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Major upgrade for Atlas Copco Minetruck MT42

Atlas Copco has upgraded its Minetruck MT42 42-tonne articulated underground mining truck, adding features such as a new box design and adding an engine option to clients who need to meet the Tier 4 final and EU Stage IV emissions standards.

“The Minetruck MT42 was introduced to the market in 2009, and has since been a faithful workhorse for mines around the world,” Atlas Copco says. “Now a range of new improvements has given this 42-tonne capacity vehicle the means to beat its own high productivity record.”

The new design of the high-strength-steel box keeps the same physical size as the previous model, but reduces the dump height and optimises the internal plate angles for easier material release.

“In addition,” the company says, “the new box is equipped with an innovative tailgate, which acts as a spill guard. The tailgate folds down automatically behind the box before dumping without affecting either ground clearance or visibility for the rear view camera.”

The operator is kept informed of the hydraulically operated gate’s status via a display in the cabin.

The new engine alternative for Minetruck MT42, the Cummins QSX15, meets the exhaust emission requirements of both EPA Tier 4 final and EU Stage IV. Atlas Copco says that, compared to Tier 3 emission levels, the new engine represents a 90 percent reduction for both particulate matter (PM) and nitrogen oxides (NOx).

“The engine installation is fully integrated into the design of the Minetruck MT42 and the Atlas Copco’s Rig Control System, RCS,” the company says. “As an example, the status of the particulate filter and the level of the diesel exhaust fluid tank can be monitored on the display in the cabin.”

The new engine is only suitable for markets with supply of ultra-low sulphur diesel (ULSD), and low-ash engine oil, such as Australia.

Also optional on the new Minetruck MT42 is an electromagnetic retarder braking system, which provides wear-free braking by creating resistance and retardation when hauling downhill.

This can even allow for a higher speed under the right conditions, resulting in increased productivity. This solution can be especially useful in applications such as waste rock fill haulage or in cut-and-fill applications.

Deliveries of the new Minetruck MT42 will begin next year.

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