Komatsu 730E-8

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Features

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.

Specifications

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.     
     
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 153 yd³ 117 m³
SAE heaped 2:1 193 yd³ 148 m³
Standard Komatsu body weight 62,100 lb 28169 kg
Cab    
     
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.    
     
Alternator 24-volt 250 amp
Lighting    
24 volt    
Cranking motors    
Two/24 volt    

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