Komatsu PC55MR-5 SMALL EXCAVATORS
Product Feature
New Engine Technologies
The PC55MR-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 (140mm for PC55MR-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 |
85 mm x 733 mm x 55 mm | 3.35" x 28.9" x 2.17" |
| Bucket / 1 |
75 mm x 580 mm x 50 mm | 2.95" x 22.8" x 1.97" |
| Boom swing / 1 |
95 mm x 630 mm x 50 mm | 3.74" 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 |
