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Caterpillar D10
The Caterpillar D10 is a track-type tractor manufactured by Caterpillar Inc. (then called the Caterpillar Tractor Company). It was the first modern tractor to use the elevated drive sprocket to improve durability, operator comfort, and ease of maintenance.
==History==
The first pilot D10 was D10X1 and was shown in July 1973 at a big Caterpillar corporate meeting. Other prototypes would follow in 1975 and 1977. In March 1977, prototypes P-1 through P-10 would appear and be subsequently dispatched to different job sites. The Caterpillar D10 was the result of a need for a tractor larger than the Caterpillar D9. At this time, competitors were building bulldozers that were more powerful than the D9. Allis Chalmers introduced at Conexpo 69 in Chicago a HD-41 which was the largest crawler in the world. In 1974 after AC and Fiat merged their construction equipment divisions the 524 hp 41-B was introduced. For example, the Fiat-Allis 41-B track-type tractor had 524horsepower (391 kW) at the time, while the D9H had . In 1976 Japanese company Komatsu came out with an even larger bulldozer called the D455A at and . The D10 was so big that it could do about 50 percent more production that the then D9H.
The D10 was introduced at a dealer meeting by Caterpillar in the fall of 1977. Between 1978 and 1986 nearly 1,000 D10s were made at Caterpillar's East Peoria plant. The D10 had sales of their Fiat-Allis/Komatsu competitive sized bulldozers combined. With the introduction of the N-Series tractors in 1986-87 their model numbers were pushed up. For example, the D9N replaced the D8L,the D10N replaced the D9L and the D11N replaced the D10.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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