• 76,897 - 77,856 lbs Operating Weight
  • 353 @1900 rpm Horsepower
  • 5.9 - 8.2 yd³ Bucket Capacity


Move more material with less fuel and a more comfortable operator’s environment! The WA500-8 has a newly designed bucket with increased capacity and improved digging performance to maximize production. The EPA Tier 4 Final certified engine incorporates enhanced controller logic for lower fuel consumption. A new high capacity, heated, air suspension seat provides premium comfort. Added technology includes an integrated load meter and an easier-to-use auto digging system to fill the bucket with reduced operator effort.

WA500-8 Walkaround  >


Dual-Mode Engine Power Select System

This wheel loader offers two selectable operating modes
— Power (P) and Economy (E).
P Mode: This mode provides maximum power output for hard- digging operation or hill climbing.
E Mode: This mode provides maximum fuel efficiency for general loading.

Automatic Digging System

The new automatic digging system actuates the bucket tilt and lifting operations by sensing the pressure applied to the work equipment. This system can alleviate operator's fatigue and optimize bucket load. This system is activated through the LCD color monitor panel.

New Operator Seat with Electronic Pilot Control (EPC) Levers

A new standard, heated, air-suspension seat provides enhanced support on rough roads and dampens machine vibrations, providing a more comfortable ride for the operator. An EPC-lever console is built into, and moves with, the seat. The angle of the armrest is fully adjustable for optimum operator comfort. A secondary F-N-R switch is incorporated in to work equipment lever configurations.

Operator Identification Function

An operator identification (ID) code can be set for each operator, and used to manage operation information of individual machines through KOMTRAX. Data sent from KOMTRAX can be used to analyze operation status by operator job, as well as by machine.

Komatsu SmartLoader Logic

The WA500-8 features Komatsu SmartLoader Logic, which controls engine torque to match machine demands. For example, engine torque needs are higher for digging in V-shape loading, but lower when driving with an empty bucket. This system optimizes the engine torque for all applications to minimize fuel consumption. Komatsu SmartLoader Logic functions automatically and doesn’t interfere with operation, saving fuel without decreasing production.

Large-Capacity Torque Converter

The Komatsu-designed power train features a large capacity torque converter for optimum efficiency. The WA500-8 has improved efficiency in V-shape loading applications because the increased tractive effort does not require full throttle. The large capacity torque converter allows the loader to up-shift gears faster for improved acceleration and hill climbing ability. The WA500-8 achieves high gear ranges and maintains high travel speed when working in load-and-carry applications. In most applications, production is increased and fuel consumption is reduced, resulting in improved fuel efficiency.

Standard Rear View Monitoring System

The dedicated, full-color monitor on the right side of the cab provides the operator with a rear view of the machine. This monitor can be always on or only on when the loader shifts into reverse. Guidelines provide the operator with visual cues for the width of the loader.

Remote Bucket and Boom Positioner

The operator can set the bucket angle and remote boom positioner from the cab. Both upper and lower boom limits are adjustable in the cab with the push of a button. The bucket positioner can store three horizontal settings, allowing the operator to easily change attachments without resetting the bucket level position.

Komatsu Integrated Load Meter System

The integrated load meter system displays information directly to the machine’s main monitor display and information is also available remotely via KOMTRAX. Load sub total and cancel functions are performed with buttons integrated to the machine work levers.

Swing-Out Type Cooling Fan and Wider Core Radiator

The cooling fan swings out for easier cleaning. The coolers feature wider-spaced cooling fins to reduce clogging.


Axles and Final Drives

Drive system Four-wheel drive
Front Fixed, full-floating
Rear Center-pin support, full-floating, 20° 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 SAA6D140E-7*
Type Water-cooled, 4-cycle
Aspiration Variable geometry turbo-charged, after-cooled, cooled EGR
Number of cylinders 6
Bore x Stroke 140 mm x 165 mm 5.51" x 6.50"
Piston displacement 15.24 ltr 930 in³
Governor All-speed, electronic
SAE J1995 - Gross 266 kW 357 HP
ISO 9249 / SAE J1349 - Net 263 kW 353 HP
Rated rpm 1900 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 4 Final emissions certified

Hydraulic System

Steering system:
Hydraulic pump Piston pump
Capacity at rated rpm 120 ltr/min 31.7 U.S. gal/min
Relief valve setting 24.5 MPa / 250 kgf/cm² 3,555 psi
Hydraulic cylinders:
Type Double-acting, piston type.
Number of cylinders 2
Bore x stroke 100 mm x 486 mm 3.9" x 19.1"
Loader control:
Hydraulic pump Piston pump
Capacity at rated rpm 320 ltr/min 84.8 U.S gal/min
Relief valve setting 34.3 MPa / 350 kgf/cm² 4,980 psi
Hydraulic cylinders:
Type Double-acting, piston type.
Number of cylinders: Bore x Stroke: Bore x Stroke:
Boom cylinder / 2 160 mm x 898 mm 6.3" x 35.4"
Bucket cylinder / 1 185 mm x 675 mm 7.3" x 26.6"
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 7.2 sec
Dump 1.7 sec
Lower (Empty) 4.2 sec

