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Komatsu 860E-1K

860E-1K

Every part focused on productivity



  • Gross horsepower: 2,700 HP @ 1,900 rpm
  • Operating weight: 1,001,700 lbs.
  • Capacity: 280 st

Specifications

Engine

Make and modelKomatsu SSDA16V160 Tier 2
FuelDiesel
Number of cylinders   16
Operating cycle4 cycle
Gross horsepower* @ 1,900 rpm2,700 HP
Net flywheel power** @ 1,900 rpm2,550 HP
Weight (wet)21,182 lbs.

* 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

Drive System*    Komatsu AC Drive
AlternatorDRLDZ5010-AL
Dual Fan Main Blower14,800 CFM
ControlIGBT AC Torque Control System
Ratio35.52:1
Speed (maximum)   40 mph

* Wheel motor drive system application depends upon gross vehicle weight, haul road grade, haul road length, rolling resistance and other parameters. Komatsu must analyze each job condition to assure proper application.

Tires and Rims

Rock service, tubeless, radial tires:    
   Standard tire*50/80 R57
   Optional tire*50/90 R57
Flange mount rim34 x 57 x 6 in rim assembly
Typical total tire weight50,780 lbs.

* Tires should meet application requirements for tkph/tmph, tread, compound, inflation pressure, ply rating or equivalent, etc.

Cab

Advanced Operator Environment with isolation mounted, integral 4- post ROPS/FOPS Level 2 structure. Adjustable air suspension seat w/lumbar support, arm rests, and 3-point seat belt, full-size passenger seat, thermal insulation, tilt and telescoping steering wheel, electric windshield wipers w/washer, tinted safety glass, power windows, Komatsu Payload Weighing System, 61,000 Btu/hr heater and defroster, 19,900 Btu/hr air conditioning (HFC - 134A refrigerant).

Suspension

Variable rate hydro-pneumatic with integral rebound control

Max. front stroke12.32 in
Max. rear stroke11.50 in
Max. rear axle oscillation   ±10.4°

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
tensile strength steel
70,000 psi
Casting material
tensile strength steel
90,000 psi
Rail width12 in
Rail depth (minimum)34 in
Top and bottom plate thickness    1.57 in
Side plate thickness / Rear0.75 in
Side plate thickness / Front0.87 in
Drive axle mountingPin and spherical bushing
 
Drive axle alignmentSwing link between frame and axle

Body

All-welded steel flat floor body with horizontal bolsters and full canopy. Tapered body, body up sling and frame mounted rubber pads are standard. Heated body optional. 

Floor sheet
200,000 psi tensile strength steel / Outer    
0.63 in
Floor sheet
200,000 psi tensile strength steel / Center
0.75 in
Front sheet
200,000 psi tensile strength steel / Outer
0.39 in
Front sheet
200,000 psi tensile strength steel / Center
0.39 in
Side sheet
200,000 psi tensile strength steel
0.31 in
Canopy sheet
100,000 psi tensile strength steel
0.24 in
Capacity struck160 yd³
SAE heaped 2:1221 yd³
Standard Komatsu body weight74,171 lbs.

Braking System

Service brakes: oil-cooled, hydraulic-actuated, multiple disc brakes at each wheel. Traction system wheel spin control.

Max. service apply pressure    2,400 psi
Total friction area per brake11,693 in²
Secondary brakesAutomatically applied prior to hydraulic system pressure dropping below level required to meet secondary stopping requirements.
Wheel brake locksSwitch activated
Parking brakesAll wheel, spring applied, hydraulically released, integral wet disc park brake.
Electric dynamic retarder (max.)4,650 HP

Continuously rated high-density blown grids w/retard capacity at low speeds and retard in reverse propulsion.

Cooling System

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

Radiator frontal area   62.5 ft.²

Hydraulic System

Steering: Accumulator assisted with twin double acting cylinders provide constant rate steering. Secondary steering automatically supplied by accumulator.


 

Turning circle diameter (SAE)   102 ft. 
Reservoir250 US gal
FiltrationIn-line replaceable elements
SuctionSingle, full flow, 100 mesh
Hoist and steeringDual, in-line, high pressure
Brake component cabinetAbove deck, easily accessible with diagnostic test connections
HoistTwo 3-stage dual-acting outboard cylinders, internal cushion valve, over-center dampening
Hoist times: 
Power-up loaded22 s
Power-down (high idle)13 s
Float-down (low idle)23 s
PumpsTwo pumps, single package, end of alternator
Hoist and brake coolingTandem gear pump with output of 246 gpm at 1,900 rpm and 2,500 psi
Steering and brakePressure-compensating piston pump with output of 65 gpm at 1,900 rpm and 2,750 psi
System relief pressures: 
Hoist and brake cooling2,500 psi
Steering and brake4,000 psi
Quick disconnects standard for powering
disabled truck and for systems diagnostics.
 

Electrical System

4 x 8D 1400 CCA, 12 volt, in series/parallel, 180-ampere hour batteries

Alternator 24 volt, 250 amp
Lighting 24 volt
Cranking motors    Two/24 volt

Service Capacities

Cooling System125 US gal
Crankcase74 US gal
Hydraulic system350 US gal
Motor gear box (each)32 US gal
Inverter cooling system   6.5 US gal
Fuel1,200 US gal
Reserve Oil® System30 US gal
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