The Caterpillar D7 Caterpillar track-type tractor is a medium bulldozer manufactured by Caterpillar Inc. The first D7 appeared in 1938. The D7C came next in 1955. The D7D came in 1959. The 160hp D7E in 1961. The 180hp D7F 1969.The 200hp D7G in 1974.The 215hp in 1986.The D7H was the first D7 to come with the exclusive elevated drive sprocket undercarriage.The D7R replaced the D7H in 1996 with the current D7R Series 2 replacing that. In March 2008, at Conexpo 2008 held every 3 years in Las Vegas, Caterpillar introduced the D7E. This 235hp D7E comes with an electric drive system powered by a 537cid C9 diesel engine. The C9 powers a generator that turns out electricity that will supply power to a pair of AC drive motors. Compared to the Caterpillar® D7R Series II, the D7E is projected to deliver 25 percent more material moved per gallon of fuel, 10 percent greater productivity and 10 percent lower lifetime operating costs. Read more...Tuesday, July 7, 2009
Caterpillar D7......
The Caterpillar D7 Caterpillar track-type tractor is a medium bulldozer manufactured by Caterpillar Inc. The first D7 appeared in 1938. The D7C came next in 1955. The D7D came in 1959. The 160hp D7E in 1961. The 180hp D7F 1969.The 200hp D7G in 1974.The 215hp in 1986.The D7H was the first D7 to come with the exclusive elevated drive sprocket undercarriage.The D7R replaced the D7H in 1996 with the current D7R Series 2 replacing that. In March 2008, at Conexpo 2008 held every 3 years in Las Vegas, Caterpillar introduced the D7E. This 235hp D7E comes with an electric drive system powered by a 537cid C9 diesel engine. The C9 powers a generator that turns out electricity that will supply power to a pair of AC drive motors. Compared to the Caterpillar® D7R Series II, the D7E is projected to deliver 25 percent more material moved per gallon of fuel, 10 percent greater productivity and 10 percent lower lifetime operating costs. Read more...
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