Suomen Rakennuskone Oy delivers 12 Komatsu Dump Trucks to Arctic Infra Oy

HM460-6 – more power and performance in all terrains.

An unprecedented line-up of Komatsu’s new-generation dump trucks gleamed alongside the spring snow at Suomen Rakennuskone Oy’s Kempele facility situated in northern Finland .

Arctic Infra Oy, based in Sodankylä, acquired 12 HM460-6 dump trucks in a single purchase. Ten of the trucks were presented for a group photo at the handover event in early March. After final outfitting, these brand-new machines will be delivered to the Kevitsa mine situated in Sodankylä, with all 12 units being operational by April 2026.

Among the 12 machines is, for example, the very first new dump truck manufactured in Japan with serial number two. Komatsu does not assign number one to serial production machines. The other units also feature early production series numbers.

“We had (taken out previously) test-drove Komatsu’s previous model, the HM400-5, at the mine on a couple of occasions. We identified some shortcomings in it for our purposes, for example in the drivetrain and differential locks. However, at Bauma last year we were shown images and specifications of the new model at Komatsu’s stand, which sparked our interest. The exact features we had been hoping for had been implemented in the new model,” says Petri Alatalo, CEO of Arctic Infra.

The deal was initially made for eight machines based on photos, and later expanded to include four more.

“Mutual trust was a key factor in concluding the deal, even though the machine had not yet been seen in its final form,” says Key Account Director Jari Salomäki from Finnish dealer Suomen Rakennuskone.

The novelty of the HM460-6 is further highlighted by the fact that its world premiere took place in early March 2026 at the ConExpo trade fair in Las Vegas.

“As trade-ins, we are now offering eight Volvo dump trucks for sale, including five units from the 2021 model year,” Salomäki adds.

Arctic expertise

Arctic Infra, who specialize in contracting work in tough northern conditions is owned by Petri Alatalo, Jonne Ruopsa and Jussi Tuohino, and was founded in 2019. The starting point included the acquisition of Kantmark Oy.

“At that time, owner Jarmo Laitamaa decided to give up his business, and we purchased the entire operation including machinery, personnel and reputation. From the beginning, our goal was to contribute to renewing earthworks construction in northern Finland,” says Alatalo.

The average age of the machinery acquired in the deal was 26 years.

“We have systematically renewed our fleet, and after about 50 machine purchases, the average age is now around three years. These new Komatsu machines ensure that we can serve our customers even more efficiently going forward.”

At Kevitsa, Suomen Rakennuskone employs around 50–60 people, some dedicated solely to contractors. According to Alatalo, the local availability of aftermarket services and maintenance further increased confidence in Komatsu.

At the Kevitsa site, Arctic Infra performs mining support operations such as waste rock hauling, dam construction and maintenance of mining infrastructure. Two of the newly delivered dump trucks will be equipped with 40-cubic-meter water tanks for dust suppression purposes.

“In addition to dump trucks, our fleet includes excavators and wheel loaders. Last year, our average workforce was around 80 people. We have a skilled and committed team. Ninety percent of our employees come from Lapland, and all our worksites are located north of Oulu,” Alatalo explains.

Arctic Infra’s revenue has been growing strongly, from about five million euros in 2020 to nearly 15 million euros projected for 2024.

Alatalo estimates that the company has accumulated around 150,000 hours of experience with dump trucks.

Pictured above from left: CEO Petri Alatalo of Arctic Infra Oy, chairman of the board Jussi Tuohino and maintenance manager Matias Ylisaukko-o are ready to employ 12 new Komatsu HM460-6 dumpers for mines and other infra worksites of the company in Northern Finland. Juuso Ahola, the product manager of Komatsu Europe, and the product manager of Finnish Construction Machinery Tero Ala-Tala, after-marketing manager Jarno Oikarinen, user trainer Timo Siironen and the key customer director Jari Salomäki, who closed the deals on behalf of SRO, are also happily standing in front of the new fleet of machines.

More power

Komatsu’s dump truck manufacturing dates back to 2001, when the first 36-ton capacity HM400-1 was introduced. The new HM460-6 represents a comprehensive upgrade compared to the HM400-5.

In short, the new-generation dump truck features a completely redesigned engine, transmission, drivetrain, frame, cab and body.

The output of Komatsu’s Stage V engine has increased by nine percent to 386 kW, raising payload capacity to 42 tons. Exhaust gas recirculation has been eliminated, and the variable geometry turbo has been replaced with twin conventional turbochargers. Emissions are controlled with a particulate filter and AdBlue injection system. According to Komatsu, fuel consumption has decreased with the new engine.

A new planetary transmission with nine forward gears and two reverse gears also contributes to efficiency. Gear shifting logic has been improved, delivering high torque even at low speeds. Compared to the previous model, torque has increased by 23 percent to 2 803 Nm.

“In tests, the new model achieved 22% better fuel efficiency and about 7% higher productivity in tons per hour. Fuel consumption was reduced by over 10%, and off-road mobility has been further enhanced,” says Juuso Ahola, Product Manager for heavy dump trucks and rigid haulers at Komatsu Europe.

Experience from rigid dump trucks has also been incorporated, including full suspension to improve ride comfort, especially on uneven terrain. Bidirectional axle locks further enhance mobility.

Safe operation

Safety has been a key focus in the design of the new model.

“The HM460-6 includes a comprehensive range of standard safety technologies, such as roll-over protection, front and rear frame inclination indicators, optional dump height limitation and a seatbelt reminder system,” says Ahola.

The operator can now see the tilt angles of both frames at a glance on the display, helping prevent rollover during dumping. If the rear frame tilts excessively, for example when cornering, speed is automatically reduced.

Additional safety features include cruise control, hill assist and an automatically activated waiting brake.

More visibility and comfort

The cab has also been completely redesigned. Visibility has improved both forward and backward thanks to slimmer pillars and increased glass surfaces, reducing blind spots.

Behind the steering wheel is now a single eight-inch display controlling key functions, with 27 language options. Controls are operated via a rotary dial on the right side of the seat. Functions like speed limiter and retarder are located on the steering column for ease of use.

The new air-suspended leather seat includes heating and cooling. There is also a passenger or trainer seat. A separate 10-inch touchscreen is dedicated to cameras.

Ample storage space, Bluetooth connectivity and USB ports are included as standard.

Outfitting and training

The new dump trucks were equipped according to customer requirements at the Kempele facility, which has extensive experience in heavy equipment outfitting.

“Planning took a significant amount of time since this is a completely new machine model,” says Aftermarket Manager Jarno Oikarinen.

The equipment includes centralized lubrication, fire suppression systems, fuel-powered auxiliary heaters, additional lighting, communication systems, cab pressurization and improved underbody protection.

Each machine requires over 100 hours of outfitting work.

Operator training is provided by trainer Timo Siironen:

“Training starts immediately when the first machine arrives at the mine. We go through the technology in detail, especially focusing on efficient and safe operation. This is a multi-week project.”

Komatsu’s Komtrax remote monitoring system also helps ensure optimal usage.

Find out more about the new Komatsu HM460-6 in the promotional video below.