Komatsu D175AX-10: A First Look at the Company's Next-Generation Production Dozer

Key takeaways

• It’s not a refresh — it’s a redesign. The D175AX-10 replaces the D155AX-8 with an all-new engine, cab, frame, steering system, blade, cooling package, and undercarriage.
• More power and productivity. Komatsu says the new dozer delivers 26 percent more horsepower, moves 25 percent more material per hour, and improves fuel efficiency by 15 percent.
• Operators get a major upgrade. A redesigned cab, new touchscreen monitor, KomVision 360-degree cameras, and three steering modes aim to improve visibility, comfort, and maneuverability.

Big dozers have a certain swagger. They roll onto jobsites — steel tracks clanking loudly — and everyone stops to look. The new Komatsu D175AX-10 is this sort of attention-grabber. Its massive blade and imposing stance make it look ready to move mountains. We saw it up close recently when we got an exclusive walkaround of the D175AX-10 with product manager Robert Hussey. The machine made its North American debut at Conexpo 2026, and Hussey spent nearly five minutes explaining what makes this next-generation dozer different.

As Hussey says in the video above: “Now when you think of this bulldozer, I want you to think of one thing — all new.”

The D175AX-10 replaces the D155AX-8, but this is not a refresh. Komatsu redesigned the powertrain, cab, blade, frame, steering system, cooling package, and undercarriage. This dozer also packs more power, tighter turning, and better fuel efficiency into a high-production earthmoving machine. Along with this 175AX-10 large production dozer, Komatsu also announced the D61PXi-25 dozer with intelligent machine control (IMC 3.0). The company has dozers on the brain at the moment, so let’s detail this new one, which will hopefully debut later this year.  

An all-new dozer from the ground up

The D175AX-10 is the first machine in Komatsu’s next-generation -10 large production dozer lineup. It borrows structural elements from larger mining-class machines, including frame concepts used on the D375 surface mining dozer. The D175AX-10 introduces a new main frame, new track frames, a new powertrain, a new cab, and a new blade system. Komatsu also bumped the model designation from 155 to 175, reflecting the machine’s beefier architecture and mining-inspired design.

Under the hood sits Komatsu’s new DBA127 EGR-less engine, rated at 450 horsepower. The engine pairs with a four-speed automatic transmission. Historically, Komatsu has used a three-speed setup. Hussey says the additional gear helps operators better match machine speed to specific applications. Compared to the D155AX-8, Komatsu says the D175AX-10 delivers:

• 26 percent more horsepower, with 450 horsepower (336 kW)
• 25 percent increase in cubic yards of material moved per hour
• 15 percent enhancement in fuel efficiency (measured in cubic yards moved per gallon of fuel consumed)
• 35 percent tighter turning radius

The D175AX-10’s new steering system

Control has increased. The D175AX-10 introduces three turning modes that give operators more flexibility in tight spaces and demanding push applications. First is a traditional pivot turn. One track slows while the other continues moving. That’s familiar for experienced dozer operators. Second is a power turn. The machine speeds one track up while maintaining blade load. Operators can redirect material without sacrificing momentum. Third is the new spin turn mode. In spin turn, one track rotates forward while the other rotates backward. The dozer pivots in place, allowing operators to quickly reverse direction or maneuver in confined spaces. For a machine this size, that is pretty cool.

The cab experience and KomVision

Visibility is another major upgrade. The D175AX-10 comes equipped with the KomVision 360-degree visibility system. Cameras mounted around the machine provide views of the blade, ripper, and both sides of the dozer. Operators can view individual cameras or stitch the feeds together into a bird’s-eye view. The camera system pairs with the new touchscreen monitor, which replaces the old button-heavy interface. Machine settings, transmission information, camera views, and operating parameters are now in the same monitor. The cab experience overall might be the biggest upgrade.

“Probably the best feature that I’m most excited about on this machine is our brand-new next-gen dozer cab,” says Hussey in the video. “When you get in this machine, what you’ll notice is that controls are put in places where you think you need to find them, and they’re reachable and easy to understand.”

Key cab features include:

• Cleaner, more intuitive control layout
• New thumb switch for travel direction, allowing quick selection of forward, neutral, or reverse
• Dedicated steering lever that focuses solely on steering functions
• Redesigned ripper controls with a fixed lever that serves as an anchor point during ripping
• Thumb and finger controls for ripper lift and curl functions
• Electric adjustable consoles to accommodate operators of different sizes
• New touchscreen machine monitor
• Simplified machine settings and menu navigation
• Improved ergonomics designed to reduce fatigue during long shifts

Cooling, blade, and undercarriage get upgrades too

The D175AX-10 features a single-plane cooling package designed to improve airflow and simplify maintenance. Hussey notes in the video that technicians can remove the cooling package from the front of the machine, making service access easier. The dozer also receives a redesigned 13.9 yd3 semi-U blade intended to improve penetration and reduce material resistance. Below the machine, Komatsu fitted an eight-roller track frame and updated undercarriage components designed for heavy production environments.

Watch the full D175AX-10 walkaround

Want the full tour? Hussey walks through the engine, transmission, steering system, operator station, KomVision, cooling package, and more in our latest video. It’s worth a watch if you’re considering a production dozer purchase or simply enjoy seeing what the next generation of heavy equipment looks like. And after you’re done watching, maybe surf over to our YouTube page and subscribe.

Another Komatsu investment worth watching

Since we’re discussing Komatsu, I will also mention the company recently announced plans to open a new 270,000-square-foot parts distribution center in Mesa, Arizona, by the end of 2026. The facility will support customers throughout the Western United States with faster parts availability and improved delivery performance. That investment is part of a broader infrastructure push that includes more than $5 billion in North American manufacturing investments over the last decade, plus major spending on service facilities, remanufacturing, and distribution networks. Read all about it right over here.