Today, the 1,065 horsepower (794.2 kW) 12-cyclinder D575A is available in two updated models: the D575A-3 bullldozer/ripper and the D575A-3 SD (Super Dozer), a dedicated bulldozer. The first D575A super dozer produced went into operation at a West Virginia coal mine.Īt the mine site, the D575A helped increase the average yards per scheduled operating hour from approximately 375 yards to 750 yards, proving the decision by the mine owners to purchase the machine was the right decision for increasing production. In 1996, Komatsu added a super dozer model, the D575A-2SD, to its line of super-sized crawler tractors. Komatsu field-tested the D575A-2 from 1989 until 1991, and then began full production of the super crawler tractor. The first D575A produced at Komatsu Ltd.’s Osaka, Japan facility was the D575A-2 SR (Super Ripper) which followed an earlier prototype which never went into production because of a downturn in the economy. Size differences aside, both the D11 and the D575A are machines built specifically for the mining and quarry industry and the environments within which they operate. The D11 is only 13.4′ tall and its blade capacity is 74.9y - a difference of approximately 3″ and 15y. However, when compared to the D575A, the D11 comes in short both in height and blade capacity. The D575A’s closest contender, both in size and blade capacity, is the Caterpillar D11. The Super Dozer Blade alone weighs in at a hefty 22,000 lbs. Ground material that would take the average person approximately 720 wheelbarrow loads to move, the Komatsu 575A can effortlessly clear in one pass of its patented 90y capacity Super Dozer Blade. long - over three times the dimensions for an average car - and weighs in at close to 300,000 lbs. With a standard blade attached, it measures 24’3″‘ wide by 38.5 ft. More information on the new Cat D11 XE electric drive dozer can be found by talking to a dozer team member during MINExpo 2021 from September 13-15 in Caterpillar’s Central Hall exhibit, #6229, at the Las Vegas Convention Center.With its gigantic size and capacity, it’s easy to understand how the Komatsu D575A crawler tractor has earned the bragging rights as “the largest operational crawler tractor in the world.”Įverything about the D575A crawler tractor is super-sized: From track bottom to cab top, it averages 16′ high, dwarfing an average-sized man by over 10′. The D11 XE is currently operating at Caterpillar’s dozer proving grounds in Peoria, Ill., and will then complete an extensive field validation plan before entering full production. Longer rebuild cycles, lower fuel consumption and less maintenance come together with higher machine efficiency to give owners the lowest cost of bank cubic meters (BCM) of material moved ever. With a powertrain life targeted to deliver longer rebuild intervals, the simple machine design delivers less major component rebuilding and/or replacing. This electric drive dozer also shares components with mechanical drive models, meaning familiarity for service technicians and fewer parts to stock for owners. Fewer moving parts translates to fewer touches required to maintain the dozer and lower service costs. The new dozer’s modular design simplifies maintenance through improved serviceability of the powertrain. Its updated electronics architecture allows the dozer to take advantage of proven Cat technologies like MineStar™ Command for dozing, which offers both remote control and semiautonomous dozing. Inherent machine protection reduces component damage for improved reliability. The D11 XE fully integrates Cat powertrain, Cat electronics, Cat software and Cat controls for optimized performance. The fresh design targets up to 20% longer engine rebuild cycles than mechanical drive models, while 60% fewer moving parts translates to better machine uptime availability. Promising low emissions-per-ton dozing, the D11 XE targets up to 25% less fuel costs per BCM. When in production, this Cat model will be the world’s largest, most powerful and efficient electric drive dozer with high drive. Leveraging 20-plus years of Cat electric drive experience and field application, the D11 XE dozer’s electric drive system delivers constant power to the ground, continuous pushing and greater maneuverability for faster cycle times and improved fuel efficiency.Ĭombining optimum power to the ground with increased durability and ease of service, the D11 XE delivers the lowest cost per ton operation in dozing applications. MINExpo 2021 affords the mining industry the opportunity to see the future of efficient, productive and sustainable dozing with a preview of the new Cat ® D11 XE dozer.
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