Komatsu GD655-6

Configuration: Base machine, 4,267 mm (14 ft) standard moldboard, low-profile cab, 17.5R25 tires; no ripper or push plate; EPA Tier 4 Final

Dimension diagram

Spec	Value	Source
Operating weight	16,940 kg	Published: 16,940 kg Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Approximate, incl. lubricants, coolant, full fuel (37,346 lb). With rear ripper and front push plate: 18,900 kg.
Max gross (laden) weight	Not published	Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Not published; only operating weights are given.

Spec	Value	Source
Overall length	10,875 mm	Published: 10,875 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Dim. H. Marked optional (*) on the drawing, so it may include optional equipment; front tire to rear bumper (E) is 8,675 mm.
Overall width	2,630 mm	Published: 2,630 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Dim. L, width over tires. Moldboard 4,267 mm.
Overall height	3,200 mm	Published: 3,200 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Dim. A, low-profile cab.
Wheelbase	6,495 mm	Published: 6,495 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Dim. D, to centre of tandem. Tandem wheelbase (F) 1,525 mm.
Track gauge / tread	2,170 mm	Published: 2,170 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Dim. I, front tread. Rear tread (K) 2,160 mm.
Ground clearance	620 mm	Published: 620 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 At front-axle pivot.
Turning radius	7,400 mm	Published: 7,400 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Minimum (24'3").

Spec	Value	Source
Undercarriage type	Wheeled, articulated (6 x 4)	Published: Wheeled, articulated (6 x 4) Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Leaning front wheels (16°); tandem rear drive; articulation 25°.
Number of axles	3	Published: 3 Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Front axle + tandem rear.
Wheels (count)	6	Published: 6 Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25
Tire size	17.5R25	Published: 17.5R25 Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25

Spec	Value	Source
Ground pressure	Not published	Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Not published in the brochure.

Spec	Value	Source
Axle load, front (unladen/operating)	4,320 kg	Published: 4,320 kg Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Operating weight on front wheels, base machine (9,524 lb).
Axle load, rear (unladen/operating)	12,620 kg	Published: 12,620 kg Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Operating weight on rear wheels, base machine (27,822 lb).
Axle load, front (laden/max)	Not published	Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Not published in the brochure.
Axle load, rear (laden/max)	Not published	Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Not published in the brochure.

Spec	Value	Source
Engine model	Komatsu SAA6D107E-3	Published: Komatsu SAA6D107E-3 Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 EPA Tier 4 Final.
Net power	163 kW	Published: 163 kW Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Gears 7–8, 2,100 rpm, manual mode (218 HP). Gears 1–3: 134 kW; 4–6: 149 kW (P-mode).
Gross power	165 kW	Published: 165 kW Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Gears 7–8, 2,100 rpm (221 HP).
Displacement	6.69 L	Published: 6.69 L Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25
Rated speed	2,100 rpm	Published: 2,100 rpm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Gears 7–8; 2,000 rpm in gears 1–6.

Spec	Value	Source
Pump / aux flow	200 L/min	Published: 200 L/min Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Output at engine rated rpm (52.8 US gpm).
System / relief pressure	20.6 MPa	Published: 20.6 MPa Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Maximum system pressure (3,000 psi).

Spec	Value	Source
Max travel speed	44.3 km/h	Published: 44.3 km/h Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 8th gear forward (27.5 mph). Reverse 4th: 40.3 km/h.
Blade / moldboard width	4,267 mm	Published: 4,267 mm Komatsu GD655-6 brochure, EN-GD655-6BR01-0722-V8 (07/22, EV-1, EPA Tier 4 Final). Retrieved 2026-10-25 Dim. J, standard moldboard (moldboard dimensions 4,320 × 660 × 22 mm).

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