Komatsu PC45MR-3 Mini Excavator


Dimensions

Overall Length 205.5 in (5220 mm)
Overall Width 77.2 in (1960 mm)
Overall Height 100.4 in (2550 mm)
Tail Swing Radius 41.7 in (1060 mm)
Crawler Length 99.2 in (2520 mm)
Track Gauge 61.4 in (1560 mm)
Track Shoe Width 15.7 in (400 mm)
Boom Swing Angle LH / RH 85 / 50 degrees
Gradeability 30 degrees

Working Range

Arm Type Standard Arm Long Arm
Arm Length 54.1 in (1375 mm) 69.7 in (1770 mm)
Max Digging Height 217.1 in (5515 mm) 227.6 in (5780 mm)
Max Dumping Height 149.0 in (3785 mm) 159.8 in (4060 mm)
Max Digging Depth 131.9 in (3350 mm) 148.4 in (3770 mm)
Max Vertical Wall Digging Depth 104.1 in (2645 mm) 120.5 in (3060 mm)
Max Digging Reach 225.8 in (5735 mm) 241.3 in (6130 mm)
Max Digging Reach at Ground Level 219.5 in (5575 mm) 231.9 in (5890 mm)
Min Swing Radius 92.1 in (2340 mm) 99.9 in (2410 mm)
Min Swing Radius (When Boom Swing) 69.7 in (1770 mm) 73.2 in (1860 mm)
Max Blade Lift 17 in (430 mm) 17 in (430 mm)
Max Blade Depth 13 in (330 mm) 13 in (330 mm)
Bucket Digging Force 7644 lbf (34 kN) 7644 lbf (34 kN)
Arm Crowd Force 4946 lbf (22 kN) 4946 lbf (22 kN)

Swing Mechanism

Swing Speed 9 rpm
Drive Method Hydraulic drive
Swing Reduction Planetary gear, double-reduction
Swing Circle Lubrication Grease-bathed
Swing Lock Mechanical disk brake

Undercarriage

Shoe Type Box section
Shoe Size 15.75 in (400 mm)
Track Frame X-frame
Track Gauge 61.4 in (1560 mm)
Track Adjuster Hydraulic type
Number Of Shoes Per Side 39 (steel)
Number Of Carrier Rollers Per Side 1
Number Of Track Rollers Per Side 4

Drive System

Steering Control Two levers with pedals
Drive Method Hydrostatic
Maximum Drawbar Pull 9442 lbf (42 kN)
Maximum Travel Speed: High 2.86 mph (4.6 km/h)
Maximum Travel Speed: Low 1.74 mph (2.8 km/h)
Service Brake Hydraulic lock
Parking Brake Mechanical disk brake

Engine Details

Number Of Cylinders 4
Engine Make Komatsu
Engine Model Komatsu 4D88E-6
Net Power 39 hp (28.5 kw)
Power Measured @ 2400 rpm
Displacement 134 cu in (2.2 L)
Engine Type Direct injection
Aspiration Naturally aspirated
Emission Standards EPA Tier 4 Final

Electric System

Operation Voltage 12 V
Alternator 40 A
Battery 72 Ah
Starter 2.3 kW

Hydraulic System

Type Komatsu HydrauMind closed-center system with load sensing valves and pressure compensated valves
Hydraulic Pump Type 2x Variable capacity pump + 1x Gear pump
Max. Oil Flow 2x 14.1 gal/min (53.5 L/min) + 1x 8.9 gal/min (33.8 L/min)
Hydraulic Motor (Travel) 2x Variable capacity
Hydraulic Motor (Swing) 1x Fixed capacity
Max. Pressure Setting 3840 psi (26500 kPa)

Operating Weight

Type Rubber Shoes, 400 mm (Cab / Canopy) Steel Shoes, 400 mm (Cab / Canopy)
Operating Weight 10836 lb (4915 kg) / 10571 lb (4795 kg) 10979 lb (4980 kg) / 10714 lb (4860 kg)
Ground Pressure 3.70 psi (0.26 kg/cm2) / 3.56 psi (0.25 kg/cm2) 3.84 psi (0.27 kg/cm2) / 3.70 psi (0.26 kg/cm2)

Service Refill Capacities

Fuel Tank Capacity 17.2 gal (65 L)
Cooling System Capacity 2.3 gal (8.5 L)
Hydraulic System Capacity 5.3 gal (20 L)
Engine Oil Capacity 2 gal (7.5 L)
Final drive (Each side) 0.2 gal (0.8 L)

Bucket

Type GP Bucket Narrow Bucket 1 Narrow Bucket 2
Bucket Capacity 0.18 yd3 (0.14 m3) 0.14 yd3 (0.11 m3) 0.072 yd3 (0.055 m3)
Width With Side Cutters 23.6 in (600 mm) 19.7 in (500 mm) 14.6 (370 mm)
Width Without Side Cutters 20.9 in (530 mm) 16.9 in (430 mm) 11.8 in (300 mm)
Bucket Weight 242.5 lb (110 kg) 209.4 lb (95 kg) 198.4 lb (90 kg)
Number of Teeth 4 3 3

Blade

Standard Blade Weld edge type
Optional Blade 1 Bolt on cutting edge (B.O.C.) type
Optional Blade 2 PAT Blade
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