Caterpillar Incorporated, also known as CAT is a United States based corporation that is based in Peoria, Illinois. The company commonly known as CAT is known around the world as the largest manufacturer of construction and mining equipment, diesel and natural gas engines, and industrial gas turbines.

The CAT (Caterpillar) 420D and 430D backhoe loaders are the high performance machines in the D series lineup. The 420D boasts 85 HP and a backhoe digging depth of 14 feet when equipped with a standard stick.

The D-11 from Caterpillar is among the series of tracked type tractors are among the largest conventional bulldozers in the world, second to the Komatsu D575. It comes in two variations, the standard D-11R and the bigger and heavier D-11R CD.