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Global-CE > Small Excavators > KOMATSU Small Excavators > Komatsu PC45MR-5 SMALL EXCAVATORS
Komatsu PC45MR-5 SMALL EXCAVATORS

Komatsu PC45MR-5 SMALL EXCAVATORS

BucketCapacityMax:
0.21
BucketCapacityMin:
0.07
Horsepower:
38 @ 2400 rpm
OperatingWeightMax:
11001
OperatingWeightMin:
10737
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Product Feature

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.

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.

Product Parameter

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


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"

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

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

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

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

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