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1929 Caterpillar Sixty on display in the Kauri Museum, Matakohe, Northland, New Zealand. The Caterpillar Sixty is a 60 horsepower (45 kW) crawler tractor manufactured by the Caterpillar Tractor Company from 1925 until 1931.
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Caterpillar Pocket Guide (Track type tractors 1925-57), Iconographix, ISBN 1-58388-022-4 ^ TM 9-2800 military vehicles catalogue ^ Caterpillar Chronicle, by Eric C. Orlemann, pub by MBI, ISBN 0-7603-0667-2
Caterpillar first introduced the RD4 in 1936, [1] as the diesel follow on to the successful CAT 30 gas model. The RD4 originally weighed in at 10,000 pounds (4,500 kg), and used Caterpillar's D4400 engine, an inline four-cylinders, with a 4.25 by 5.50 inches (108 mm × 140 mm) bore and stroke. [ 2 ]
Caterpillar Inc., also known as Cat, is an American construction, mining and other engineering equipment manufacturer. [6] The company is the world's largest manufacturer of construction equipment. [ 3 ] [ 7 ] [ 8 ] In 2018, Caterpillar was ranked number 73 on the Fortune 500 list [ 9 ] and number 265 on the Global Fortune 500 list. [ 10 ]
The original model was the Challenger 65 featuring the Mobile-Trac System (MTS) consisting of rubber tracks and a suspension system. [1] Although marketed as the world's first rubber-tracked agricultural tractor, a company using surplus equipment inspired by the design of military tanks had produced a considerable number of rubber tracked tank tractors.
The D11T and D11T CD are both powered by the CAT C32 engine with ACERT technology. [1] The D11R and the D11T differ in the configuration and layout of their operator controls; several levers have been changed into electronic switches, and several controls have been moved for increased visibility.