A new boom and arm design increases the working range of the machine for more digging reach. New engine and hydraulic pump control technology improves operational efficiency and lowers fuel consumption. A powerful Komatsu SAA6D107E-2 engine provides a net output of 147 kW 196 HP. This engine is EPA Tier 4 Interim and EU stage 3B emissions certified. Komatsu Variable Geometry Turbocharger (KVGT) uses a hydraulic actuator to provide optimum air flow under all speed and load conditions. Komatsu Diesel Particulate Filter (KDPF) captures 90% of particulate matter and provides automatic regeneration that does not interfere with daily operation. Large displacement high efficiency pumps provide higher flow output and efficient operation. Enhanced working modes are designed to match engine speed, pump delivery, and system pressure to the application. Komatsu Closed Center Load Sensing (CLSS) hydraulic system provides quick response amd smooth operation to maximize productivity. Large LCD color monitor panel: ■ 7" high resolution screen ■ Provides "Eco-Guidance" for fuel efficient operation ■ Enhanced attachment control Rearview monitoring system (standard) Equipment Management Monitoring System (EMMS) continuously monitors machine operation and vital systems to identify machine issues and assist with troubleshooting. Enhanced working environment ■ High back, heated, and air suspension operator seat ■ Integrated ROPS cab design (ISO 12117-2) ■ Cab meets ISO Level 1 Operator Protective Guard (OPG) top guard (ISO 10262) Komatsu designed and manufactured components Guardrails (standard) located on the machine upper structure provide a convenient work area in front of the engine. Swing out cooler design provides easy access to service and clean the cooler assembly. Battery disconnect switch allows a technician to disconnect the power supply before servicing the machine. Robust undercarriage design uses many of the same components that are used on larger machines. KOMTRAX^® equipped machines can send location, SMR and operation maps to a secure website utilizing wireless technology. Machines also relay error codes, cautions, maintenance items, fuel levels, and much more.

Engine

Model		Komatsu SAA6D107E-2*
Type		Water-cooled, 4-cycle, direct injection
Aspiration		Turbocharged, aftercooled, cooled EGR
Number of cylinders		6
Bore	4.21''	107 mm
Stroke	4.88''	124 mm
Piston displacement	408 in³	6.69 ltr
Horsepower
SAE J1995 : Gross	213 HP	159 kW
ISO 9249/SAE J1349 : Net	196 HP	147 kW
Rated rpm		2050 rpm
Fan drive type		Mechanical
Governor		All-speed control, electronic.
*EPA Tier 4 Interim and EU stage 3B emissions certified

Hydraulics

Number of selectable working modes		6
Main pump:
Type		Variable displacement piston type
Pumps for		Boom, arm, bucket, swing, and travel circuits
Maximum flow	126.5 U.S. gal/min	479 ltr/min
Supply for control circuit		Self-reducing valve
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	5,400 psi	380 kgf/cm²/ 37.3 MPa
Travel circuit	5,400 psi	380 kgf/cm² / 37.3 MPa
Swing circuit	4,190 psi	295 kgf/cm²/ 28.9 MPa
Pilot circuit	470 psi	33 kgf/cm² / 3.2 MPa
Hydraulic cylinders:
Number of cylinders	Bore x Stroke x Rod Diameter	Bore x Stroke x Rod Diameter
Boom / 2	5.5" x 51.2" x 3.9"	140 mm x 1300 mm x 100 mm
Arm / 1	5.9" x 64.3" x 4.3"	150 mm x 1635 mm x 110 mm
Bucket / 1	5.5" x 39.7" x 3.9"	140 mm x 1009 mm x 100 mm

Drives & Brakes

Steering control		Two levers with pedals
Drive method		Hydrostatic
Maximum drawbar pull	56,000 lb	249 kN / 25400 kg
Gradeability	35°	70%
Maximum travel speed: (Auto-Shift)
High	3.4 mph	5.5 km/h
Mid	2.5 mph	4.1 km/h
Low	1.9 mph	3.0 km/h
Service brake		Hydraulic lock
Parking brake		Mechanical disc brake

Swing System

Drive method		Hydrostatic
Swing reduction		Planetary gear
Swing circle lubrication		Grease-bathed
Service brake		Hydraulic lock
Holding brake/Swing lock		Mechanical disc brake
Swing speed		10.5 rpm
Swing torque	64,292 ft lbs	8889 kg•m

Undercarriage

Center frame		X-frame
Track frame		Box-section
Seal of track		Sealed track
Track adjuster		Hydraulic
Number of shoes		48 each side
Number of carrier rollers		2 each side
Number of track rollers		8 each side

Coolant & Lubricant Capacity (refilling)

Fuel tank	105.7 U.S. gal	400 ltr
Coolant	9.5 U.S. gal	36 ltr
Engine	6.1 U.S. gal	23.1 ltr
Final drive, each side	2.2 U.S. gal	8.5 ltr
Swing drive	1.9 U.S. gal	7.2 ltr
Hydraulic tank	34.9 U.S. gal	132 ltr
Hydraulic system	66.0 U.S. gal	250 ltr

Operating Weight (approximate)

Shoes	28"	700 mm
Operating Weight	67,396 lb	30570 kg
Ground Pressure	7.17 psi	0.50 kg/cm²
Shoes	31.5''	800 mm
Operating Weight:	68,234 lb	30950 kg
Ground Pressure	6.36 psi	0.45 kg/cm²
Shoes	33.5"	850 mm
Operating Weight:	68,654 lb	31141 kg
Ground Pressure	6.01 psi	0.42 kg/cm²
Component Weights
Arm including bucket cylinder and linkage
3200 mm / 10'6" arm assembly	3,157 lb	1432 kg
3500 mm / 11'6" arm assembly	3,316 lb	1504 kg
One piece boom including arm cylinder
6150 mm / 20'2" boom asssembly	5,397 lb	2448 kg
Boom cylinders x 2	509 lb	231 kg
Counterweight	12,148 lb	5510 kg
1.41 m³ / 1.85 yd³ bucket - 48" width	2,399 lb	1088 kg