• 118,385 - 118,825 lbs Operating Weight
  • 527 @1800 rpm Horsepower
  • 8.4 - 9.2 yd¬≥ Bucket Capacity


The WA600-6 has two features that make it standout as a top producer in quarries across North America. The operator uses his left pedal to control the modulated clutch which makes it easy to control the massive tractive effort to reduce tire slippage, reduce shift shock and control speed when truck loading. Advanced joystick control puts fast but precise control at the operator’s left hand.


Advanced Joystick Steering System

AJSS is a feedback steering system which has been incorporated to allow steering and forward and reverse selection to be controlled by wrist and finger control. With the feedback function added, the machine steering angle is defined exactly the same angle as the lever tilt angle.

Automatic Transmission with Mode Select System

This operator controlled system allows the operator to select manual shifting or two levels of automatic shifting (low, and high). Auto L mode is for fuel saving operation with the gear shift timing set at lower speeds than Auto H mode. Therefore Auto L mode keeps the engine in a relatively low rpm range for fuel conservation while yielding adequate tractive force by depressing the accelerator pedal.

Dual-Mode Engine Power Select System

This wheel loader offers two selectable operating modes— E and P. The operator can adjust the machine’s performance with the selection switch.


E Mode:

This mode provides maximum fuel efficiency for general loading.


P Mode:

This mode provides maximum power output for hard digging operation or hill climb.

Electronic Pilot Control levers

The finger control EPC work equipment levers have light operating effort and short stroke facilitating easy operation. The operator’s comfort is further increased by the full large size adjustable arm rests. Combined with CLSS, this system allows the following new functions for easy and efficient operation:

• Remote Boom Positioner with shockless stop function: The highest and lowest position of the bucket can be set from cab to match any truck body. Once the positioner is set, the bucket is smoothly stopped at desired position with no shock.

• Remote bucket digging angle control: The digging bucket angle can be easily set from cab to match of ground condition.

High-rigidity Frames and Loader Linkage

The front and rear frames and the loader linkage have more torsional rigidity to secure resistance against increased stress due to the use of a larger bucket. Frame and loader linkage are designed to accommodate actual working loads, and simulated computer testing proves its strength.

Lock-up Torque Converter

The Komatsu designed lock-up torque converter provides increased production efficiency, reduced cycle times and optimum fuel savings in load & carry or hill-climb operations. This optional feature allows the operator to activate the system on/off with a switch located on the right-side control panel.

Modulated Clutch System

The Modulated Clutch System controls the tractive effort with left brake pedal from 100% to 20% of the converter output torque.

• Useful for smooth speed reduction when approaching dump trucks for loading.

• Easy control of tire slippage.

• Reduction of shocks in shifting from forward to reverse.

Pillar-less Large Cab

A wide pillar-less flat glass provides excellent front visibility. The wiper arm covers a large area to provide great visibility even on rainy days. The cab area is the largest in its class providing maximum space for the operator.

Rear Access Stairs

For the purpose of easily boarding and exiting the machine, rear access stairs with handrails are provided. The step width, clearance, and the step angle have been designed for safety climbing both up and down. A step light provides light for night boarding.

Sweeper Wing

To protect the tire, the WA600 provides a Sweeper Wing on both sides of the bucket.

Variable Displacement Piston Pump and Closed-center Load Sensing System

New design variable displacement piston pump combined with the CLSS delivers hydraulic flow just as the job requires preventing wasted hydraulic pressure. Minimized waste loss contributes to better fuel economy.


Axles and Final Drives

Drive system Four-wheel drive.
Front Fixed, full-floating.
Rear Center-pin support, full-floating, 26° total oscillation.
Reduction gear Spiral bevel gear.
Differential gear Conventional type
Final reduction gear Planetary gear, single reduction


Service brakes: Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake: Wet disc brake
Emergency brake Parking brake is commonly used


Model Komatsu SAA6D170E-5
Type Water-cooled, 4-cycle
Aspiration Turbocharged, aftercooled, cooled EGR
Number of cylinders 6
Bore x stroke 6.69" x 6.69" 170 mm x 170 mm
Piston displacement 1413 in³ 23.15 ltr
Governor all-speed, electronic
SAEJ1995 - Gross 530 HP 396 kW
ISO 9249 / SAEJ1349 - Net 527 HP 393 kW
Hydraulic fan at maximum speed 502 HP 374 kW
Rated rpm 1800 rpm
Fan drive method for radiator cooling Hydraulic
Fuel system Direct injection
Lubrication system:
Method Gear pump, force lubrication
Filter Full-flow type
Air cleaner Dry type with double elements and dust evacuator, plus dust indicator
EPA Tier 3 and EU stage 3A emissions certified.

