Machine models

Komatsu GD530A-2C to GD670AW-2C specifications

Entries in this reference
Listing-entry count
6

Short answer

Komatsu GD530A-2C to GD670AW-2C: motor graders.

Selected configuration figures
Configuration	Documented field and quantity
GD530A-2C	Net Power Gear 5-6 143.5 hp Std Operation Weight - Total 30,248 lb
GD530AW-2C	Net Power Gear 5-6 143.5 hp Std Operation Weight - Total 30,556 lb
GD650A-2C	Net Power Gear 5-6 166.3 hp Std Operation Weight - Total 32,805 lb
GD650AW-2C	Net Power Gear 5-6 166.3 hp Std Operation Weight - Total 33,091 lb
GD670A-2C	Net Power Gear 5-6 203.9 hp Std Operation Weight - Total 34,282 lb
GD670AW-2C	Net Power Gear 5-6 203.9 hp Std Operation Weight - Total 34,569 lb

GD530A-2C to GD670AW-2C specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Komatsu	GD530A-2C to GD670AW-2C	6	GD530A-2C, GD530AW-2C, GD650A-2C, GD650AW-2C, GD670A-2C, and GD670AW-2C

Dimensions and weight
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Overall Length	27.67 ft	27.67 ft	27.71 ft	27.71 ft	27.71 ft	27.71 ft
Width Over Tires	7.92 ft	7.92 ft	8.02 ft	8.02 ft	8.02 ft	8.02 ft
Wheelbase	19.42 ft	19.42 ft	19.42 ft	19.42 ft	19.42 ft	19.42 ft
Rear Ground Clearance	0.92 ft	0.92 ft	0.92 ft	0.92 ft	0.92 ft	0.92 ft
Tandem Axle Wheelbase	5.09 ft	5.09 ft	5.09 ft	5.09 ft	5.09 ft	5.09 ft
Blade Base	8.17 ft	8.17 ft	8.17 ft	8.17 ft	8.17 ft	8.17 ft
Height To Top Of Isomount Cab	10.17 ft	10.17 ft	10.17 ft	10.17 ft	10.17 ft	10.17 ft

Engine
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Number Of Cylinders	6	6	6	6	6	6
Engine Model	S6D102	S6D102	S6D114E	S6D114E	S6D114E	S6D114E
Power Measured @	2,500 rpm	2,500 rpm	2,500 rpm	2,500 rpm	2,500 rpm	2,500 rpm
Net Power Gear 5-6	143.5 hp	143.5 hp	166.3 hp	166.3 hp	203.9 hp	203.9 hp
Max Power	143.5 hp	143.5 hp	166.3 hp	166.3 hp	203.9 hp	203.9 hp
Displacement	358.9 cu in	358.9 cu in	504.7 cu in	504.7 cu in	504.7 cu in	504.7 cu in

Operational
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Std Operation Weight - Total	30,248 lb	30,556 lb	32,805 lb	33,091 lb	34,282 lb	34,569 lb
Fuel Capacity	89.9 gal	89.9 gal	89.9 gal	89.9 gal	89.9 gal	89.9 gal
Tire Size	13.00-24-10PR	13.00-24-10PR	14.00-24-10PR	14.00-24-10PR	14.00-24-10PR	14.00-24-10PR

Steering
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD670A-2C
Articulation Angle	20 degrees	20 degrees	20 degrees	20 degrees

Transmission and speeds
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Number Of Gears - Forward	6	6	6	6	6	6
Max Speed - Forward	25.5 mph	25.5 mph	26.1 mph	26.1 mph	26.2 mph	26.2 mph
Max Speed - Reverse	13.7 mph	13.7 mph	14.5 mph	14.5 mph	14.7 mph	14.7 mph

Front Axle
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Ground Clearance	1 ft	1 ft	1 ft	1 ft	1 ft	1 ft

