The Komatsu PC55MR-3 Mini Excavator offers impressive capabilities in a compact package. With a maximum digging depth of 12.5 ft and a reach along the ground of 20 ft, this excavator is well-suited for various construction and landscaping tasks. Powered by a 38.2 hp engine and equipped with a hydraulic pump flow capacity of 37.2 gpm, the PC55MR-3 delivers efficient performance on the job site. Its compact dimensions, including a shipping height of 8.4 ft and width to outside of tracks of 6.5 ft, make it versatile and maneuverable in tight spaces. The operating weight of 11375.9 lbs and undercarriage features such as a ground pressure of 4.4 psi ensure stability and traction during operation.
Blade
Komatsu PC55MR-3 Mini Excavator Blade specifications
Blade Height
14.00 in (35.56 cm)
Blade Width
6.50 ft (1.98 m)
Capacities
Komatsu PC55MR-3 Mini Excavator Capacities specifications
Coolant
2.30 gal (8.71 l)
Engine Oil
2.00 gal (7.57 l)
Fuel Tank
17.20 gal (65.10 l)
Hydraulic Tank
5.30 gal (20.06 l)
Dimensions
Komatsu PC55MR-3 Mini Excavator Dimensions specifications
Boom Swing Angle Lh
85 degrees
Boom Swing Angle Rh
50 degrees
Bucket Offset Lh
2.07 ft (0.63 m)
Bucket Offset Rh
2.89 ft (0.88 m)
Crawler Length
8.27 ft (2.52 m)
Overall Height
8.37 ft (2.55 m)
Overall Length
18.21 ft (5.55 m)
Overall Width
6.44 ft (1.96 m)
Tail Swing Radius
3.48 ft (1.06 m)
Track Gauge
5.12 ft (1.56 m)
Track Shoe Width
1.32 ft (0.40 m)
Drive System
Komatsu PC55MR-3 Mini Excavator Drive System specifications
Drive Method
Hydrostatic
Type Of Travel Brake
Hydraulic lock type
Type Of Travel Shoe
Rubber
Electrical System
Komatsu PC55MR-3 Mini Excavator Electrical System specifications
Alternator
40 A
Battery
72 Ah
Operation Voltage
12 V
Starter
2.3 kW
Engine
Komatsu PC55MR-3 Mini Excavator Engine specifications
Engine Model
Komatsu 4D88E–6
Engine Type
Direct injection
Fan Drive Type
Mechanical
Flywheel Horsepower
38.30 hp (28.56 kw)
Number Of Cylinders
4
Piston Displacement
133.60 cu in (2,189.32 cu cm)
Power Measured @
2400 rpm
Hydraulic System
Komatsu PC55MR-3 Mini Excavator Hydraulic System specifications
Auxiliary Hydraulic Flow
18.50 gpm (70.02 lpm)
Hydraulic Motor (Swing)
fixed capacity x 1
Hydraulic Motor (Travel)
Variable capacity x 2
Max. Oil Flow
53.5 x 2 + 33.8 14.1 x 2 + 8.9
Max. Pressure Setting
3840 psi
Type Of Hydraulic Pump
Variable capacity x 2 gear x 1
Operational
Komatsu PC55MR-3 Mini Excavator Operational specifications
Arm Crowd Force – Iso
2440 kgf
Arm Size
5.40 ft (1.65 m)
Arm Type
Standard?
Boom Size
9.60 ft (2.93 m)
Boom Type
Standard?
Bucket Crowd Force – Iso
3980 kgf
Bucket Size – Kga Standard Gp
0.2 cu yd
Digging Depth – Maximum
12.50 ft (3.81 m)
Digging Reach – Maximum
20.50 ft (6.25 m)
Maximum Reach @ Ground Level
20.00 ft (6.10 m)
Swing Radius
3.50 ft (1.07 m)
Performance
Komatsu PC55MR-3 Mini Excavator Performance specifications
Arm Crowd Force (Iso)
5,379.30 lbs (2,440.01 kg)
Bucket Digging Force (Iso)
8,774.40 lbs (3,980.01 kg)
Gradeability
30 degrees
Ground Pressure
4.1 psi
Max. Traction Force
9,435.80 lbs (4,280.01 kg)
Swing Speed
9 rpm
Travel Speed (Maximum)
2.90 mph (4.67 kph)
Travel Speed (Minimum)
1.80 mph (2.90 kph)
Undercarriage
Komatsu PC55MR-3 Mini Excavator Undercarriage specifications
Adjustment Of The Track Tension
Grease
Number Of Carrier Rollers Per Side
1
Number Of Shoes Per Side
39 (steel)
Number Of Track Rollers Per Side
4
Weights
Komatsu PC55MR-3 Mini Excavator Weights specifications
Operating Weight
11,375.90 lbs (5,160.03 kg)
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