Hydraulic System

Steering system:
Hydraulic pump Piston pump
Capacity at rated rpm 43.1 U.S. gal/min 163 ltr/min
Relief valve setting 4,980 psi 350 kgf/cm²
Hydraulic cylinders:
Type Double-acting, piston type
Number of cylinders 2
Bore x stroke 4.5" x 20" 115 mm x 510 mm
Loader control:
Hydraulic pump Piston pump
Capacity at rated rpm 63.1 + 63.1 U.S. gal/min 239 + 239 ltr/min
Relief valve setting 4,980 psi 350 kgf/cm²
Hydraulic cylinders:
Type Double-acting, piston type
Number of cylinders: Bore x Stroke Bore x Stroke
Boom cylinder / 2 7.9" x 42" 200 mm x 1067 mm
Bucket cylinder / 1 8.9" x 30.6" 225 mm x 776 mm
Control valve 2-spool type
Control positions:
Boom Raise, hold, lower, and float
Bucket Tilt-back, hold, and dump
Hydraulic cycle time (rated load in bucket):
Raise 9.3 sec
Dump 2.3 sec
Lower (Empty) 4.1 sec

Service Refill Capacities

Cooling system 38.8 U.S. gal 147 ltr
Fuel tank 189.7 U.S. gal 718 ltr
Engine 22.7 U.S. gal 86 ltr
Hydraulic system 117.0 U.S. gal 443 ltr
Axle (each front and rear) 41.0 U.S. gal 155 ltr
Torque converter and transmission 21.9 U.S. gal 83 ltr

Steering System

Type Articulated type, full-hydraulic power steering
Steering angle 43° each direction.
Minimum turning radius at the center of outside tire 23'3" 7075 mm


Torque converter Type 3-element, single-stage, double-phase
Transmission Type Full-powershift, planetary type
Travel speed measured with 35/65-33 tires: Forward Reverse
1st 4.2 mph
6.7 km/h
4.5 mph
7.3 km/h
2nd 7.3 mph
11.7 km/h
8.0 mph
12.8 km/h
3rd 12.6 mph
20.3 km/h
13.7 mph
22.0 km/h
4th 21.0 mph
33.8 km/h
23.0 mph
37.0 km/h


  • 2-spool valve for boom and bucket controls
  • 3990 mm / 13'1" boom
  • Advanced Joystick Steering System (AJSS)
  • Alternator, 90 A/24 V
  • AM/FM stereo radio cassette
  • Auto air conditioner
  • Auto shift transmission with mode select system
  • Back-up alarm
  • Back-up lamp
  • Battery disconnect switch
  • Batteries, 200 Ah/12 V x 2
  • Boom kick-out
  • Bucket positioner
  • Counterweight, large 3780 kg / 8,333 lb
  • Directional signal
  • Electronically Controlled Suspension System (ECSS)
  • Engine RPM set
  • Engine, Komatsu SAA6D170E-5 diesel
  • EPC fingertip control levers with automatic leveler and positioner
  • Floormat
  • Front fender
  • Hard water arrangement (corrosion resister)
  • Hydraulic-driven fan with reverse rotation
  • In-line filter, steering
  • In-line filter, high pressure hydraulic
  • Lift cylinders and bucket cylinder
  • Lock-up clutch torque converter
  • Main monitor panel with Equipment Management Monitoring System (EMMS)
  • Radiator mask, lattice type
  • Rear access stairs
  • Rear defroster (electric)
  • Rear under view mirror
  • Rearview mirrors
  • Rear window washer and wiper
  • Rims for 35/65-R33 L4 tires
  • ROPS/FOPS Level 2 cab
  • Seat belt, 76 mm / 3" wide
  • Seat, suspension type with reclining
  • Semi-auto digging system
  • Service brakes, wet disc type
  • Starting motor, 11.0 kW/24 V x 2
  • Sun visor
  • Transmission, 4 forward and 4 reverse
  • Vehicle Health Monitoring System (VHMS)


  • 3850 mm / 12'8" boom
  • Brake cooling system
  • Bucket, excavating spade nose w/teeth-6.4 m/ 8.4 yd 
  • Bucket, excavating spade nose w/teeth-7.0 m/ 9.2 yd
  • Bucket, excavating straight edge w/teeth-6.5 m/ 8.5yd 
  • Bucket, excavating straight edge w/teeth-7.0 m/ 9.2 yd
  • Bucket, excavating straight edge w/BOCE-6.5 m/ 8.5 yd
  • Bucket, excavating straight edge w/BOCE-7.0 m / 9.2 yd
  • Bucket, stock pile, spade nose w/teeth-7.0 m / 9.2 yd
  • Bucket, load & carry, spade nose w/teeth-7.8 m / 10.2 yd
  • Emergency steering (SAE)
  • Limited slip differential (F&R)
  • Load & carry spec arrangement
  • Power train underguard
  • Rear fender


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