Cat D7E Electric Drive Dozer

Caterpillar's D7E dozer is the construction industry's first diesel-electric dozer, and Cat says it will move 25% more material per gallon of fuel, improve productivity 10% and reduce lifetime operating costs 10% compared to the D7R Series II. A 235-hp Cat C9 engine drives a generator that produces electricity to power two AC electric drive motors, which are connected to a differential steering system.

• A continuously variable electric motor drives each track
• 60% fewer moving parts in the drivetrain
• Center-post cab provides more all-around visibility and wider sight lines to the blade
• Single larger blade lift cylinder provides the same power and stability with less than half the parts

Project profile: K&E Excavating's D7E Cuts Fuel Use in Half

Caterpillar brochure: D7E Track Type Tractor

Video: Caterpillar's 2008 D7E Intro and Demonstration

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