• 81,791 - 85,495 lbs Operating Weight
  • 269 @ 1950 rpm Horsepower
  • 0.89 - 2.56 yd³ Bucket Capacity

HB365LC-3 Large Excavator

The HB365LC-3 is Komatsu’s latest generation hybrid excavator, utilizing a Komatsu SAA6D-114E-6 Tier 4 Final engine and electric swing drive to reduce fuel consumption by up to 20% (depending on the application). The electric swing motor-generator is more efficient than a conventional excavator, capturing wasted kinetic energy and storing it in a Komatsu ultra-capacitor. Stored energy from the ultra-capacitor is then sent to either the electric swing motor, or an engine mounted motor-generator to provide fast response from an ultra-low 700rpm idle speed. The new hybrid HB365LC-3 continues to raise the industry bar for hybrid technology and fuel savings with an excavator that has both power and efficiency, while reducing environmental impact.


Powerful Komatsu SAA6D114E-6 Engine

A powerful Komatsu SAA6D114E-6 engine provides a net output of 201 kW 269 HP. This engine is EPA Tier 4 Final emissions certified.

Large Displacement High Efficiency Pump

Large displacement hydraulic implement pumps provide high flow output at lower engine RPM as well as operation at the most efficient engine speed.

Electric Swing Motor-Generator

An electric swing motor-generator recovers energy during swing braking. The motor-generator also accelerates the swing of the upper structure more efficiently than a conventional hydraulic motor and provides excellent swing performance. Dedicated lubrication and cooling systems are used for reliability and durability.

Motor Generator

A motor-generator is positioned between the engine and hydraulic pumps to assist in rapid engine response from ultra low idle when required. The generator produces electric power and charges the capacitor when required.

Ultra Capacitor Assembly

The ultra-capacitor assembly includes an inverter that switches the AC electricity from the generator motor and swing motor into DC electricity for storage in the capacitor. Since capacitors require migration of electrons and ions for charging and discharging, they can transfer power much faster than batteries, which use chemical reactions to produce electricity. The industrial quality designed inverter and capacitor provide long service life, and require no periodic maintenance.

Energy Management Screen

The hybrid system operating status can be easily displayed on the monitor to show how energy is flowing through the system components which include capacitor charging/ discharging and engine assist by the generator/motor.

Viscous Fan Clutch

A temperature controlled viscous fan clutch improves engine efficiency and reduces engine power requirements when operating in cooler temperatures.

Optional KomVision

Images from 4 camera's are combined to display a "birds eye" view of the area around the machine for improved operator awareness. A second display with selectable individual camera views of the left, rear, and right sides is easily changed using the F4 button. A red line continuously shows where the counterweight will be during swinging and a camera icon indicates which camera is being displayed on individual camera display screen.



Komatsu SAA6D114E-6*
Water-cooled, 4-cycle, direct injection
Turbocharged, aftercooled, cooled EGR
Number of cylinders
Bore 114 mm
Stroke 144.5 mm
Piston displacement 8.85 lt 540 in³

SAE J1995 / Gross 202 kW 271 HP
ISO 9249/SAE J1349 / Net 201 kW 269 HP
Fan at maximum speed / Net 197 kW
251 HP
Rated rpm 1950
Fan drive method for radiator cooling
Mechanical with viscous fan clutch
All-speed control, electronic.
*EPA Tier 4 Final emissions certified


Type: HydrauMind (Hydraulic Mechanical Intelligence) system, closed-center system with load sensing valves and pressure compensated valves

Number of selectable working modes
Main pump:

Variable displacement piston type
Pumps for
Boom, arm, bucket, swing, and travel circuits
Maximum flow 535 ltr/min 141.3 gal/min
Supply for control circuit
Self-reducing valve
Hydraulic motors:

2 x axial piston motors with parking brake
1 x axial piston motor with swing holding brake
Relief valve setting:

Implement circuits 38.2 MPa / 390 kg/cm²
5,540 psi
Travel circuit 38.2 MPa / 390 kg/cm² 5,540 psi
Pilot circuit 3.2 MPa 33 kg/cm² 470 psi
Hydraulic cylinders / Number of cylinders: Bore x Stroke x Rod Diameter Bore x Stroke x Rod Diameter
Boom / 2 140 mm x 1480 mm x 100 mm 5.5" x 58.3" x 3.9"
Arm / 1 160 mm x 1825 mm x 110 mm
6.3" x 71.9" x 4.3"
Bucket for 3200 m 10'5" and 4000 mm 13'2" Arms / 1 140 mm x 1285 mm x 100 mm 5.5" x 50.6" x 3.9"

Drives and Brakes

Steering control
Two levers with pedals
Drive method
Fully hydrostatic
Maximum drawbar pull 290 kN / 29570 kg 65,191 lb
Gradeability 70% 35°
Maximum travel speed: (Auto-Shift)

High 5.5 km/h 3.4 mph
Mid 4.5 km/h 2.8 mph
Low 3.2 km/h 2.0mph
Service brake
Hydraulic lock
Parking brake
Mechanical disc brake

