The Cat D7R track-type tractor is said to continue the firm’s R family tradition in providing a simple, robust, easily serviced machine. The new model incorporates components said by Cat to have a proven history of reliability and durability in the most severe applications, including heavy dozing, ripping, land clearing and mining. The D7R’s Cat C9 ACERT engine, with a net power rating of 174 kW at rated engine speed, meets standards in accordance with China Stage II (GB 20891-2007), EPA Tier 2 and EU Stage