Komatsu America has introduced its line of D37-23 and D39-23 crawler dozers for land clearing, grading, forestry and site work.
The D37-23 and D39-23 are powered by Komatsu’s Tier 4 Interim SAA4D95LE-6 engine which lowers fuel consumption by up to 10 percent compared to previous models. The machines also feature two Working Modes to match power to the application. Economy (E) mode is for general dozing, leveling and spreading applications, while Power (P)mode is for slot dozing, ripping and uphill dozing.
Both crawler dozers operate at 220 rpm and push with a net 89 horsepower and 105 horsepower, respectively. Operating weights range from 18,386 to 21,363 pounds. Long track-on-ground standard (EX) and low ground pressure (PX) models are available, as are a full guarding package, hydraulic winch and other attachments.
The D37-23 and D39-23 crawler dozers feature an advanced electronic control system; after-treatment functions; the Komatsu Diesel Oxidation Catalyst (KDOC) to remove soot without the need for a Diesel Particulate Filter (DPF); a Variable Flow Turbocharger; direct flow air filter; high pressure common rail fuel injection; 16-valve cylinder head; and Exhaust Gas Recirculation (EGR).
The crawler dozers are equipped with KOMTRAX telematics technology, which wirelessly sends machine operating information such as uptime, location, alerts, load ratio and fuel consumption to a secure website.
Cab features include a steeply sloped engine hood, a forward cab design, an integrated ROPS/FOPS structure, large glass windows for better visibility, internal air pressure and air filters to minimize dust inside the cab and viscous cab damper mounts to suppress noise and vibration.
Other features include a PAT blade; proprietary engine and hydrostatic transmission pump control technology; HST transmission; counter-rotation; two gearshift modes, Variable and Customizable Quick shift; and Palm Command Control System (PCCS) joystick with thumb-push buttons and electro-hydraulic controls.