Swing System

Drive method
Electric drive
Swing reduction
Planetary gear
Swing circle lubrication
Service brake
Electric brake
Holding brake / Swing lock
Mechanical disc brake
Swing speed
Swing torque 11386 kg•m 82,313 ft lbs


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

Coolant and Lubricant Capacity (refilling)

Fuel tank 605 ltr 159.8 U.S. gal
Coolant (Engine) 42.0 ltr
11.1 U.S. gal
Ultra capacitor cooling system
11.7 ltr 3 U.S. gal
Engine 38.5 ltr 10.2 U.S. gal
Final drive, each side 9.0 ltr 2.4 U.S. gal
Swing drive 15.6 ltr 4.12 U.S. gal
Swing motor - generator 3.6 ltr 0.95 U.S. gal
Motor-generator 8.5 ltr 2.25 U.S. gal
Hydraulic tank 188 ltr 49.7 U.S. gal
DEF tank 39.2 ltr 10.3 U.S. gal

Sound Performance

Exterior – ISO 6395 101 dB(A)
Operator – ISO 6396 69 dB(A)

Operating Weight (approximate)

Operating weight including 6500 mm 21'3" one-piece HD boom, 3185 mm 10'5" arm, 850 mm 33.5" track shoes, SAE heaped 1.96 m3 2.56 yd3 bucket, rated capacity of lubricants, coolant, full fuel tank, operator, and standard equipment.

Triple-Grouser Operating Weight Ground Pressure (ISO 16754)
700 mm
37654 kg
83,012 lb
0.62 kg/cm2
8.79 psi
800 mm
38054 kg
83,894 lb
0.55 kg/cm2
7.77 psi
850 mm
38254 kg
84,335 lb
0.52 kg/cm2
7.35 psi



  • Auto idle
  • Auto idle shut down programmable
  • Automatic engine warm-up system
  • Dry type air cleaner, double element
  • Engine, Komatsu SAA6D114E-6
  • Engine coolant to -25°C -13°F
  • Engine overheat prevention system
  • Fuel pre-filter (10 micron, with water separator)
  • Fuel priming pump
  • Viscous fan clutch, temperature controlled


  • Ultra capacitor with inverter
  • Electric swing motor/generator
  • Engine mounted motor/generator
  • Hybrid component cooling system


  • Alternator, 24 V/90 A
  • Batteries, large capacity (2 x 12V)
  • Battery master disconnect switch
  • Electric horn
  • Power ports (2) 24V to 12V
  • Starting motor, 24 V/11 kW
  • Working lights, 2 (Boom and RH front)


  • Arm holding valve
  • Boom holding valve
  • Power maximizing system
  • PPC hydraulic control system
  • Service valve, one additional function
  • Two-mode setting for boom
  • Working mode selection system


  • Carbody swivel guard
  • Pump/engine compartment partition
  • Revolving frame deck guards
  • Revolving frame under covers
  • Slip resistant plates
  • Thermal and fan guards
  • Track roller guards (center section)


  • 3 speed travel with auto shift
  • Carrier roller (2 each side)
  • Hydraulic track adjusters (Each side)
  • Track roller, 8 each side
  • Track shoe, triple grouser, 850 mm 33.5"


  • Auxiliary input (3.5 mm jack)
  • Automatic climate control/air conditioner/heater/defroster
  • High back air suspension seat with heat
  • Large high resolution 7" LCD monitor
  • Lock lever, work equipment
  • Mirrors (RH and LH)
  • Operator protective top guard (OPG), level 1
  • Rear view monitor system - one camera
  • ROPS cab (ISO 12117-2)
  • Seat belt indicator
  • Seat belt, retractable, 76 mm 3"
  • Secondary engine shut down switch
  • Skylight, opening


  • AM/FM radio
  • Counterweight, 6320 kg 13,933 lb
  • Equipment Management Monitoring System (EMMS)
  • KOMTRAX® level 5.0
  • Operator identification system
  • Radiator and oil cooler removable debris screen
  • Rear reflector
  • Travel alarm



  • 3185 mm 10'5" arm assembly
  • 3185 mm 10'5" arm assembly with piping
  • 4020 mm 13'2" arm assembly
  • 4020 mm 13'2" arm assembly with piping


  • 6500 mm 21'3" HD boom assembly
  • 6500 mm 21'3" HD boom assembly with piping

Cab guards:

  • Lower front window guard
  • Full front guard, OPG Level 1
  • Full front guard, OPG Level 2
  • Bolt-on top guard, OPG Level 2


  • KomVision surround camera system
  • Hydraulic control unit, 1 actuator
  • Proportional control handles for auxiliary hydraulics
  • Rain visor
  • Revolving frame undercovers, heavy duty
  • Sun visor
  • Track roller guards, full length
  • Track shoes, triple grouser, 700 mm 28"
  • Track shoes, single grouser, 800 mm 31.5"
  • Working lights, front, two additional cab mounted