• 724,000 lbs Max Gross Vehicle Weight
  • 2,000 @1900 rpm Gross HP
  • 200 U.S. tons Capacity

730E-8 Electric Drive Mining Truck

The 203 ton capacity 730E-8 is a very versatile electric drive mining truck that features 1,860 flywheel horsepower. The cab has an integral ROPS, air ride seat, dynamic retarding and power steering with auto emergency steering to make the operator comfortable and more productive.


Automatic Speed Control

While in retard or propel, the operator has the ability to select a comfortable travel speed. Automatic Speed Control simultaneously manages the speed of each wheel independently to allow for any immediate adjustments needed during slippery underfoot conditions.

Automotive Style Instrument Panel

The 730E comes with a new operator friendly dash configuration which includes lighted gauges, switches, and information panel. This allows the operator to see the status of the machine during operation and informs them of any faults. An instructive message will appear after any fault is detected on the machine.

Built-in ROPS and FOPS Structure

Integral ROPS/FOPS Level 2 cab. These structures conform to ISO standards 3471 and 3449.

Electric Dynamic Retarder

The 2387 kW 3,200 HP retarding system provides state ofthe art braking capacity for navigating today’s mining applications which contain steep continuous descents and sharp switchbacks. The continuous retarding capacity enhances the productivity of the vehicle operator, while eliminating the need for excessive mechanical braking effort.

Fully Hydraulic Dry Disc Brakes

The 730E comes standard with four-wheel hydraulically actuated dry disc service brakes. By using a fully hydraulic braking system, the formation of water and sediments - typical in air actuated braking systems - is no longer present. This prevents contamination, freezing and corrosion from affecting service brake component life.

GEB35 with Combo Brake

The GEB35 is a proven wheelmotor design based on the GEB25 and 788. It has a standard gear ratio of 30.8:1 and is designed for 12% equivalent grades.

Hydropneumatic Suspension

Hydrair II® is a suspension system that utilizes four nitrogen-over-oil cylinders. This suspension system is designed to maximize machine productivity by providing the operator with a smooth and comfortable ride. By absorbing shocks to the chassis during operation, Hydrair II® contributes to the durability of the machine’s frame and components.

IGBT AC Electric Drive System

Invertex II® AC control system offers independent control of the rear wheel motors, which in turn provides outstanding traction-ability during wet and slippery conditions, thus improving tire wear and operator confidence.
The air cooled Insulated Gate Bipolar Transistor (IGBT)inverter system technology provides the highest available reliability. The IGBT inverter is more compact and much simpler than the design of its predecessor, the Gate Turn Off (GTO) inverter, which improves serviceability and routine maintenance.

Tight Turning Radius

By using double acting hydraulic steering cylinders with a six point articulation linkage,the power steering system provides steering control with minimal operator effort. The turning radius is 13.6 m44' 6", which provides excellent maneuverability for tight loading and dumping conditions. The steering accumulators comply with ISO-5010 standards.

Traction - Spin-Slide - Control

During slippery events caused by inclement weather conditions and/or application severity, the wheel Spin-Slide technology will detect and correct any wheel spin control events. Spin-Slide Control operates automatically and independently of the service brakes. During propulsion, "wheel slip control” reduces non-productive wheel spin in low traction conditions. During retarding, "wheel slide control” prevents wheel lockup and subsequent sliding.



All-welded steel flat floor body with horizontal bolsters and full canopy. Eyebrow, rear wheel rock ejectors, body up sling and rubber mounts on frame are standard.

Floor sheet - Outer (1379 MPa 200,000 psi tensile strength steel) 0.63'' 16 mm
Floor sheet - Center (1379 MPa 200,000 psi tensile strength steel) 0.75'' 19 mm
Front sheet (1379 MPa 200,000 psi tensile strength steel) 0.39'' 10 mm
Side sheet (1379 MPa 200,000 psi tensile strength steel) 0.31'' 8 mm
Canopy sheet (690 MPa 100,000 psi tensile strength steel) 0.24'' 6 mm
Capacity struck 121 yd³ 93 m³
SAE heaped 2:1 165 yd³ 126 m³
Standard Komatsu body weight 62,100 lb 28169 kg

Braking System

System meets ISO 3450/1996.
Service brakes: all-hydraulic actuated.
Front: Wheel speed disc. Three calipers on a 1213 mm / 47.75" O.D. disc
Rear Dual disc armature speed. Two 635 mm / 25" O.D. discs per side. One caliper per disc.
Emergency brakes Automatically applied prior to hydraulic system pressure dropping below level required to meet secondary stopping requirements.
Wheel brake locks Switch-activated
Parking brakes Spring-applied, hydraulically released, with speed application protection.
Electric dynamic retarder (max.) 3,200 hp / 2387 kW Continuously rated high-density blown grids w/retard at engine idle and retard in reverse propulsion.


