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Large wheel loader

WA500-8

  • Horsepower 263 kW @ 1 900 rpm 353 HP @ 1,900 rpm
  • Operating weight 34 880 – 35 315 kg 76,897 - 77,856 lbs.
  • Bucket capacity 4.5 – 6.3 m³ 5.9 – 8.2 yd³

Make every pass count

Tailor-made for loading on-highway trucks or your quarry needs that require a powerful engine and excellent stability, the WA500-8 has durable frames, axles and driveline components for efficient loading.

  • Optimized bucket load
  • Enhanced operator comfort
  • Increased productivity*
  • Reduced fuel costs*

    * compared to the prior model

Features and benefits

High performance powertrain

Large-capacity torque converter, combined with Komatsu Smart Loader Logic engine control system, automatically creates enough torque for each work phase, reducing fuel consumption with no decrease in production.

Brake cooling system

Efficient performance and added confidence in load and carry situations with front and rear brake cooling system.

Low fuel consumption

Reduce idle time and save fuel with auto idle shutdown. Smart Loader Logic acquires data from various sensors in the loader and controls engine torque based on job requirements.

Comfortable operator environment

A more comfortable ride with a new standard, heated, air-suspension seat that provides enhanced support on rough roads. A large, quiet, pressurized cab provides excellent visibility.

Ease of access

Efficient maintenance with ease of access with large, gull-wing-type engine doors and large steps on each side of the frame and front of the cab.

Advanced joystick steering system (AJSS)

Designed to reduce operator fatigue, the Advanced Joystick Steering System (AJSS) allows wrist and finger control of steering and directional travel.

Specifications for WA500-8

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US system Metric
Engine
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 x 165 mm
Piston displacement 915.24 L
Governor All-speed, electronic
Horsepower:  
SAE J1995 - Gross 266 kW
ISO 9249 / SAE J1349 - Net 263 kW
Rated rpm 1 900 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  
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 5.51 x 6.50 in
Piston displacement 930 in³
Governor All-speed, electronic
Horsepower:  
SAE J1995 - Gross 357 HP
ISO 9249 / SAE J1349 - Net 353 HP
Rated rpm 1,900 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  
Transmission

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 kph 8.5 kph
2nd gear 12.9 kph 12.9 kph
2nd gear (Lock-up clutch ON) 13.1 kph 13.1 kph
3rd gear 22.2 kph 24.7 kph
3rd gear (Lock-up clutch ON) 23.7 kph 26.6 kph
4th gear 35.5 kph 38.0 kph
4th gear (Lock-up clutch ON) 37.3 kph 38.0 kph

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 4.7 mph 5.3 mph
2nd gear 8.0 mph 8.0 mph
2nd gear (Lock-up clutch ON) 8.1 mph 8.1 mph
3rd gear 13.8 mph 15.3 mph
3rd gear (Lock-up clutch ON) 14.7 mph 16.5 mph
4th gear 22.1 mph 23.6 mph
4th gear (Lock-up clutch ON) 23.2 mph 23.6 mph
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
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
Brakes
Service brakes Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake Wet disc brake
Emergency brake Parking brake is commonly used
Service brakes Hydraulically actuated, wet disc brakes actuate on four wheels
Parking brake Wet disc brake
Emergency brake Parking brake is commonly used
Steering System
Type Articulated type, full-hydraulic power steering
Steering angle 36° each direction (40° to max end stop)
Minimum turning radius at the center of outside tire 7 050 mm
Type Articulated type, full-hydraulic power steering
Steering angle 36° each direction (40° to max end stop)
Minimum turning radius at the center of outside tire 23 ft. 2 in
Hydraulic System
Steering system:  
    Hydraulic pump Piston pump
    Capacity at rated rpm 120 L/min
    Relief valve setting 24.5 MPa / 250 kgf/cm²
    Hydraulic cylinders:  
        Type Double-acting, piston type.
        Number of cylinders 2
            Bore x stroke 100 x 486 mm
Loader control:  
    Hydraulic pump Piston pump
    Capacity at rated rpm 320 L/min
    Relief valve setting 34.3 MPa / 350 kgf/cm²
    Hydraulic cylinders:  
        Type Double-acting, piston type.
        Number of cylinders: Bore x Stroke:
            Boom cylinder / 2 160 x 898 mm
            Bucket cylinder / 1 185 x 675 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 7.2 s
        Dump 1.7 s
        Lower (Empty) 4.2 s
Steering system:  
    Hydraulic pump Piston pump
    Capacity at rated rpm 31.7 US gpm
    Relief valve setting 3,555 psi
    Hydraulic cylinders:  
        Type Double-acting, piston type.
        Number of cylinders 2
            Bore x stroke 3.9 x 19.1 in
Loader control:  
    Hydraulic pump Piston pump
    Capacity at rated rpm 84.8 US gpm
    Relief valve setting 4,980 psi
    Hydraulic cylinders:  
        Type Double-acting, piston type.
        Number of cylinders: Bore x Stroke:
            Boom cylinder / 2 6.3 x 35.4 in
            Bucket cylinder / 1 7.3 x 26.6 in
    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 s
        Dump 1.7 s
        Lower (Empty) 4.2 s
Service Refill Capacities
Cooling system 110 L
Fuel tank 473 L
Engine 37 L
Hydraulic system 337 L
Axle (each front and rear) 95 L
Torque converter and transmission 71 L
DEF tank 36 L
Cooling system 29.1 US gal
Fuel tank 124.9 US gal
Engine 9.8 US gal
Hydraulic system 89.0 US gal
Axle (each front and rear) 25.1 US gal
Torque converter and transmission 18.8 US gal
DEF tank 9.5 US gal
  • 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 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
  • 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, 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
  • 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
Support you can count on

Find what works for you