Komatsu’s D175AX-10, a completely redesigned production dozer engineered to help move more material, improve efficiency and reduce total cost of ownership, has arrived in North America.
Equipped with a new 450-hp Komatsu DBA127 engine, redesigned powertrain and blade, and a hydrostatic steering system, the D175AX-10 brings together performance, control and durability for demanding applications such as mining, aggregate production and large-scale site development.
The D175AX-10 delivers up to 25 per cent greater productivity and up to 15 per cent improved fuel efficiency in slot dozing compared to the previous D155AX-8. Its comprehensive redesign extends across the engine, transmission, steering system, blade, undercarriage and operator environment, with the goal of helping crews sustain production while managing operating costs.
“This large-class machine builds on the proven foundation of the D155AX-8 with a complete redesign,” said Robert Hussey, Product Manager for Komatsu.
“From a new 450-hp engine and four-speed automatic transmission to an all-new steering system and redesigned semi-U blade, nearly every major system has been reengineered to help move more material with greater control. The result is a new generation of dozer engineered to deliver in four key areas: performance and productivity, ride comfort, operator features and lower total cost of ownership.”
DBA127 engine
The D175AX-10 is powered by Komatsu’s 12.7-litre, 450-hp DBA127 Tier 4 Final engine.
Developed with a streamlined EGR-less layout and improved critical components, the engine is paired with a new four-speed automatic transmission with a lock-up clutch and 30 speed settings.
Together, the powertrain and selectable operating modes balance pushing performance and fuel efficiency as conditions change. Automatic Shift Mode can help reduce fuel consumption by up to 5 per cent compared to manual operation.
Key features of the D175AX-10 include:
- 27 per cent more horsepower than the previous model.
- Hydrostatic steering with up to 17 per cent greater steering force and up to 7 per cent more power while turning.
- 10.6-cubic-metre semi-U blade with high-efficiency end bits for reduced digging resistance and improved material retention.
- Standard KomVision 360-degree camera system and cab with up to 45 per cent better forward visibility and 30 per cent better rear visibility than the D155AX-8.
- Redesigned undercarriage and cab isolation that can reduce vibration by up to 35 per cent.
The DBA127 engine has been introduced in other recent major Komatsu product launches, including the HM460-6 articulated haul truck and the WA475-11 and WA485-11 wheel loaders.
Hydrostatic steering
The new hydrostatic steering system is designed to help operators maintain blade load and pushing performance while manoeuvring.
An independent steering pump helps balance power between steering and work equipment, while pivot, power and spin turn modes provide options for confined work areas and conditions.
Combined with track shoe slip control and multistage speed settings, these features help operators manage traction and machine response during production dozing, ripping and other demanding tasks.
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Blade design also plays a central role in the dozer’s production capability. The 10.6-cubic-metre semi-U blade is shaped to reduce digging resistance while improving filling and material retention, helping operators carry material efficiently through each push.
The D175AX-10 is engineered to deliver up to 18 per cent greater average drawbar pull compared to the D155AX-8, supporting performance in heavy-load applications.
Updated undercarriage
Undercarriage updates for the D175AX-10 include a redesigned eight-track-roller system that allows more track on the ground, front oscillating idlers that help maintain constant track-on-ground contact over uneven terrain and an increased minor bogie oscillation angle that helps reduce vibration and operator fatigue.
Redesigned cab
The redesigned operator environment supports comfort, visibility and confident machine control throughout long shifts.
The cab also features a 20-cm touchscreen monitor, intuitive Palm Command Control System levers and a standard KomVision 360-degree camera system with a 25-cm display.
Minimized maintenance
The new dozer features ground-level service points, a side-by-side cooling package and maintenance improvements designed to help reduce downtime and maintenance costs by up to 28 per cent over the life of the machine, thanks to the EGR-less DBA127 engine and compatibility with ultra-low-ash (ULA) oil.
Hydraulic oil and filter service intervals increase from 2,000 to 6,000 hours, while engine oil and key filter intervals increase from 500 to 1,000 hours.
KDPF cleaning intervals are extended to up to 8,000 hours.
The redesigned blade linkage and strengthened structures are also intended to support longer component life in demanding applications.
