Caterpillar D7R tracked dozer

The D7R's Cat C9 ACERT™ engine, with a net power rating of 174 kW (240 hp) at rated engine speed, meets standards in accord with China Stage II (GB 20891-2007), EPA Tier 2 and EU Stage II emissions regulations.

Given its likely applications, Cat have deliberately kept electronic control systems to a minimum on the D7R, but the machine is equipped with the field proven Cat ADEM 4 (Advanced Digital Engine Management) electronic control module to optimize engine performance and fuel economy.

The durable, and unique, torque divider sends 70 percent of engine power through a torque converter and 30 percent through a direct-drive shaft, ensuring maximum drive train efficiency and the torque multiplication to move heavy loads.

The D7R features a massive mainframe, and robust powershift transmission. The final drives are elevated, isolating the track-drive sprockets from dirt, rocks and ground shock loads, which are then dissipated in the massive mainframe.

The heavy-duty undercarriage, available in three configurations to match specific operating situations, features sealed and lubricated track chains, a robust tubular roller frame to resist twisting and bending forces, life-time lubricated track rollers and idlers that greatly extend undercarriage life and deliver lower operating costs.

The implement hydraulics feature a pilot control and load-sensing system with a variable displacement pump, which maximizes efficiency and fuel economy by operating at the precise level required to get the work done.

Inside, the D7R features a Comfort Series seat within the isolation-mounted, pressurised cab. Low effort implement and steering/direction controls are ergonomically designed for easy use and operator comfort. Simple to read gauges and warning lights, heating and air-conditioning combine to provide maximum operator comfort.

The overall design promotes all the elements of proven design for high productivity, long durability and low life time operating costs through ability to rebuild components and overall machine efficiency.

Additionally, the D7R can be equipped with the optional Cat AccuGrade system for automated blade control. AccuGrade can use laser, total station or satellite positioning systems as the guidance source.

Currently available in the US, the caterpillar D7R is expected for Australian delivery within the coming months. See your Caterpillar dealer for further details.