Overview of the D37EXi/PXi-23 bulldozer

Please note this is not the latest model of this bulldozer. Please view our current range of bulldozers here.

Marubeni-Komatsu Ltd introduces the D37EXi/PXi-23 dozer to the British market. With an operating weight of around eight tonnes, it is equipped with Komatsu’s latest intelligent Machine Control technology, the D37EXi/PXi-23 can perform both finish grading and rough dozing in full automatic blade control mode. This is the second intelligent Machine Control Komatsu dozer model available in the UK, the other being the larger Komatsu D61EXi/PXi-23 Bulldozer.

Inside the cab, customer selectable dozing modes allow system response to be tailored to the current machine operation for optimized performance. Similarly, blade load settings are adjustable between pre-sets to match actual material conditions. Pass to pass, the intelligent Machine Control system can be left with the automatic blade control engaged because of its ability to precisely automate the lowering of the blade at the start of a pass and raise it at the end of a pass. Improvement in combination rough dozing efficiency is significantly higher compared to add-on machine control systems.


Integrated: Standard Factory Installed Integrated Machine Control System

Typical add-on machine control system components mounted on the blade are replaced on the D37EXi/PXi-23 with factory-installed cab top GNSS (Global Navigation Satellite System) antenna, enhanced inertial measuring unit (IMU+), and stroke sensing hydraulic cylinders. These components along with the machine control monitor and controllers mounted inside of the cab are installed at the Komatsu manufacturing facility during machine assembly. They ensure a quality installation and reliability.

When the machine travels around the job site, the cab top GNSS antenna collects accurate surface data by measuring actual elevations. The stroke sensing angle cylinder measures the angle of the blade for
high precision grading accuracy on cross-slope, blade angled or not.

EU Stage IIIB with smart engine technology

The dozers meet EU Stage IIIB regulations using smart engine technology, with operator-specific features bundled into a compact 89 horsepower package. Long track-on-ground standard (EXi) and low ground pressure (PXi) models are available to offer flotation and weight distribution options to customers and best match their applications. Operating weights range from 8,640 kg to 8,940 kg. depending on the configuration and model. At 2200 rpm, the D37EXi/PXi-23 pushes with a net 66,1 kW (89 HP).

No need for a Diesel Particulate Filter

The dozers come equipped with the Komatsu Diesel Oxidation Catalyst (KDOC), which has an integrated design that does not interfere with daily operation. This smart and simplified system removes soot using 100% “passive regeneration” without the need for a Diesel Particulate Filter (DPF). The KDOC has no scheduled replacement interval and is designed for long life with no required maintenance. For owners, this means lower owning and operating costs due to less complexity and seamless operation for the operator.

A Variable Flow Turbocharger, direct flow air filter, high pressure common rail fuel injection, 16-valve cylinder head and Exhaust Gas Recirculation (EGR) are used on the D37EXi/PXi-23, resulting in precise air flow management and more complete combustion, eliminating the need for a DPF.

Unrivalled blade visibility and ride

The steeply sloped engine hood and forward cab design provide more room for operators while moving them closer to the blade, for improved blade visibility, ride quality, enhanced grading ability and overall comfort. The cab also has an integrated ROPS / FOPS structure and is designed with large glass windows for better visibility. Internal cab air pressure and air filters minimize dust entering the cab, and viscous cab damper mounts suppress noise and vibration when traveling over rough terrain making these new models quieter than their predecessors.

Durable and productive power angle tilt (PAT) blade

An efficiently-designed PAT blade with a highly durable box structure and good curvature, rolls material efficiently and improves productivity. Standard adjustable blade pitch allows the operator to adjust the aggressiveness of the cutting edge for varying applications. The hydraulic blade angle toggle switch improves ease of blade operation.

Next generation HST transmission and engine control technology significantly improves fuel economy.

The D37EXi/PXi-23 features two selectable Working Modes, Economy (E) and Power (P), that match machine performance to the application. E Mode is intended for all general dozing, levelling and spreading applications to provide adequate speed and power while saving fuel. P Mode is intended for slot dozing, ripping, uphill dozing or other applications that require maximum power where engine power has priority over fuel consumption.

The D37EXi/PXi-23 incorporates proprietary engine and hydrostatic transmission pump control technology to improve operational efficiency, increase productivity up to 4% and reduce fuel consumption to levels lower than a conventional HST control system. This Komatsu exclusive feature reduces fuel consumption by up to 10% in P mode in demanding working conditions, and up to 20% in E mode under lighter load conditions (compared to the prior model).

Improved operator environment

For a quieter working environment, the interior cab decibel level has been decreased to 77 dB. A more comfortable standard air ride seat with heating enhances operator comfort. A standard rear view monitoring system can be synchronized with reverse operation. The large 7” high-resolution LCD colour monitor displays all machine information. An easy-to-use tab system allows operators to select the parameters they want to see and also provides quick troubleshooting for a service technician with easy to use on-board diagnostics.

The latest KOMTRAX™ technology on the D37EXi/PXi-23 sends machine operating information to a secure website utilizing wireless technology. Data such as operating hours, fuel consumption, location, cautions and maintenance alerts are relayed to the web application for analysis. The KOMTRAX™ fleet monitoring system increases machine availability, reduces the risk of machine theft, allows for remote diagnosis by the distributor, and provides a wealth of other information to drive business efficiency and productivity.

The D37EXi/PXi-23 is supported by KomatsuCARE, a complimentary maintenance program for Komatsu customers that comes as standard with every new Komatsu EU Stage IIIB construction machine. For the first three years or 2.000 hours it covers factory-scheduled maintenance, performed by Komatsu-trained technicians with Komatsu Genuine parts. Komatsu remains focused on lowering customer ownership costs by engineering machines with increased fuel efficiency and productivity.


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