New features in GD655-7 deliver better ergonomics to lessen operator fatigue, boost productivity.

If asked to describe the ease of use with typical motor graders, most operators would steer clear of calling it a low-effort task. However, today's updated models provide a host of features designed to significantly reduce operator fatigue and increase productivity.

"The GD655-7 provides an all-new, ultra-ergonomic working environment and a spacious cab for added comfort during long work days," said Komatsu Senior Product Manager Bruce Boebel. "Operators will appreciate the low-effort operation and steering levers, new transmission controls as well as the articulation stop-at-center feature that simplifies use."

The new motor grader is equipped with a Tier 4 Final-certified emissions-regulations-compliant engine. SMS Equipment customers who are using the GD655 say it is a great solution for snow removal as well as gravel road maintenance tasks in rural areas.

SMS Equipment supports the new graders through Komatsu CARE, which provides scheduled maintenance for the first 2,000 hour or three years. This includes a 50-point inspection at each service and two complimentary Komatsu diesel particulate filter exchanges in the first five years. Trained SMS Equipment technicians perform the services at the customer's convenience to eliminate costly downtime.

New performance features include a transmission shift lever with a finger-operated forward-neutral-reverse switch that reduces required hand movement. That's in addition to the standard Komatsu power-shift transmission that was designed and built for Komatsu graders and delivers on-the-go, full-power shifting.

Greater speed, less fuel

The GD655-7 offers inching capability and automatic shifting in higher ranges. An industry- exclusive, dual-mode transmission with eight forward and four reverse speeds, facilitates higher travel speeds and reduces fuel consumption of a direct drive. It also delivers increased tractive effort and the control of a torque converter.

"It is grade-control ready, with no aftermarket valve required," Boebel noted. "Additionally, the GD655-7 has two standard five-section hydraulic control valves that allow the addition of attachments and are strategically located to improve forward visibility."

New cab enhancements include a slightly smaller but "right-sized" steering wheel that provides more visibility and room and is convenient for long "blade-up and roading" trips. A steering lever allows operators to keep hands on the low-effort equipment levers and make small steering adjustments while at work, without the need to turn the steering wheel. Highly adjustable armrests and consoles have power raise and lower functions and mechanical fore/aft adjustments to precisely fit user preferences.

"Operators can select Power or Economy mode to match conditions and optimize fuel savings," said Boebel. "This is a highly productive machine, and a solid choice for anyone who uses a motor grader for construction, road building, snow clearing or other applications."

Boebel points out that the new GD655-7 is among the leaders in the 20-ton range, and it will be sold concurrently with the dash-6 model, so customers have an additional choice to meet their needs.

Quick Specs on Komatsu’s GD655-7 Motor Grader:


Net Horsepower
218 hp

Operating Weight
41,667 lb

Blade Length
14 ft