Categories ↠ Motor Graders ↠ Komatsu GD623A-1

Komatsu GD623A-1 Motor Grader

Category: Motor Graders ➔
Manufacturer: Komatsu ➔
Model: GD623A-1 ➔

The Komatsu GD623A-1 Motor Grader boasts a powerful 155.6 hp engine with a displacement of 674.4 cu in, offering exceptional performance for grading tasks. With an impressive blade base of 8.6 ft and a moldboard width of 12.2 ft, this grader excels in producing precise and smooth finishes. Its ergonomic design includes a comfortable Isomount Cab standing at 11.5 ft, ensuring operator efficiency and safety. Equipped with a range of operating features such as a fuel capacity of 75.3 gal and a total weight of 27998.8 lbs, the GD623A-1 is a reliable and efficient choice for grading operations.

See all Komatsu GD623A-1s for sale

Dimensions

Blade Base	8.60 ft (2.62 m)
Height to Top of Isomount Cab	11.50 ft (3.51 m)
Overall Length	27.90 ft (8.50 m)
Rear Ground Clearance	1.20 ft (0.37 m)
Tandem Axle Wheelbase	5.10 ft (1.55 m)
Wheelbase	19.70 ft (6.00 m)
Width Over Tires	7.90 ft (2.41 m)

Engine

Displacement	674.40 cu in (11,051.46 cu cm)
Engine Model	6D125
Max Power	155.60 hp (116.03 kw)
Net Power Gear 5-6	155.60 hp (116.03 kw)
Number of Cylinders	6
Power Measured @	2200 rpm

Front Axle

Ground Clearance

1.20 ft (0.37 m)

Moldboard

Moldboard Height	25.40 in (64.52 cm)
Moldboard Width	12.20 ft (3.72 m)

Operating Specifications

Fuel Capacity	75.30 gal (285.01 l)
Std Operation Weight - Total	27,998.80 lbs (12,700.06 kg)
Tire Size	13.00-24-10PR

Steering System

Articulation Angle	26 degrees
Turning Radius	22.70 ft (6.92 m)

Transmission

Max Speed - Forward	28.90 mph (46.51 kph)
Max Speed - Reverse	35.30 mph (56.81 kph)
Number of Gears - Forward	6

Our Main Office

Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200

About Us

Construction Equipment Guide covers the nation with its four regional newspapers, offering construction and industry news and information along with new and used construction equipment for sale from dealers in your area. Now we extend those services and information to the internet. Making it as easy as possible to find the news and equipment that you need and want.

Contents Copyrighted 2026, by Construction Equipment Guide, which is a Registered Trademark, registered in the U.S. Patent Office. Registration number 0957323. All rights reserved, nothing may be reprinted or reproduced (including framing) in whole or part without written permission from the publisher. All editorial material, photographs, drawings, letters, and other material will be treated as unconditionally assigned for publication and copyright purposes and are subject to Construction Equipment Guide’s unrestricted right to edit and comment editorially. Contributor articles do not necessarily reflect the policy or opinions of this publication.

Read our privacy policy here.
Mastodon