Advanced Operator Environment with integral 4-post ROPS/FOPS Level 2 cab, adjustable air suspension seat w/lumbar support and arm rests, full-size passenger seat, maximum R-value insulation, tilt and telescoping steering wheel, electric windshield wipers w/washer, tinted glass, power windows, Komatsu Payload Weighing System, 61,000 Btu/hr heater and defroster, 19,900 Btu/hr air conditioning (HFC - 134A refrigerant).

Cooling System

L&M radiator assembly, split-flow, with deaerator-type top tank

Radiator frontal area 50.1 ft² 4.65 m²

Electric Drive

AC/DC current
Alternator GTA-49
Dual impeller in-line blower 13,900 cfm 393 m³/min
Control AC Torque Control System
Motorized wheels* GEB35 Induction Traction Motors
Ratio 30.8:1
Speed (maximum) 40 mph 64.5 km/h
* Wheel motor application depends upon gross vehicle weight, haul road grade, haul road length, rolling resistance and other parameters. Komatsu and G.E. must analyze each job condition to assure proper application.

Electric System

4 x 8D 1450 CCA, 12 volt, in series/parallel, 220-ampere-hour batteries, bumper-mounted with disconnect switch.
Alternator 24-volt 250 amp
24 volt
Cranking motors
Two/24 volt


Make and model* Komatsu SSDA16V159
Fuel Diesel
Number of cylinders 16
Operating cycle 4 cycle
Gross horsepower** @ 1900 rpm 2,000 HP 1492 kW
Net flywheel power*** @ 1900 rpm 1,884 HP 1405 kW
* Optional Tier 4 emission compliant engine for North American market. Non-emissionized engine for markets outside of North America.
** Gross horsepower is the output of the engine as installed in this machine, at governed rpm and with engine manufacturer’s approved fuel setting. Accessory losses included are water pump, fuel pump and oil pump.
***Net flywheel power is the rated power at the engine flywheel minus the average accessory losses. Accessories include fan and charging alternator. Rating(s) represent net engine performance in accordance with SAE J1349 conditions.


Advanced technology, full butt-welded box sectional ladder-type frame with integral ROPS supports, integral front bumper, rear tubular cross members, steel castings at all critical stress transition zones, rugged continuous horsecollar. 

Plate material 70,000 psi 482.6 mPa tensile strength steel
Casting material 90,000 psi 620.5 mPa tensile strength steel
Rail width 11.02'' 280 mm
Rail depth (minimum) 31.38'' 797 mm
Top and bottom plate thickness 1.26'' 32 mm
Side plate thickness 0.75'' 19 mm
Drive axle mounting
Pin and spherical bushing
Drive axle alignment
Swing link between frame and axle

Hydraulic System

Steering Accumulator assisted with twin double acting cylinders provide constant rate steering. Secondary steering automatically supplied by accumulator.
Turning circle diameter (SAE) 89' 27.2 m
Reservoir 135 U.S. gal 511 L
Filtration In-line replaceable elements
Suction Single, full-flow, 100 mesh
Hoist and steering Dual, in-line, high pressure
Brake component cabinet Above deck, easily accessible with diagnostic test connections
Hoist Two 3-stage dual-acting outboard cylinders, internal cushion valve, over-center dampening
Hoist times:
Power-up loaded 19 sec
Power-down 10.5 sec
Float--down empty 12 sec
Pumps: Two pumps, single package, end of alternator
Hoist and brake cooling Tandem gear pump with output of 666 lpm 176 gpm at 1900 rpm and 18961 kPa 2,500 psi
Steering and brake Pressure-compensating piston pump with output of 254 lpm 67 gpm at 1900 rpm and 19134 kPa 2,775 psi
System relief pressures:
Hoist 2,500 psi 17237 kPa
Steering and brake 4,000 psi 27580 kPa

Service Capacities

Cooling system 117 U.S. gal 441 L
Crankcase* 59 U.S. gal 223 L
Hydraulic system 210 U.S. gal 795 L
Motor gear box (each) 10 U.S. gal 38 L
Fuel 800 U.S. gal 3028 L
*Includes lube oil filters


Variable rate hydro-pneumatic with integral rebound control
Max. front stroke 12.28'' 312 mm
Max. rear stroke 10.98'' 279 mm
Max. rear axle oscillation ±5.3°

Tires and Rims

Rock service, tubeless, tires
Standard tire* 37.00 R57
Flange mount rim 686 mm x 1448 mm x 152 mm 27'' x 57'' x 6'' rim assembly. Rims rated at 758 kPa 110 psi cold inflation pressure.
* Tires should meet application requirements for tkph/tmph, tread, compound, inflation pressure, ply rating or equivalent, etc.


