Serving You Better
Komatsu restarts production of popular HM400-5 articulated haul truck at its Chattanooga Manufacturing Operation
Due to the growing demand for off-road trucks in construction, quarry and mining operations throughout North America, Komatsu is once again producing its HM400-5 articulated haul truck at its Chattanooga Manufacturing Operation (CMO) in Tennessee. The trucks were produced at CMO in the mid-2000s, but production shifted to Japan, where it has remained until now.
“The HM400 is a very popular truck because it’s built for reliability and durability,” said Bruce Boebel, Director of Products and Services for Wheel Products at Komatsu. “We’re excited about reshoring production here in North America. As trucks are completed, they’re on a lowboy going to a customer’s site immediately.”
Komatsu designed the 473-horsepower HM400-5 to move material across challenging terrain while delivering productive, consistent performance for operators of all skill levels. It has a 44.1-ton payload and a low loading height of 10 feet, 5 inches.
“The HM400-5’s versatility makes it a great fit for a variety of applications,” Boebel noted. “A dump bed for hauling materials is most common with the HM400, but they can be customized for water and lube trucks too.”
First off the line
Rogers Group Inc., an aggregate producer and highway construction company based in Nashville, Tenn., purchased the first HM400-5 off the CMO line and is using it in one of its 70-plus quarries, along with many other Komatsu products.
“We have found as we study owning and operating costs of all our fleets that the HM400 gives us the best overall value [on articulated trucks],” said Darin Matson, President and CEO of Rogers Group. “Komatsu is a big supporter of our industry, and that’s something we look at in our equipment-buying decisions. Of course, we think it’s great that they are building the HM400 right here in our home state.”
Optimum traction in soft ground
The HM400-5 features the Komatsu Traction Control System (KTCS) that is designed to provide excellent traction in soft and slippery ground conditions without sacrificing steering performance. If conditions worsen and the truck detects tire slippage, the inter-axle-lock kicks in. If tire slippage continues, it will automatically apply an independent brake to the wheel on which the slip was detected to help regain traction.
Boebel added, “The hydro-pneumatic seat suspensions help cushion the ride for operator comfort and reduced fatigue.”
An integrated payload meter is standard and displays loaded-material weight on the in-cab monitor. External lamps illuminate green, yellow or red as the payload increases to help prevent under- and over-loaded haul cycles.
Komatsu made service convenient with a lightweight resin hood and a cab that tilts rearward for easy access to the engine and transmission. Production data and other information is stored on board the HM400-5 and is accessible by plugging a laptop into a port or remotely via Komtrax. Users can monitor daily, weekly or monthly detailed data to allow for full production studies.
“We have seen the demand for our HM400-5 trucks grow significantly in both the U.S. and Canada, which is why we began producing the trucks here in the U.S.,” said Rod Schrader, Chairman and CEO, Komatsu North America. “The domestic production of this popular truck supports Komatsu’s commitment to jobs and manufacturing in the U.S.”
