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Komatsu Trucks 730E-8
730E-8 Electric Drive Truck
The 203 ton capacity 730E-8 is a very versatile electric drive 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. To make the 730E more productive, a trolley assist option is available for circumstances where an overhead electrified trolley system can be used.
Engine
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.
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.
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.
Body
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. Pivot exhaust heating optional.
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).
Frame
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
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.
Suspension
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°
Cooling System
L&M radiator assembly, split-flow, with deaerator-type top tank
Radiator frontal area
50.1 ft²
4.65 m²
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
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
Electric System
4 x 8D 1450 CCA, 12 volt, in series/parallel, 220-ampere-hour batteries, bumper-mounted with disconnect switch.