  • Air cleaners, Donaldson® w/evacuators
  • Alternator (24 volt/250A)
  • Auto lubrication system w/ground level fill & level indicator
  • Back up alarm
  • Batteries–4 x 8D (1450 CCA’s)
  • Battery charging cable and socket
  • Body over center device
  • Body impact plate
  • Brakes: dry front & rear
  • Cruise speed control
  • Deck guard rails
  • Electric start
  • Fast-fill fuel system (in tank and left side remote)
  • Filters, high pressure hydraulic
  • Fuel tank sight gauge (3)
  • Ground level radiator fill
  • L&M Radiator
  • Mud flaps
  • Muffled exhaust–deck-mounted
  • Power supply, 24 volt and 12 volt DC
  • Quick disconnects (hoist and diagnostics)
  • Radiator sight gauge
  • Removable power module unit (radiator, engine, alternator, blower)
  • Reverse retarding
  • Service center–LH
  • Thermostatic fan clutch


  • All hydraulic service brakes w/auto apply
  • Auxiliary hydraulic system
  • Battery disconnect switch
  • Brake lock and drive system interlock
  • Circuit breakers, 24 volt
  • Dedicated auxiliary circuits in operator cab (ladder lights, 2-way radios, fire suppression power)
  • Diagonal ladder tread cap plates
  • Dynamic retarding with continuous rated element grids
  • Engine access guard rail
  • Engine shutdown at ground level
  • Hoist propulsion interlock
  • Horns (electric–front and back-up)
  • Hydraulic tank ladder
  • Integral ROPS/FOPS Level 2 cab
  • Isolation mounted cab
  • Maintenance and power lockout
  • Parking brakes with warning light & speed application protection
  • Power steering w/auto secondary steering
  • Protective deck handrails
  • Pre-shift brake test
  • Pump driveline protector
  • Radiator fan guard
  • RH & LH multi-cambered convex mirrors
  • Seat belts
    - Operator 3-point 76 mm 3" retractable
    - Passenger lap 76 mm 3" retractable
  • Slip-resistant / dimpled surface on walkways
  • Stairway


  • AC drive interface display
  • Actia Dash & Status Panel
    - Body up
    - Parking brake
    - Propulsion system not ready
    - No DC link voltage
    - High engine oil temp - No propel
    - Service brake applied
    - Wheel brake lock applied
    - Maintenance monitor
  • Air cleaner vacuum gauges
  • Air conditioner HFC-134A
  • AM/FM radio with CD, USB & MP3
  • Column mounted speed control
  • Digital tachometer and speedometer
  • Dome light
  • Engine hourmeter, oil pressure gauge, coolant temperature gauge, hydraulic oil temperature gauge
  • Engine shutdown w/ “Smart Timer” delay\
  • Floor mat (double barrier)
  • Fuel gauge in cab
  • Fuel low level light and buzzer
  • Gauges (w/backlight)
  • Headlight switch
  • Heater and defroster (heavy-duty)
  • Heater switch
  • High beam selector and indicator
  • Horn (center of steering wheel)
  • Indicator lights (blue)
    - Engine service
    - KOMTRAX Plus snapshot (IM)
  • Insulation (Max R-Value)
  • Komatsu Payload Meter III®
  • Operator seat, adjustable w/air suspension, lumbar support and arm rests
  • Panel lighting (adjustable)
  • Passenger seat, mechanical suspension
  • Power windows
  • Pressurized cab air system w/fan on
  • Single brake/retarder pedal
  • Starter key switch
  • Sunvisor (adjustable)
  • Tilt & telescoping steering column
  • Voltmeter (battery output)
  • Windshield (tinted plate)
  • Windshield wiper (dual) and washer (electric)


  • Auxiliary box (LED)
  • Back-up lights–R and L - deck mount (2) halogen
  • Brake and retard lights on top of cab (LED)
  • Brake cabinet (LED)
  • Clearance lights (LED)
  • Control cabinet service light (LED)
  • Dynamic retarding, rear (2) (LED)
  • Engine compartment service lights
  • Fog lights (2) halogen
  • Halogen headlights- all high & low beam positions (10)
  • HID-style backup/ berm light
  • Manual back-up light, switch and indicator
  • Payload lights R and L (LED)
  • Platform lights R, L and Center
  • Recessed corner marker/ signal lighting (LED)
  • Stairway lights
  • Stop & tail lights (4) (LED)
  • Turn signals (LED)
  • Under-hood service lights


  • Accumulators (cold weather)
  • Antifreeze (-40°C)
  • Body Liners
  • Bumper mounted headlights
  • Extended canopy
  • Eyebrow
  • Fire extinguisher 9 kg / 20 lb
  • Heated body
  • HID headlights
  • Hot start engine coolant (220V 2-2500W)
  • Hot start engine oil (220V 2-500W)
  • Hot start hydraulic oil
  • Hydraulic folding access ladder
  • ISRI 3 point seat
  • Mudflaps on hydraulic tank & fuel tank
  • Scoreboard PLM III Display
  • Service center - RH
  • Shutters (radiator)
  • Smart (speed) rims
  • Special language decals
  • Suspensions, cold weather
  • Wiggins Quick Fluid Fill & Engine Oil Evacuation System