Komatsu has combined more horsepower with an improved undercarriage to increase cycle time and productivity in its new D375A-8 crawler dozer.

The mining-class dozer features an EPA Tier 4 Final engine that produces more than 20 per cent more horsepower while the dozer is travelling in the reverse direction.  The engine boasts 609 hp, and 748 hp while in reverse. The additional horsepower equals faster cycle times and a productivity increase of up to 18 per cent. 

“Whether its reclamation, large construction or production mining applications, the D375A-8 is the right machine for the job,” said Joe Sollitt, product manager for Komatsu America.

The dozer also comes with structural enhancements for increased durability of the mainframe and track frame.

As well, the D375A-8 features an improved suspended undercarriage, larger viscous cab mounts, and a new air-suspension heated and ventilated seat for overall operator comfort.

“Durability improvements to this new model drive down the total cost of ownership while the more powerful Tier 4 final engine significantly increases performance and production,” Sollitt said. “The improvements to the undercarriage, cab suspension  and operator interface will make D375A-8 operators more comfortable and productive throughout their shift.”

An automatic, three-speed transmission and an automatically engaging lockup torque converter provides increased fuel efficiency and faster ground speeds during long pushes, the company claims.

D375A-8 crawler dozerv

The crawler dozer does not require a Selective Catalytic Reduction (SCR) system or Diesel Exhaust Fluid (DEF). Furthermore, the machine is equipped with a Variable Geometry Turbocharger (VGT), which improves low speed response and boost.

Alongside high pressure, common rail fuel injection system, the D375A-8 also includes dual Komatsu Diesel Particulate Filters (KDPFs) and large capacity and high-efficiency exhaust gas recirculation coolers.

To reduce maintenance, increase blade stiffness and minimize blade shake, the dozer features a new single link blade support and larger trunnion bearings. Standard features like blade auto-pitch, ripper auto-return, and shoe slip control reduce operator fatigue and increase productivity.

Other new dozer features

  • Optional hydraulic boarding ladder.
  • Full wrap-around rear platform.
  • Engine access doors that swing forward not upward.
  • Swing-out, hydraulically driven and reversible radiator fan and Mesabi copper-core radiator.
  • Larger cab mounts with more vertical stroke and shock absorption.
  • Large capacity, automatic air conditioner remote mounted behind the cab.
  • Cab layout and work equipment control lever mods to improve ergonomics.
  • Ground level fluid evacuation/service centre with Wiggins quick couplers.