Moldboard
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Moldboard Width	12.1 ft	12.1 ft	12.1 ft	12.1 ft	12.1 ft	12.1 ft
Moldboard Height	26 in	26 in	26 in	26 in	28 in	28 in

Variants — Source comparison annotation
Source guide	Differing-field count reported
GD530A-2C to GD670AW-2C	12

Ratios
Figure	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Engine horsepower per 1,000 lb of weight	4.7	4.7	5.1	5.0	5.9	5.9
Fuel tank per engine horsepower	0.63 gal	0.63 gal	0.54 gal	0.54 gal	0.44 gal	0.44 gal

Reference directory classification
Equipment group	motor grader

GD530A-2C to GD670AW-2C: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	motor grader	Komatsu and the GD670, GD670AW line that the GD530A-2C, GD670A-2C, GD670AW-2C 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	5

Komatsu Gd670 Transmission (Heavy Equipment Forums, 2024-07-03)
Komatsu Gd670 Aw (Heavy Equipment Forums, 2022-12-29)
Komatsu Galion Gd670 Circle Pinion Gear (Heavy Equipment Forums, 2021-08-06)
Komatsu Gd530a 2c (Heavy Equipment Forums, 2021-04-20)

GD530A-2C to GD670AW-2C: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-24	MachineryTrader (machinerytrader.com)	motor grader	GD530A-2C, GD530AW-2C, GD650A-2C	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-24	U.S. Consumer Product Safety Commission	Komatsu; GD530A-2C, GD530AW-2C, GD650A-2C	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Komatsu GD530A-2C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu GD530AW-2C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu GD650A-2C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu GD650AW-2C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu GD670A-2C — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Komatsu GD670AW-2C — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Komatsu GD530A-2C to GD670AW-2C — Heavy Equipment Forums. 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.

Recorded observations — Forum-title snapshot
Observation field	Recorded value
Title count	5
Forum indexes	Heavy Equipment Forums
Search wording	the GD530A-2C to GD670AW-2C motor grader
Latest title quoted by the reference	Komatsu Gd670 Transmission

Komatsu GD530A-2C to GD670AW-2C: Configuration records

GD530A-2C

Specification	Source figure
Dimensions and weight
Overall Length	27.67 ft
Width Over Tires	7.92 ft
Wheelbase	19.42 ft
Rear Ground Clearance	0.92 ft
Tandem Axle Wheelbase	5.09 ft
Blade Base	8.17 ft
Height To Top Of Isomount Cab	10.17 ft
Engine
Number Of Cylinders	6
Engine Model	S6D102
Power Measured @	2,500 rpm
Net Power Gear 5-6	143.5 hp
Max Power	143.5 hp
Displacement	358.9 cu in
Operational
Std Operation Weight - Total	30,248 lb
Fuel Capacity	89.9 gal
Tire Size	13.00-24-10PR
Steering
Articulation Angle	20 degrees
Transmission and speeds
Number Of Gears - Forward	6
Max Speed - Forward	25.5 mph
Max Speed - Reverse	13.7 mph
Front Axle
Ground Clearance	1 ft
Moldboard
Moldboard Width	12.1 ft
Moldboard Height	26 in

Source

GD530AW-2C

Specification	Source figure
Dimensions and weight
Overall Length	27.67 ft
Width Over Tires	7.92 ft
Wheelbase	19.42 ft
Rear Ground Clearance	0.92 ft
Tandem Axle Wheelbase	5.09 ft
Blade Base	8.17 ft
Height To Top Of Isomount Cab	10.17 ft
Engine
Number Of Cylinders	6
Engine Model	S6D102
Power Measured @	2,500 rpm
Net Power Gear 5-6	143.5 hp
Max Power	143.5 hp
Displacement	358.9 cu in
Operational
Std Operation Weight - Total	30,556 lb
Fuel Capacity	89.9 gal
Tire Size	13.00-24-10PR
Steering
Articulation Angle	20 degrees
Transmission and speeds
Number Of Gears - Forward	6
Max Speed - Forward	25.5 mph
Max Speed - Reverse	13.7 mph
Front Axle
Ground Clearance	1 ft
Moldboard
Moldboard Width	12.1 ft
Moldboard Height	26 in

