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Komatsu Excavators PC88MR-8
PC88MR-8 Hydraulic Excavator
The PC88MR-8 is a link between minis and mid-size excavators. The PC88MR-8 Hydraulic Excavator has a swing boom, tight tail swing, three track options and backfill blade like a mini but is built to have the reliability and durability of larger excavators.
Engine
Model
Komatsu SAA4D95LE-5
Type
Water cooled, 4-cycle, direct injection
Aspiration
Turbocharged, and air-to-air aftercooled
Number of cylinders
4
Piston displacement
199 in³
3.26 ltr
Horsepower @ 1950 rpm:
Net (ISO 9249/SAE J1349)
65 HP
49 kW
Electric System
Operation voltage
24 V
Battery
55 Ah/2 x 12
Alternator
35 A/24 V
Starter
4.5 kW/24 V
Hydraulic System
Type - HydrauMind (Hydraulic Mechanical Intelligence New Design) system, Closed-center system with load-sensing valves and pressure-compensated valves
Main pumps:
Type
Variable displacement, axial piston
Maximum flow
42.3 u.s. gal/min
160 ltr/min
Type
Fixed displacement gear
Maximum flow
18.5 U.S. gal/min
70 ltr/min
Hydraulic motors:
Travel
2 x piston motor with parking brake
Swing
1 x piston motor with swing holding brake
Relief valve setting:
Implement, travel circuit
3,840 psi
26.5 MPa / 270 kgf/cm²
Swing and blade circuit
3,060 psi
21.1 MPa 215 kgf/cm²
Performance
Travel speed:
High
3.2 mph
5.1 km/hr
Low
1.8 mph
2.9 km/hr
Swing speed
10 rpm
Ground pressure
5.4 psi
0.38 kg/cm²
Max. drawbar pull
15,050 lbf
66.9 kN / 6820 kgf
Gradeability
35°
Bucket digging force (ISO)
13,780 lb
6250 kg
Arm crowd force (ISO)
8,160 lb
3700 kg
Swing System
Driven by
Hydraulic motor
Swing reduction
Planetary gear
Swing circle lubrication
Grease-bathed
Swing lock
Automatic, with oil immersed discs
Drives & Brakes
Steering control
Two levers with pedalsr
Drive method
Fully hydrostatic
Service brake
Hydraulic lock
Parking brake
Mechanical disc
Undercarriage
Center frame
X-frame
Track frame
Box-section
Track type
Sealed track
Track adjuster
Hydraulic
Number of carrier rollers
1 each side
Number of track rollers
5 each side
Refill Capacities
Fuel tank
33.0 u.s. gal
125 ltr
Radiator
2.6 u.s. gal
10 ltr
Engine
2.9 u.s. gal
11 ltr
Final drive, each side
0.3 u.s. gal
1.1 ltr
Swing drive
0.7 U.S. gal
2.8 ltr
Hydraulic tank
14.8 u.s. gal
56 ltr
Operating Weight (approximate)
Operating weight including 3405 mm / 11'2" one-piece boom, 2100 mm / 6'11" arm, SAE heaped 0.28 m³ / 0.37 yd³ backhoe bucket, blade, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.
