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Komatsu WA320-8

Configuration: Standard boom, general purpose bucket, pin-on, bolt-on cutting edge, 2.8 m³ heaped; 20.5-R25 L3 tires, ROPS/FOPS cab; EPA Tier 4 Final

25 sourced values · Sources: Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25

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Dimension diagram

A B C D E F Side viewFront view Schematic, not to scale
AOverall length7,690 mm
BOverall height3,200 mm
CWheelbase3,030 mm
DGround clearance425 mm
EOverall width2,740 mm
FTrack gauge / tread2,050 mm

Weights

SpecValueSource
Operating weight15,480 kg
Published: 15,480 kg
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
GP pin-on BOCE bucket (34,128 lb).

Dimensions

SpecValueSource
Overall length7,690 mm
Published: 7,690 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Dim. M, bucket on ground (25'3").
Overall width2,740 mm
Published: 2,740 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Bucket width (9'0"). Width over tires 2,590 mm.
Overall height3,200 mm
Published: 3,200 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Dim. G, top of ROPS cab (10'6"). Top of stack (F) 3,040 mm.
Wheelbase3,030 mm
Published: 3,030 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Dim. A (9'11").
Track gauge / tread2,050 mm
Published: 2,050 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Tread (6'9").
Ground clearance425 mm
Published: 425 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Dim. D (1'5").
Turning radius5,380 mm
Published: 5,380 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Minimum, at centre of outside tire (17'7").

Undercarriage / tires

SpecValueSource
Undercarriage typeWheeled, articulated
Published: Wheeled, articulated
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Steering angle 38.5° each direction.
Number of axles2
Published: 2
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Wheels (count)4
Published: 4
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Four-wheel drive.
Tire size20.5-R25 L3
Published: 20.5-R25 L3
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25

Ground pressure

SpecValueSource
Ground pressureNot publishedKomatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Not published in the brochure.

Axle loads

SpecValueSource
Axle load, front (unladen/operating)Not publishedKomatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Not published in the brochure.
Axle load, rear (unladen/operating)Not publishedKomatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Not published in the brochure.

Engine

SpecValueSource
Engine modelKomatsu SAA6D107E-3
Published: Komatsu SAA6D107E-3
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
EPA Tier 4 Final.
Net power123 kW
Published: 123 kW
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
ISO 9249 / SAE J1349 (165 HP). Max power ISO 14396 126 kW @ 1,900 rpm.
Gross power127 kW
Published: 127 kW
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
SAE J1995 (170 HP).
Displacement6.69 L
Published: 6.69 L
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Rated speed1,850 rpm
Published: 1,850 rpm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25

Hydraulics

SpecValueSource
Pump / aux flow180 L/min
Published: 180 L/min
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Hydraulic pump, shared with steering system, at rated rpm (47.6 gpm).
System / relief pressure20.6 MPa
Published: 20.6 MPa
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Loader circuit (3,000 psi). Steering 20.7 MPa.

Performance

SpecValueSource
Max travel speed38 km/h
Published: 38 km/h
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
4th, forward and reverse, 20.5-R25 tires (hydrostatic).
Bucket capacity2.8 m³
Published: 2.8 m³
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Heaped (3.7 yd³). Struck 2.4 m³.
Tipping load9,780 kg
Published: 9,780 kg
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Static, 40° full turn. Straight: 11,500 kg.
Breakout / digging force162 kN
Published: 162 kN
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
16,470 kgf.
Dump height / clearance2,880 mm
Published: 2,880 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Dim. H, dump clearance at max height, 45° dump (9'5"); reach 1,000 mm.
Lift / hinge-pin height4,005 mm
Published: 4,005 mm
Komatsu WA320-8 brochure, EN-WA320-8-BR0-1223-V5 (© 2023, EPA Tier 4 Final); US brochure, imperial primary with metric printed. Retrieved 2026-10-25
Dim. B, hinge-pin height at max height, standard boom. High-lift boom: 4,545 mm.

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