Source

GD650A-2C

Specification	Source figure
Dimensions and weight
Overall Length	27.71 ft
Width Over Tires	8.02 ft
Wheelbase	19.42 ft
Rear Ground Clearance	0.92 ft
Tandem Axle Wheelbase	5.09 ft
Blade Base	8.17 ft
Height To Top Of Isomount Cab	10.17 ft
Engine
Number Of Cylinders	6
Engine Model	S6D114E
Power Measured @	2,500 rpm
Net Power Gear 5-6	166.3 hp
Max Power	166.3 hp
Displacement	504.7 cu in
Operational
Std Operation Weight - Total	32,805 lb
Fuel Capacity	89.9 gal
Tire Size	14.00-24-10PR
Steering
Articulation Angle	20 degrees
Transmission and speeds
Number Of Gears - Forward	6
Max Speed - Forward	26.1 mph
Max Speed - Reverse	14.5 mph
Front Axle
Ground Clearance	1 ft
Moldboard
Moldboard Width	12.1 ft
Moldboard Height	26 in

Source

GD650AW-2C

Specification	Source figure
Dimensions and weight
Overall Length	27.71 ft
Width Over Tires	8.02 ft
Wheelbase	19.42 ft
Rear Ground Clearance	0.92 ft
Tandem Axle Wheelbase	5.09 ft
Blade Base	8.17 ft
Height To Top Of Isomount Cab	10.17 ft
Engine
Number Of Cylinders	6
Engine Model	S6D114E
Power Measured @	2,500 rpm
Net Power Gear 5-6	166.3 hp
Max Power	166.3 hp
Displacement	504.7 cu in
Operational
Std Operation Weight - Total	33,091 lb
Fuel Capacity	89.9 gal
Tire Size	14.00-24-10PR
Transmission and speeds
Number Of Gears - Forward	6
Max Speed - Forward	26.1 mph
Max Speed - Reverse	14.5 mph
Front Axle
Ground Clearance	1 ft
Moldboard
Moldboard Width	12.1 ft
Moldboard Height	26 in

Source

GD670A-2C

Specification	Source figure
Dimensions and weight
Overall Length	27.71 ft
Width Over Tires	8.02 ft
Wheelbase	19.42 ft
Rear Ground Clearance	0.92 ft
Tandem Axle Wheelbase	5.09 ft
Blade Base	8.17 ft
Height To Top Of Isomount Cab	10.17 ft
Engine
Number Of Cylinders	6
Engine Model	S6D114E
Power Measured @	2,500 rpm
Net Power Gear 5-6	203.9 hp
Max Power	203.9 hp
Displacement	504.7 cu in
Operational
Std Operation Weight - Total	34,282 lb
Fuel Capacity	89.9 gal
Tire Size	14.00-24-10PR
Steering
Articulation Angle	20 degrees
Transmission and speeds
Number Of Gears - Forward	6
Max Speed - Forward	26.2 mph
Max Speed - Reverse	14.7 mph
Front Axle
Ground Clearance	1 ft
Moldboard
Moldboard Width	12.1 ft
Moldboard Height	28 in

