Competition
The nearest direct competitor to the Caterpillar D11 is the Komatsu D475. The Caterpillar D11 can be distinguished from the Komatsu D475 by the elevated drive sprocket, or "High Drive" system, which results in a triangular, rather than oval, shaped track. The updated version of the Komatsu, the D575A, is the world's largest production bulldozer at 168 tons and 1150 hp. A bigger machine was built by Italian firm ACCO, with twin Caterpillar diesel engines giving a combined power of 1,300 hp (970 kW), and weighing 183 tons, in the 1980s, but this was a special model.
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