Machine models

Komatsu GD705A-4 specifications

Entries in this reference
Listing-entry count
1

Short answer

Komatsu GD705A-4: motor grader.

Selected configuration figures
Configuration	Documented field and quantity
GD705A-4	Max Power 199.9 hp Std Operation Weight - Total 38,846 lb

GD705A-4 specification matrix — Dimensions and weight
Specification	GD705A-4
Overall Length	30.42 ft
Width Over Tires	9.19 ft
Wheelbase	21.17 ft
Rear Ground Clearance	1.35 ft
Tandem Axle Wheelbase	5.68 ft
Blade Base	9.52 ft
Height To Top Of Isomount Cab	11.68 ft

Engine
Specification	GD705A-4
Number Of Cylinders	6
Engine Model	S6D125
Power Measured @	2,000 rpm
Max Power	199.9 hp
Net Power Gears 7-8	199.9 hp
Displacement	674.4 cu in

Operational
Specification	GD705A-4
Std Operation Weight - Total	38,846 lb
Fuel Capacity	105.7 gal
Tire Size	16.00-24-12PR

Steering
Specification	GD705A-4
Articulation Angle	26 degrees
Turning Radius	24.7 ft

Transmission and speeds
Specification	GD705A-4
Number Of Gears - Forward	8
Max Speed - Forward	26.8 mph
Max Speed - Reverse	28.6 mph

Front Axle
Specification	GD705A-4
Ground Clearance	1.4 ft

Moldboard
Specification	GD705A-4
Moldboard Width	14.2 ft
Moldboard Height	27.6 in

Ratios
Figure	GD705A-4
Engine horsepower per 1,000 lb of weight	5.1
Fuel tank per engine horsepower	0.53 gal

Reference directory classification
Equipment group	motor grader

Where the GD705A-4 ranks in Komatsu's list — Scope of the captured comparison
Brand	Equipment group	Compared entry	Sort order
Komatsu	motor grader	GD705A-4	Descending quantity; 1 is largest

Figure	GD705A-4	Rank	Lowest in line	Highest in line
Engine power	199.9 hp	2 of 10	65.0 hp	280.0 hp
Listed weight	38,846 lb	3 of 10	11,244 lb	58,092 lb
Fuel capacity	105.7 gal	2 of 5	34.4 gal	132.1 gal
Horsepower per 1,000 lb	5.1 hp	6 of 10	4.7 hp	5.8 hp
Moldboard width	14.2 ft	2 (tied) of 10	7.3 ft	16.2 ft

The GD705A-4 beside its neighbours
Base version	GD705R-2	GD705A-4	GD825A-2
Engine power	180 hp	199.9 hp	280 hp
Weight	38,581 lb	38,846 lb	58,092 lb
Fuel capacity	GD705A-4: 105.7 gal; GD825A-2: 132.1 gal
Wheelbase	20.18 ft	21.17 ft	23.4 ft
Moldboard width	14.2 ft	14.2 ft	16.2 ft

GD705A-4: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	motor grader	Komatsu and the GD705 line that the GD705A-4 belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead	1

Komatsu Gd705 5 Crank No Start (Heavy Equipment Forums, 2023-08-16)

Used market for the GD705A-4 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Komatsu motor grader	1

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
GD705A-4	1	2013	None shown	None shown	None shown	None shown

GD705A-4: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu together with the motor grader GD705A-4	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu GD705A-4 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu GD705A-4 — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Komatsu GD705A-4 — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Komatsu — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

Komatsu GD705A-4 questions

Dated listing search without advertised prices
Date	Listing index	Equipment class	Names queried	Listings	Price observation
2026-09-24	MachineryTrader	motor grader	GD705A-4	1	No prices shown in this snapshot

Komatsu GD705A-4: Configuration records

GD705A-4

Specification	Source figure
Dimensions and weight
Overall Length	30.42 ft
Width Over Tires	9.19 ft
Wheelbase	21.17 ft
Rear Ground Clearance	1.35 ft
Tandem Axle Wheelbase	5.68 ft
Blade Base	9.52 ft
Height To Top Of Isomount Cab	11.68 ft
Engine
Engine Model	S6D125
Max Power	199.9 hp
Displacement	674.4 cu in
Number Of Cylinders	6
Power Measured @	2,000 rpm
Net Power Gears 7-8	199.9 hp
Front Axle
Ground Clearance	1.4 ft
Moldboard
Moldboard Width	14.2 ft
Moldboard Height	27.6 in
Operational
Std Operation Weight - Total	38,846 lb
Tire Size	16.00-24-12PR
Fuel Capacity	105.7 gal
Steering
Turning Radius	24.7 ft
Transmission and speeds
Number Of Gears - Forward	8
Max Speed - Forward	26.8 mph
Max Speed - Reverse	28.6 mph
Additional specifications
Articulation Angle	26 degrees

More in Komatsu: GD825A-2, GD705R-2, GD200A-1/GD300A-1.