Caterpillar says its new generation Cat D10T2 track-type tractor takes cost per ton production to new levels of proficiency. For decades Cat D10 track-type tractors, in successive model configurations, have delivered on mine sites worldwide in roles that include truck dump maintenance, ripping, stockpile management, stripping overburden, dragline support, trapping, or road building.
Keeping pace with industry requirements, the latest generation Cat D10T2 launched globally in the first quarter of 2014 debuts as its safest and most fuel efficient model to date. Refined large structures in key areas, such as the track roller frame, increase the machine’s durability, plus there are new features such as the Advanced Productivity Electronic Control System (APECS) and Enhanced AutoShift (EAS) that improve output.
“APECS is a key enabler to obtaining the full benefits of EAS, which improves fuel efficiency and productivity by automatically selecting the optimal gear and engine speed combination based on power train load and desired ground speed. This feature is similar in function to an automatic transmission,” explains Barloworld Equipment’s Product Application Group manager, Johann Venter. (Barloworld Equipment is the Cat dealer for southern Africa.)
The D10T2 is powered by a Tier II Cat C27 ACERT engine that performs at a full rated net power (ISO 9249) of 447kW at 1,800rpm in forward drive with a high torque rise of 21% (in forward gears,) enabling the machine to doze through tough material. (The previous D10T model has a net flywheel output of 433kW for all modes of travel.) On the move, the A4E4 engine controller automatically switches power settings based on direction of travel. In reverse mode, this translates to a rated net output (ISO 9249) of 538kW, an approximately 20% power increase when compared to the previous model. New safety features include an in-cab emergency stop device, a seat belt warning alert, and an ‘operator not present’ monitoring system, which locks out the power train and hydraulics under certain conditions to prevent unintentional movement when the operator is not in the seat. During the dozing cycle, an auto downshift feature adds value by enhancing safety and productivity when not in EAS mode and when significant load increases are detected.
“However, this feature won’t automatically up-shift when load is reduced,” Venter expands. (The operator can override these automatic shift features at any time.)
To further enhance durability where operating loads are highest, the Cat D10T2’s newly redesigned roller frames consist of three main castings to resist bending and twisting. The new roller frame improvements also include larger rear major bogie pivot pins, redesigned carrier roller mounting pads, and improved major bogie mounting locations to consistently deliver in varied and demanding mining conditions. The undercarriage system also features a redesigned track master link with single tooth and coarse thread bolts, which provide superior reliability and durability
