![]() It proved the perfect match for pushing scrapers cleaning up around large shovels and performing a multitude of tasks with a range of attachments such as side boom, tree stinger, snow plow, root rake and log skidder. Equipped with a dozer blade measuring 11 feet 4 inches wide, the "Super C" tipped the scales at 34,000 pounds and boasted a top speed of 19 miles per hour. It was upgraded to the "Super C" in 1949 with engine choices of either General Motors 6–71 at 186 hp or Cummins HRB-600 at 165 hp. The Model C Tournadozer was originally equipped with a Buda 160-hp diesel engine and "Tournamatic" transmission. The 300-hp Model B and 143-hp Model D had limited success, but the Model C and its successor, the Super C, sold by the thousands. It never progressed beyond the experimental stage. The Model A was exhibited at the 1948 Chicago Road Show as the largest bulldozer ever built, but then proved unreliable in the field. It carried a 16-foot-wide dozer blade and was capable of a top speed of 14 mph. The largest was the huge 750-hp Model A powered by a Packard marine engine running on butane fuel. ![]() Factory wartime orders delayed progress, but after prototype testing, all four models were released into production during 1947.Īll the Tournadozers were mechanically propelled, utilized the skid-steer principle for steering, and were fitted with electrically operated blade controls with cable winch. He wanted a tractor that would not only be more powerful than anything else on the market, but could also match the speed potential of his motor scrapers.īeginning in 1943 in typical LeTourneau fashion, he developed a line of four large rubber-tired dozers with engines up to 750 horsepower. He felt the slow speed of crawler tractors impeded the productivity of his high-speed earthmovers. LeTourneau wanted a machine to push-load his big rubber-tired Tournapull scrapers, which he had introduced in 1938. Known as the Tournadozer, it was steered by slowing or locking the drive wheels on either side, a steering method that became known as the "skid-steer" principle.īut unlike today's skid-steer loaders, the Tournadozer was no compact machine. LeTourneau invented a rubber-tired dozer capable of much higher speeds than the crawler tractor. Long before the era of the modern skid-steer loader, earthmoving pioneer R.G. Learn more about selling equipment with Ritchie Bros., or contact us to discuss your options.A rubber-tired dozer was built to push-load LeTourneau's scrapers, and it was steered by locking the drive wheels on either side. every year-from one item to a complete dispersal. Thousands of companies sell equipment with Ritchie Bros. ![]() Looking to buy or sell mining and earthmoving equipment? Liebherr, a name synonymous with cranes, designed the hydrostatic PR 764 crawler tractor for heavy duty mining needs. Check out RitchieSpecs for more info on the John Deere. The 1050K is a 95,000-lb beast with a dual-path hydrostatic transmission that, according to the manufacturer, allows for pushing through turns without losing material. John Deere’s supremacy in the agricultural equipment market is well known, but the farming equipment giant makes a mean dozer too. Photo credit: William Walker for Automobile Magazine While not built for speed, the D11 is a powerhouse and the closest rival to Komatsu’s vaunted D575. auctions and usually turns heads when it hits the ramp. The D11 is a common sight at Ritchie Bros. The D11 has since gone on to become one of the most-used ripping dozers when it comes to moving rock, earth, soil and more. Caterpillar D11 dozerĪ premier piece of yellow iron in the Caterpillar fleet, the D11 was introduced in the mid-80s to replace the D10 with a bigger track and blade, thus increasing capacity and productivity. It weighs 152,600 kilograms (336,400 pounds) and can only be transported in disassembled form. The D575A-3 SD (SD stands for Super Dozer) is a heavy construction titan used predominately by surface mine operators in North America and Australia. While ACCO might have made the biggest dozer out there, Japan’s Komatsu holds the title for making the biggest crawler tractor currently in production. As of 2012, it was reported to be housed in its birthplace of Portogruaro, Italy. It was commissioned for earth-moving work in Libya in the 80s, but trade embargoes on that country prevented its shipment. Unfortunately, this massive machine never moved an inch of dirt. It measures 40 feet in length and 10 feet in height, with a blade stretching 23 feet wide. Bellissimo! The Italian-made ACCO Super Bulldozer claims to be the largest, most massive bulldozer ever made.
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