
 26.5 MPa 270 kgf/cm² 3,844 psi
Travel circuit
 26.5 MPa 270 kgf/cm²
 3,844 psi
Swing circuit
 21.6 MPa 220 kgf/cm²
 3,133 psi
Pilot circuit
 3.14 MPa 32 kgf/cm²
 455 psi
Blade circuit (Raise, Lower)
 21.6 MPa 220 kgf/cm²
 3,133 psi
Hydraulic cylinders:
(Number of cylinders – bore x stroke x rod diameter)
    
Boom / 1
 90 mm x 691 mm x 50 mm 3.54" x 27.2" x 1.97"
Arm/ 1
 80 mm x 649 mm x 50 mm 3.14" x 25.6" x 1.97"
Bucket / 1
 70 mm x 580 mm x 45 mm 2.76" x 22.8" x 1.77"
Boom swing / 1
 90 mm x 630 mm x 50 mm 3.54" x 24.8" x 1.97"
Blade / 1
 110 mm x 140 mm x 50 mm 4.33" x 5.5" x 1.97"

Drives and Brakes

Steering control
   Two levers with pedals
Drive method   Hydrostatic
Maximum drawbar pull 42 kN 4280 kgf  9,436 lbf
Gradeability   30°
Maximum travel speed:
(Auto-shift)
  
High
 4.6 km/h 2.9 mph
Low
 2.6 km/h
1.6 mph
Service brake
Hydraulic lock
Parking brake
Mechanical disc

Swing System

Drive method Hydrostatic
Swing reduction
 Planetary gear
Swing circle lubrication Grease-bathed
Swing brake Hydraulic lock
Swing lock Mechanical disc brake
Swing speed
 9 rpm

Undercarriage

Center frame
 X-frame
Track frame
 Box-section
Track type
 Sealed
Track adjuster
 Hydraulic
Number of shoes (each side) 39
Number of carrier rollers (each side) 1
Number of track rollers (each side) 4

Coolant & Lubricant Capacity (refilling)

Fuel tank 65 ltr
17.2 U.S. gal
Coolant 8.9 ltr
2.4 U.S. gal
Engine 8.1 (7.5) ltr
2.2 (2.0) U.S. gal
0.7 ltr
0.2 U.S. gal
Hydraulic tank 55 (20) ltr
14.5 (5.3) U.S. gal

Standard

ENGINE

  • Air cleaner, double element with auto dust evacuator
  • Cooling fan, suction type
  • Side by side cooling package

ELECTRICAL SYSTEM

  • Alternator, 12 V/55 A
  • Auto deceleration
  • Battery, 1 x 12 V/72 Ah
  • Starting motor 12 V/2.3 kW
  • Working light on boom
  • Working light on cab or canopy

HYDRAULIC SYSTEM

  • Auxiliary hydraulics with selector valve

GUARDS AND COVERS

  • Fan guard structure
  • Thermal guard

UNDERCARRIAGE

  • Shoe, 400 mm 16" rubber shoe

OPERATOR ENVIRONMENT

  • 12 V x 1 power supply
  • Automatic two-speed travel control
  • Lock lever auto lock function
  • Monitor panel, 3.5" color display
  • Operator identification function
  • Rear view mirrors (RH, LH, rear)
  • Seat belt, 76 mm 3" retractable
  • Suspension seat (mid height) 
  • Travel alarm 
  • Travel lamp
  • Two-post ROPS canopy

WORK EQUIPMENT

  • Arm — 1695 mm 5'7" arm assembly with piping
  • Backfill blade
  • Boom — 2640 mm 8'8" boom assembly with piping

OTHER EQUIPMENT

  • Auto idle shutdown function
  • KOMTRAX® Level 5 - cellular based
  • Swing holding brake                             

Optional

UNDERCARRIAGE

  • Road Liner track (400 mm 16")
  • Steel track (400 mm 16")

OPERATOR ENVIRONMENT

  • Cab with hinged door, air conditioner, radio ready, auxiliary input (3.5 mm jack) ready
  • Proportional Control Joysticks

WORK EQUIPMENT

  • Angle dozer blade
  • Wide variety of attachments