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Komatsu WA320-8 MID-SIZE WHEEL LOADERS

Komatsu WA320-8 MID-SIZE WHEEL LOADERS

BucketCapacityMax:
4.2
BucketCapacityMin:
3
Horsepower:
165 @2100 rpm
OperatingWeightMax:
34987
OperatingWeightMin:
34128
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Product Feature

Creep Mode

Creep mode limits the travel speed in 1st speed range, while still allowing for full hydraulic flow.

New Operator Seat

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. The angle of the armrest is fully adjustable for optimum operator comfort. A secondary F-N-R switch is incorporated into the standard multi-function mono lever.

Heavy-duty After Treatment System

This new system combines a Komatsu Diesel Particulate Filter (KDPF) and Selective Catalytic Reduction (SCR). The SCR NOx reduction system injects the precise amount of Diesel Exhaust Fluid (DEF) to break down NOx into non-toxic water vapor (H2O) and nitrogen gas (N2).

Hydrostatic Transmission

The HST provides quick travel response and aggressive drive into the pile. Full auto-shifting eliminates any gear shifting and kick-down operation to allow the operator to concentrate on the digging and loading. The HST also acts as a dynamic brake to slow the loader. This dramatically extends the life of the wet disc brakes.

Multi-Function Mono Lever

The multi-function mono lever with EPC control for 3rd spool is standard. It includes a forward-neutral-reverse switch for quick and easy travel. Third spool attachments can be set to continual or proportional control via the monitor panel allowing the operator to control the boom, bucket and attachment all with a single lever.

Standard Rear View Monitoring System

The dedicated full-color monitor on the right side of the cab provides the operator with a rear view from 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.

Variable Traction Control System

The variable traction control system is designed to adjust the traction control for each working condition. S-mode reduces tire spin in slippery or snowy conditions. Auto-mode automatically optimizes the tractive effort for various working conditions. Max traction provides the full, 100%, tractive effort.

Product Parameter

Drive system Four-wheel drive
Front Fixed, semi-floating
Rear Center-pin support, semi-floating, 24° total oscillation
Reduction gear Spiral bevel gear
Differential gear Torque proportioning
Final reduction gear Planetary gear, single reduction

Service brakes Hydraulically-actuated, wet disc brakes actuate on four wheels.
Parking brake Wet, multi-disc brake on transfer output shaft.
Secondary brake Parking brake is commonly used

Model Komatsu SAA6D107E-3*
Type Water-cooled, 4-cycle
Aspiration Komatsu variable geometry turbo-charged, after-cooled, cooled EGR
Number of cylinders 6
Bore x stroke 107 mm x 124 mm 4.21" x 4.88"
Piston displacement 6.69 ltr 408 in³
Governor All-speed, electronic
Horsepower:
SAE J1995 - Gross
127 kW 170 HP
ISO 9249 / SAE J1349 - Net
123 kW 165 HP
Rated rpm 2100 rpm
Max power - ISO 14396 @ 1900 rpm 126 kW 169 HP
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

Steering system:
Hydraulic pump Piston pump, in common
with loader control
Capacity (at rated rpm) 180 ltr/min 47.6 U.S. gal/min
Relief valve setting 20.6 MPa
210 kgf/cm²
3,000 psi
Hydraulic cylinders:
Type Double-acting, piston type
Number of cylinders 2
Bore x stroke 70 mm x 453 mm 2.76" x 17.8"
Loader control:
Hydraulic pump Piston pump, in common
with steering system
Capacity 180 ltr/min 47.6 U.S gal/min
Relief valve setting 30.4 MPa
310 kgf/cm2
4,410 psi
Hydraulic cylinders:
Type Double-acting, piston type
Number of cylinders bore x stroke bore x stroke
Lift cylinder - 2 120 mm x 729 mm
4.7" x 28.7"
Bucket cylinder - 1 150 mm x 558 mm 5.9" x 22"
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 6.3 sec
Dump 1.9 sec
Lower (Empty) 3.5 sec

Cooling system 35.1 ltr 9.3 U.S. gal
Fuel tank 245 ltr 64.7 U.S. gal
Engine 23 ltr 6.1 U.S. gal
Hydraulic system 92 ltr 24.3 U.S. gal
Axle front 27 ltr 7.1 U.S. gal
Axle rear 25.5 ltr 6.7 U.S. gal
Transfer case 5.8 ltr 1.5 U.S. gal
DEF tank 14 ltr 3.7 U.S. gal

Type Articulated type, fully-hydraulic power steering
Steering angle 38.5° each direction (40° to max end stop)
Minimum turning radius
at the center of outside tire
5380 mm 17'8"

Transmission
Hydrostatic, 1 pump, 2 motors with speed range select
Travel Speed: Forward Reverse
1st 1.0 - 13.0 km/h
0.6 - 8.1 mph

1.0 - 13.0 km/h
0.6 - 8.1 mph

2nd 13.0 km/h
8.1 mph
13.0 km/h
8.1 mph
3rd 18.7 km/h
11.6 mph
18.7 km/h
11.6 mph
4th 38.0 km/h
23.6 mph
38.0 km/h
23.6 mph


Measured with 20.5-R25 tires

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