![]() Meeker says a unique aspect in the industry is the machine’s fully suspended undercarriage, called the heavy-duty extended life undercarriage, which provides up to 25% more wear life in abrasive conditions. ![]() “This particular component is responsible for about 15% of reduction in fuel, or 15% efficiency improvement.”Ĭaterpillar Inc.He notes there is a large amount of software and electronics involved in the control of the torque converter to ensure it provides smooth, reliable and productive operation, as well as gets extra efficiency and power to the transmission.Īlso aiding the productivity improvements of the D8T is the engine whose maximum power was increased from 363 hp (270.7 kW) to 394 hp (293.8 kW) net power was increased from 312 hp (232.7 kW) to 354 hp (264 kW). “What it does is automatically locks and unlocks as it needs to to get the maximum amount of efficiency out of this powertrain component,” he explains. Meeker says Caterpillar took its legacy system-called the torque divider because it included a planetary gear set in conjunction with a torque converter-and added a lock up clutch to it. The transmission works together with a lockup clutch torque converter to provide smooth shifting and operation to ensure a comfortable ride for operators. ![]() “Again, the fully automatic transmission helps to optimize the tractor for the maximum dozing efficiency,” says Meeker. When working in lighter duty applications, such as light spreading or clean-up work, a fuel savings of up to 11% can be achieved. “The new lockup clutch four-speed transmission is extremely efficient, and we’re able to bring that 18% more material movement without burning anymore fuel.” “In terms of efficiency, you’re going to do all this work without burning additional fuel on this dozer,” he notes. “So no shifting required, very easy to use. “Our fully automatic transmission automatically selects the most productive mode and most productive gear for you,” says Meeker. The new transmission, in conjunction with the dozer’s new engine, provides up to 13% more drawbar power. Operators simply need to drive into the dirt piles, and the transmission will automatically shift up or down, lock and unlock as necessary to ensure the right amount of power is being driven to the ground in the most efficient manner. In addition, the transmission is fully automatic, shifting whenever necessary to optimize operation. “We’ve effectively put another gear between 1 and 2, which is truly in the sweet spot of productivity and efficiency when you’re in heavy drawbar pull applications, doing heavy cut work, and even transitioning into a carry and moving that material.” Meeker says the machine’s new four-speed transmission is a key component of the productivity and efficiency improvements. In addition to the new D8T, these edges are also available for any SU blades for Caterpillar’s D6, D7 and D8 dozers. ![]() In regards to serviceability, Meeker says the edges offer an improvement as they do not require a mid-life flip, and are designed to last twice as long as a traditional cutting edge. He also notes material isn’t broken up when using the cutting edges, creating greater blade mass and load on each push, helping to get more work done when doing production dozing. With these performance cutting edges, up to 25% more payload on each blade pass can be achieved. “The outside edges are a little further forward than the center, it a variable cutting profile that helps fill the blade faster,” he explains. These allow customers to load the blade faster with greater density material in hard ground conditions, such as clay and rock, that are difficult to penetrate with a blade, says Meeker. Optional performance cutting edges are available for the blade, as well. However, it is still in the same transport regulations as before, making it easy for customers to move the dozer from site to site. (10.3 m 3), whereas the prior version had a capacity of 11.3 yd 3. It features a taller, wider and deeper design, bringing its capacity up to 13.4 yd 3. The new SU (Semi-U) blade, for instance, is 19% larger than the company’s previous version, which helps move more material, thus helping increase productivity. With these updates, the dozer is able to deliver up to 18% more productivity and in some applications increase fuel savings 11%.Īccording to Sam Meeker, Product Application Specialist for Dozers & Track Loaders at Caterpillar Inc., the productivity and efficiency improvements are made possible due to aspects such as a new transmission and engine, larger blade, as well as improved ease of use. introduced its new D8T dozer featuring updates to several parts of the machine.
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