Source

GD670AW-2C

Specification	Source figure
Dimensions and weight
Overall Length	27.71 ft
Width Over Tires	8.02 ft
Wheelbase	19.42 ft
Rear Ground Clearance	0.92 ft
Tandem Axle Wheelbase	5.09 ft
Blade Base	8.17 ft
Height To Top Of Isomount Cab	10.17 ft
Engine
Number Of Cylinders	6
Engine Model	S6D114E
Power Measured @	2,500 rpm
Net Power Gear 5-6	203.9 hp
Max Power	203.9 hp
Displacement	504.7 cu in
Operational
Std Operation Weight - Total	34,569 lb
Fuel Capacity	89.9 gal
Tire Size	14.00-24-10PR
Transmission and speeds
Number Of Gears - Forward	6
Max Speed - Forward	26.2 mph
Max Speed - Reverse	14.7 mph
Front Axle
Ground Clearance	1 ft
Moldboard
Moldboard Width	12.1 ft
Moldboard Height	28 in

Source

Compare Komatsu GD530A-2C, GD530AW-2C, GD650A-2C, GD650AW-2C, GD670A-2C, GD670AW-2C

Dimensions and weight
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Overall Length	27.67 ft	27.67 ft	27.71 ft	27.71 ft	27.71 ft	27.71 ft
Width Over Tires	7.92 ft	7.92 ft	8.02 ft	8.02 ft	8.02 ft	8.02 ft
Wheelbase	19.42 ft	19.42 ft	19.42 ft	19.42 ft	19.42 ft	19.42 ft
Rear Ground Clearance	0.92 ft	0.92 ft	0.92 ft	0.92 ft	0.92 ft	0.92 ft
Tandem Axle Wheelbase	5.09 ft	5.09 ft	5.09 ft	5.09 ft	5.09 ft	5.09 ft
Blade Base	8.17 ft	8.17 ft	8.17 ft	8.17 ft	8.17 ft	8.17 ft
Height To Top Of Isomount Cab	10.17 ft	10.17 ft	10.17 ft	10.17 ft	10.17 ft	10.17 ft

Engine
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Number Of Cylinders	6	6	6	6	6	6
Engine Model	S6D102	S6D102	S6D114E	S6D114E	S6D114E	S6D114E
Power Measured @	2,500 rpm	2,500 rpm	2,500 rpm	2,500 rpm	2,500 rpm	2,500 rpm
Net Power Gear 5-6	143.5 hp	143.5 hp	166.3 hp	166.3 hp	203.9 hp	203.9 hp
Max Power	143.5 hp	143.5 hp	166.3 hp	166.3 hp	203.9 hp	203.9 hp
Displacement	358.9 cu in	358.9 cu in	504.7 cu in	504.7 cu in	504.7 cu in	504.7 cu in

Operational
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Std Operation Weight - Total	30,248 lb	30,556 lb	32,805 lb	33,091 lb	34,282 lb	34,569 lb
Fuel Capacity	89.9 gal	89.9 gal	89.9 gal	89.9 gal	89.9 gal	89.9 gal
Tire Size	13.00-24-10PR	13.00-24-10PR	14.00-24-10PR	14.00-24-10PR	14.00-24-10PR	14.00-24-10PR

Transmission and speeds
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Number Of Gears - Forward	6	6	6	6	6	6
Max Speed - Forward	25.5 mph	25.5 mph	26.1 mph	26.1 mph	26.2 mph	26.2 mph
Max Speed - Reverse	13.7 mph	13.7 mph	14.5 mph	14.5 mph	14.7 mph	14.7 mph

Front Axle
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Ground Clearance	1 ft	1 ft	1 ft	1 ft	1 ft	1 ft

Moldboard
Specification	GD530A-2C	GD530AW-2C	GD650A-2C	GD650AW-2C	GD670A-2C	GD670AW-2C
Moldboard Width	12.1 ft	12.1 ft	12.1 ft	12.1 ft	12.1 ft	12.1 ft
Moldboard Height	26 in	26 in	26 in	26 in	28 in	28 in

More in Komatsu: GD600R-2–GD655R-2, GD31RC-3A/GD405A-1, GD555-3–GD675-5.

Komatsu GD530A-2C to GD670AW-2C specifications

Sources for this page

Komatsu GD530A-2C to GD670AW-2C: Configuration records