Heavy Equipment Guide Logo
Komatsu America Corp. - D155AX-7 Crawler Dozers

The D155AX-7 is a dozer that bridges the gap between contractor site prep dozers and large contractor production/mining dozers. The Tier 4 interim D155AX-7 has the precise and responsive hydraulic control and smooth turning of hydrostatic steering of smaller dozers for grading and big dozer features like a lock-up torque converter, Unique, high production Sigma dozer blade and K-bogie oscillating undercarriage.

Features & Benefits

SIGMADOZER The Next Generation Blade

Based on a completely new digging theory, SIGMADOZER dramatically improves dozing performance and increases productivity.

Automatic Transmission with Lockup Torque Converter

A significant reduction in fuel consumption and greater power train efficiency are achieved by the new automatic transmission and lockup torque converter.

Rear View Monitoring System

On the large LCD color monitor, the operator can view, through one camera, areas directly behind the machine. This camera can be synchronized with reverse operation.

Palm Command Control System (PCCS) Travel Joystick

Palm command travel joystick provides the operator with a relaxed posture and superb fine control. Transmission shifting is simplified with thumb push buttons.

Automatic/Manual Shift Selectable Mode

Automatic or manual shift modes can be selected with ease to suit the work at hand by simply pressing the switch on the multi-monitor (selection at neutral).

Hydrostatic Steering System (HSS)—Smooth, Powerful Turning

The engine power is transmitted to both tracks without power interruption on the inside track for smooth, powerful turns. Counter-rotation is available in neutral for minimum turning radius, enhancing maneuverability.


Key specifications
Horsepower 354 @1950 rpm
Operating weight 87,100 lbs
Blade capacity 12.3 - 15.6 yd³

Company Info

8770 W Bryn Mawr Ave., Suite 100
Chicago, IL
US, 60631


Read more

Related Products