Service Refill Capacities

Cooling system 110 ltr 29.1 U.S. gal
Fuel tank 473 ltr 124.9 U.S. gal
Engine 37 ltr 9.8 U.S. gal
Hydraulic system 337 ltr 89.0 U.S. gal
Axle (each front and rear) 95 ltr 25.1 U.S. gal
Torque converter and transmission 71 ltr 18.8 U.S. gal
DEF tank 36 ltr 9.5 U.S. gal

Steering System

Type Articulated type, fully-hydraulic power steering
Steering angle 36° (40° to max end stop)
Minimum turning radius at the center of outside tire 7050 mm 23' 2"


Torque converter three-elements, one-stage, two-phase
Transmission Full-powershift, planetary type
Travel speed: (Measured with 23.5-25 tires) Forward Reverse
1st gear 7.5 km/h
4.7 mph
8.5 km/h
5.3 mph
2nd gear 12.9 km/h
8.0 mph
12.9 km/h
8.0 mph
2nd gear (Lock-up clutch ON) 13.1 km/h
8.1 mph
13.1 km/h
8.1 mph
3rd gear 22.2 km/h
13.8 mph
24.7 km/h
15.3 mph
3rd gear (Lock-up clutch ON) 23.7 km/h
14.7 mph
26.6 km/h
16.5 mph
4th gear 35.5 km/h
22.1 mph
38.0 km/h
23.6 mph
4th gear (Lock-up clutch ON) 37.3 km/h
23.2 mph
38.0 km/h
23.6 mph


  • Alternator, 90 A
  • Auto shift transmission with mode select system
  • Automatic digging system
  • Automatic hydraulic-driven fan with automatic reverse rotation
  • Back-up alarm
  • Batteries, 160 Ah/12 V (2)
  • Battery disconnect
  • Boom kick-out, in-cab adjustable 
  • Bucket positioner, in-cab adjustable, 3 positions
  • Color rear view camera and monitor
  • Counterweight, standard and additional
  • Electronically Controlled Suspension System (ECSS)
  • Engine, Komatsu SAA6D140E-7 diesel
  • Engine shut-off system, electric
  • Engine shutdown secondary switch
  • EPC fingertip controls with F-N-R switch, two levers
  • Equipment Management Monitoring System (EMMS)
    --Lights (central warning, brake oil pressure, engine oil pressure, parking brake, cooling fan reverse, KDPF restriction, seat belt caution, Komtrax message)

    --Gauges (Engine water temperature, ecology, Fuel level, DEF levels, Hydraulic oil temperature, speedometer/tachometer)
  • Front fenders
  • Fuel pre-filter with water separator
  • Horn, electric
  • Komatsu SmartLoader Logic
  • Komatsu Auto Idle Shutdown
  • KOMTRAX® Level 5
  • Lift cylinders and bucket cylinder
  • Lights:
    --Back-up light, LED

    --Stop and tail light, LED

    --Turn signal, two front and two rear with hazard switch

    --Working lights, halogen, two front cab mount

    --Working lights, halogen, two front fender mount

    --Working lights, halogen, two rear
  • Load meter*
  • Loader linkage with standard lift arm
  • Lock-up torque converter
  • Parking brake, electric
  • Radiator, wider core
  • Radiator mask, swing out
  • Rear full fenders
  • Rear view mirrors, outside (2) inside (2)
  • Rims for 29.5-25 tires
  • ROPS/FOPS Cab Level 2:
    --2 x DC12V electrical outlets

    --Auto air conditioner

    --Cigarette lighter, 24V

    --Color LCD/TFT multi-monitor

    --Cup holder

    --Floor mat

    --Operator seat, reclining, air suspension type, heated

    --Radio, AM/FM with AUX input jack

    --Rear defroster, electric

    --Seatbelt, two-point retractable, 76mm
    3” width

    --Space for Lunch box

    --Steering wheel, tilt and telescopic

    --Sun visor, front window

    --Windshield washer and wiper, front with intermittent

    --Windshield washer and wiper, rear
  • Service brakes, wet disc type
  • Starting motor, 11 kW
  • Transmission, four forward and four reverse
  • Two-spool valve for boom and bucket control
  • Vandalism protection kit


  • Auxiliary steering (SAE)
  • Brake cooling system
  • Engine pre-cleaner with extension
  • High lift boom
  • Joystick/wheel steering control system
  • Limited slip differential (F&R)
  • Mono-lever loader control with transmission F-N-R switch
  • Power train guard
  • Three-spool valve with lever and piping
  • Various tire options, radial and bias
  • Various bucket options