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D7R Medium Bulldozer

The D7 series medium bulldozer began service with the U.S. military during World War II. With upgrades and changes, it has been a workhorse for the U.S. military, fulfilling its primary earthmoving role as well as a host of other roles discovered for it, for example mine clearing with a special flail adapter kit. Its latest version, the D7R is currently used by the U.S. Army, being the primary earthmover for construction of survivability positions and antitank ditches. It must be transported by trailer due to its poor mobility.
D7R Medium Bulldozer Copyright © U.S. Army


In active service


Manufactured by: Caterpillar


1 Operator


Length: 6.93 meters 22.75 feet
Width: 3.66 meters 12 feet
Height: 3.35 meters 11 feet
Weight: ~22 680 kilograms 50 000 pounds
Power plant: one Caterpillar 3306T Diesel engine
Performance: 200 horsepower
Fuel capacity: ~454 liters 120 gallons
Maximum forward speed: 9.66 kilometers per hour 6 miles per hour
Maximum reverse speed: 11.43 kilometers per hour 7.1 miles per hour
Fuel consumption: 22.71 liters per hour 6 gallons per hour