Komatsu WA1200-6

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26.2 yd³. 1765 hp. Incredible numbers for Komatsu’s largest, most productive wheel loader, the WA1200-6. From the low vibration cab the operator uses his advanced joystick control and modulated clutch drive system to maneuver in tight areas to load trucks up to 320 ton capacity. High stability and breakout force give the operator the confidence he needs to keep up with the production demands of today’s mines.


Model   Komatsu SDA16V160E-2
Type   Water-cooled, 4-cycle
Aspiration   Turbocharged and aftercooled
Number of cylinders   16
Bore x stroke 6.26'' x 7.48'' 159 mm x 190 mm
Piston displacement 3,661 in³ 60 ltr
Governor   Electronic fuel control
Flywheel horsepower:    
SAE J1995 - Gross 1892 HP 1411 kW
ISO 9249/SAE J1349 - Net 1765 HP 1316 kW 1765 hP
Rated rpm   1800 rpm
Fan drive method for radiator cooling   Mechanical
Fuel system   Modular common rail system direct injection
Lubrication system    
Method   Screw pump, forced lubrication
Filter   Full-flow
Air cleaner   Dry-type with double elements and automatic dust evacuation with dust indicator on monitor
Torque converter - Type   3-element, single-stage, single-phase
Transmission - Type   Full power shift, planetary gear with modulated clutch
Travel Speed (Measured with 60/80 R57 tires):    
1st Forward 3.8 mph 6.1 km/h
1st Reverse 3.9 mph 6.3 km/h
2nd Forward 6.9 mph 11.1 km/h
2nd Reverse 7.1 mph 11.4 km/h
3rd Forward 11.6 mph 18.7 km/h
3rd Reverse 12.0 mph 19.3 km/h
Axles and Final Drives    
Drive system   Four-wheel drive
Front   Fixed, full floating
Rear   Center-pin support, full-floating, 16˚ total oscillation
Reduction gear   Spiral bevel gear
Differential gear   Straight bevel gear
Final reduction gear   Planetary gear, double reduction, oil bath
Service brakes   Hydraulically actuated, wet, multi-disc brakes actuated on four wheels.
Parking brake   Wet, multi-disc, hydraulically-released, spring applied in the transmission.
Secondary brake   Parking brake is commonly used
Steering System    
Type   Articulated, fully-hydraulic power steering
Steering angle   40° each direction
Turning radius outside corner of bucket and teeth 47'0" 14330 mm
Bucket Controls    
Control positions:    
Boom   Raise, hold, lower, and float
Bucket   Tilt-back, hold, and dump
Hydraulic System    
Rated capacity (discharge flow) @1800 engine rpm    
Loader pump 269 gal/min 1018 ltr/min
Steering pump 167 gal/min 633 ltr/min
Switch pump 167 gal/min 633 ltr/min
Relief valve setting 4,550 psi 31.4 MPa 320 kg/cm²
Control valves   A double spool closed-center hydraulic valve and a steering valve combined with a demand valve to provide optimum flow.
Hydraulic cylinders/Number of cylinders Bore x stroke: Bore x stroke:
Boom/2 14.2'' x 72.2'' 360 mm x 1835 mm
Bucket/2 11.8'' x 38.8" 300 mm x 985 mm
Steering/2 8.9'' x 26.0'' 225 mm x 660 mm
Control positions:    
Boom   Raise, hold, lower, and float
Bucket   Tilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket):    
Raise   14.8 sec
Dump   3.2 sec
Lower (empty)   5.3 sec

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