Performance and versatility in a compact hydraulic excavator
Models include: PC30MR-5/PC35MR-5/PC45MR-5/PC55MR-5
| Model | Komatsu 3D88E-7* |
| Type | Water-cooled, direct injection |
| Number of cylinders | 3 |
| Bore | 88 mm |
| Stroke | 90 mm |
| Piston displacement | 1.642 L |
| Horsepower: | |
| SAE J1995 - Gross | 18.2 kW |
| ISO 9249 / SAE J1349 - Net | 18.2 kW |
| Rated rpm |
2 200 |
| Fan drive method for radiator cooling | Mechanical |
*EPA Tier 4 Final emissions certified
| Model | Komatsu 3D88E-7* |
| Type | Water-cooled, direct injection |
| Number of cylinders | 3 |
| Bore | 3.46 in |
| Stroke | 3.54 in |
| Piston displacement | 100.2 in³ |
| Horsepower: | |
| SAE J1995 - Gross | 24.4 HP |
| ISO 9249 / SAE J1349 - Net | 24.4 HP |
| Rated rpm |
2,200 |
| Fan drive method for radiator cooling | Mechanical |
*EPA Tier 4 Final emissions certified
| Number of selectable working modes |
2 |
| Main pumps: | |
| Pumps for | Boom, arm, bucket, and travel circuits |
| Type | Variable displacement piston x 2 |
| Maximum flow | 32 L/min |
| Pumps for | Swing and blade |
| Type | Gear x 2 |
| Swing pump maximum flow | 18.7 L/min |
| Swing pressure maximum | 20.1 MPa |
| Blade pump maximum flow | 9.9 L/min |
| Blade pressure maximum | 21.5 MPa |
| Max auxiliary flow rate at 20.5 MPa / 2 973 psi |
50 L/min |
| Hydraulic valve | 8 spool |
| Operating method | Hydraulic assist |
| Travel motor: | |
| Type | Variable displacement piston x 2 (with counterbalance valve and travel shaft brake) |
| Swing motor: | |
| Type | Fixed displacement piston type x 1 (with brake valve and swing shaft brake) |
| Hydraulic cylinders: (number of cylinders) |
bore x stroke x rod diameter |
| Boom (1) | 85 x 525 x 50 mm |
| Arm (1) | 75 x 595 x 45 mm |
| Bucket (1) | 65 x 490 x 40 mm |
| Boom swing (1) | 80 x 500 x 40 mm |
| Blade (1) | 95 x 135 x 45 mm |
| Number of selectable working modes |
2 |
| Main pumps: | |
| Pumps for | Boom, arm, bucket, and travel circuits |
| Type | Variable displacement piston x 2 |
| Maximum flow | 18.3 gpm |
| Pumps for | Swing and blade |
| Type | Gear x 2 |
| Swing pump maximum flow | 4.9 gpm |
| Swing pressure maximum | 2,915 psi |
| Blade pump maximum flow | 2.61 gpm |
| Blade pressure maximum | 3,118 psi |
| Max auxiliary flow rate at 20.5 MPa / 2,973 psi |
13.2 gpm |
| Hydraulic valve | 8 spool |
| Operating method | Hydraulic assist |
| Travel motor: | |
| Type | Variable displacement piston x 2 (with counterbalance valve and travel shaft brake) |
| Swing motor: | |
| Type | Fixed displacement piston type x 1 (with brake valve and swing shaft brake) |
| Hydraulic cylinders: (number of cylinders) |
bore x stroke x rod diameter |
| Boom (1) | 3.35 x 20.7 x 1.97 in |
| Arm (1) | 2.9 x 23.4 x 1.77 in |
| Bucket (1) | 2.55 x 19.29 x 1.57 in |
| Boom swing (1) | 3.14 x 19.6 x 1.57 in |
| Blade (1) | 3.34 x 5.11 x 1.77 in |
| Steering control |
Two levers with pedals |
| Drive method | Hydrostatic |
| Gradeability | 30° |
| Maximum travel speed (rubber): (Auto-shift) |
|
| High | 4.6 kph |
| Low | 2.6 kph |
| Service brake | Hydraulic lock |
| Parking brake | Mechanical disc |
| Maximum drawbar pull | 33 kN 3400 kgf |
| Steering control |
Two levers with pedals |
| Drive method | Hydrostatic |
| Gradeability | 30° |
| Maximum travel speed (rubber): (Auto-shift) |
|
| High | 2.85 mph |
| Low | 1.61 mph |
| Service brake | Hydraulic lock |
| Parking brake | Mechanical disc |
| Maximum drawbar pull | 7,495 lbf. |
| Center frame | X-frame |
| Track frame | Box-section |
| Track type | Sealed |
| Track adjuster | Greased gun |
| Number of carrier rollers (each side) | 1 |
| Number of track rollers (each side) | 4 |
| Center frame | X-frame |
| Track frame | Box-section |
| Track type | Sealed |
| Track adjuster | Greased gun |
| Number of carrier rollers (each side) | 1 |
| Number of track rollers (each side) | 4 |
| Engine | 6.7 L |
| Hydraulic system | 20 L |
| Cooling system | 3.3 L |
| Fuel tank | 41 L |
| Final drive (each side) | 0.6 L |
| Engine | 1.77 US gal |
| Hydraulic system | 5.3 US gal |
| Cooling system | 0.87 US gal |
| Fuel tank | 10.8 US gal |
| Final drive (each side) | 0.15 US gal |
| ROPS canopy, rubber belt track 300 mm | |
| Operating Weight | 3,090 kg |
| Ground pressure ISO 16754 | 26.7 kPa |
| ROPS cab, rubber belt track 300 mm | |
| Operating Weight | 3,240 kg |
| Ground pressure ISO 16754 | 29.3 kPa |
| ROPS canopy, rubber belt track 12” | |
| Operating Weight | 6,812 lbs. |
| Ground pressure ISO 16754 | 3.87 psi |
| ROPS cab, rubber belt track 12” | |
| Operating Weight | 7,143 lbs. |
| Ground pressure ISO 16754 | 4.25 psi |
| Width x height | 1 550 x 355 mm |
| Width x height | 5 ft. 1 in x 1 ft. 2 in |