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Crawler Tractors

Monday, September 26th, 2011

Crawler Tractors

D65EX 15 Crawler Tractor
US $135,000.00

2006 JOHN DEERE 655C TRACK LOADER CRAWLER TRACTOR EXCELLENT UC
US $52,500.00

2005 JOHN DEERE 650J LT BULLDOZER DOZER CRAWLER TRACTOR GOOD TRACKS
US $39,900.00

2004 John Deere 700H LGP Dozer Crawler Tractor
US $39,500.00

2005 JOHN DEERE 550J LT BULLDOZER DOZER CRAWLER TRACTOR GOOD TRACKS
US $38,500.00

2002 CATERPILLAR D4G XL BULLDOZER DOZER CRAWLER TRACTOR EROPS 6 WAY BLADE
US $38,500.00

Bulldozer History

Bulldozer History

Crawler Bulldozer (track-type tractor, also called crawler dozer) is by an American Benjamin Holt in 1904, successfully developed, which is installed in the track-type tractor in front of manpower to enhance the formation of the earth-moving equipment was the driving force is the steam engine, has followed the successful development of power-driven by natural gas, and gasoline engine-powered track-type tractors, bulldozers Blade also enhance the development of wire rope from a manpower increase. Benjamin Holt is also the U.S. Caterpillar (Caterpillar Inc.) Co-founder in 1925 5Holt manufacturing company and CL, Best Tractor Co. merge to form Caterpillar Tractor Co. to become the world's first earth-moving equipment maker, and success off the assembly line in 1931, the first with a diesel engine, 60 bulldozers. As technology advances, the current momentum bulldozers have been used in all diesel engines, earth moving shovel knife and loosen the soil by a hydraulic cylinder to upgrade all devices. In addition to track-type tractor bulldozer, there are tire-type bulldozer, its appearance a decade later than the track-type tractor around.

As the track-type tractor has good adhesion properties, can play an even greater traction, so at home and abroad, the variety and quantity of their products far exceeds the tire dozers. Internationally, Caterpillar is the world's largest construction machinery manufacturing company, its production of track-type bulldozer large, medium and small total of nine series of D3-D11, the largest D11 RCD, diesel engine flywheel power to 634kw; Japan The Komatsu (komatsu) companies out second place in 1947 began to introduce production of D50 crawler dozers, crawler tractors now have 13 series, from the D21-D575, the smallest for the D21, diesel engine flywheel power 29.5kw, the largest for D575A-3SD, diesel engine flywheel power up to 858kw, it is currently the world's largest bulldozer; another a unique bulldozer manufacturers in Germany, Liebherr Group (Liebheer), whose bulldozers used in all hydrostatic drive, the technology after 10 years of research and development, prototype launched in 1972, 1974, volume PR721-PR731 and PR741 hydrostatic drive crawler tractors, hydraulic components, due to constraints, at present the maximum power is only 295Kw, model PR751 mining.

The three bulldozer manufacturers, representing the world's highest level of track-type bulldozer. Several other foreign bulldozer manufacturer John Deere, Case, New Holland and Deruisita, its relatively high level of production technology.

Get more dozer infomation.please visit: http://www.minibulldozer.net

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