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Current number of specifications

Komatsu 960E-2K Rock Truck

Selected Dimensions

A. Overall Length503.3 ft in153400 mm
C. Overall Height25.2 ft in7670 mm
D. Wheelbase21.8 ft in6630 mm


Electric Drive
Ratio38:12 :1
ControlAC Torque Control System
Maximum speed (km/h)​64.5
Drive SystemKomatsu AC Drive
Dual Fan Main BlowerAlternator Flow- 266 m3/min 9,380 cfm Wheel Motor Flow- 419 m3/min 14,800 cfm
Electrical System
Alternator24 volt, 250 amp
Lighting24 volt
Cranking motorsTwo/24 volt
Suspension System
Capacity Struck194.9 yd3149 m3
Heaped (2:1, SAE)279.9 yd3214 m3
StructureFlat floor configuration
Weight89999.3 lb40823 kg
Canopy sheet06mm 0.24" 690 Mpa 1,00,000 psi tensile strength steel
Front sheet10 mm 0.39" Outer, 12mm 0.47" Center, 1379 mPa 200,000 psi tensile strength steel
Side sheet10 mm 0.39" 1379 Mpa 2,00,000 psi tensile strength steel
Floor sheet16 mm 0.63" Outer, 19mm 0.75" Center, 1379 mPa 200,000 psi tensile strength steel
Payload719996.6 lb326585 kg
Loading Height23.5 ft in7.2 m
Number of Cylinders18
Power Measured @1900 rpm
Displacement4759.9 cu in78 L
Fuel TypeDiesel
Horse Power: SAE J19953500.1 hp2610 kw
Horse Power: ISO 9249 / SAE J13493345.9 hp2495 kw
Operating cycle4-cycle
Weight (Wet)25904.3 lb11750 kg
Weight (Dry)24802 lb11250 kg
Service Brake TypeOil-cooled, hydraulic-actuated, multiple disc brakes at each wheel.
Parking Brake Type​Multiple disc, spring-applied, hydraulically-released, dry brakes on inboard end of each wheel motor rotor shaft. Rated to hold on ±15% grade at maximum gross vehicle weight.
Emergency brakesAutomatically applied prior to hydraulic system pressure dropping below level required to meet secondary stopping requirements.​
​Wheel brake locksSwitch-activated​
​Electric dynamic retarder (max.)4620
Max. service apply pressure (kPa)2749.9 psi18960 kPa
Total friction area per brake (cm2)103729
Fuel Tank1400.1 gal5300 L
Cooling system189.9 gal719 L
Hydraulic system350 gal1325 L
Crankcase90.1 gal341 L
Motor gear box37 gal140 L
Gross Weight1270021.3 lb576072 kg
Empty Weight549998.2 lb249475 kg
Weight Distribution Front - empty49.5 %
Weight Distribution Rear - empty50.5 %
Weight Distribution Front - loaded33 %
Weight Distribution Rear - loaded67 %
Standard tire53/80 R63
Hydraulic System
Hoist cylinderTwo 3-stage dual-acting outbound cylinders and internal cushion valve, over-centre damping.
Relief pressureHoist and brake cooling- 17237 kPa 2,500 psi Steering and brake-20685 kPa 3,000 psi
Hoist timePower-up loaded: 24 sec; Power-down: 14 sec; Float-down empty:24 sec
Turning circle diameter (SAE)105 ft in32 m
Reservoir250 gal946.4 L
FiltrationIn-line replaceable elements
SuctionSingle, full flow, 100 mesh
Hoist and steeringDual, in-line, high pressure
PumpsTwo pumps, single package, end of alternator
Turning Radius52.5 ft in16000 mm
Overall Length503.3 ft in153400 mm
Overall Height25.2 ft in7670 mm
Wheelbase21.8 ft in6630 mm
Width Over Tires-Rear28.7 ft in8740 mm