What’s your quarry?

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HAULING ROCKS: The Volvo A35E ADT is one of the most popular haulers in it’s class.

Options for reduced maintenance include the Oil Renewal System (ORS). By regularly burning small amounts of engine oil and automatically adding makeup oil to the crankcase, ORS offers a means to reduce or eliminate engine oil changes and to increase machine availability.

Another interesting option is zip-in zip-out glass. This feature provides rubber-mounted glass, which does not require adhesives to retain the glass. The system enables fast changes of damaged glass.

Volvo A35E Articulated Hauler

Few quarries operate without a fleet of dump trucks to take away the rubble, and a flexible and highly efficient way of doing this is with an articulated hauler.

Volvo claims to have invented the concept back in the 1960s.

The current E-series haulers have a long list of features that set them apart from their predecessors including a payload of 33.5 tonnes,while the patented planetary transmission features smooth shifting providing maximum rimpull (which loosely is the amount of power the truck can transmit between the tyre and the contact patch of the ground.)

The maker says that electronic monitoring of fluid levels means enhanced reliability as well as no need for daily service. Downtime during service is short, thanks to fewer service points on a new suspension design.

A fully loaded body is raised in only 12 seconds, and lowered in only 9 seconds, while the new design of the cabin leaves plenty of room for personal items such as a lunchbox

And the seat features air-suspension.

Visibility around the machine is improved even more over predecessors with the large rearview mirrors, large windscreen and windows.

Giant excavator

Even in quarry pits, really big excavators and mining shovels are a rarity in this region. That said, there is now at least one more to chose from, with the launch of a massive new 800-ton machine at the Vegas show.

Liebherr announced the R 9800 mining excavator. Rated at 800 tons of service weight the R 9800 provides a nominal bucket capacity of 38 to 42 m³ at a material density of 1,8 t/m³. This new flagship of the German firm's mining excavators' range is targeting bucket loads of 75 tons in both versions, as a backhoe and a shovel execution.

The maker is providing for the machine two engine options, two Cummins QSK 60 with a installed power of 1,492 kW / 2,000 hp each or two MTU 12V4000 with a installed power of 1,425 kW or 1,910 horsepower.

Whilst the backhoe digging envelope and bucket width remain similar to the previous Liebherr flagship, the R 996, the R 9800 in backhoe configuration provides a break out force of 1,840 kN with a digging force of 1,750 kN. In shovel configuration, the machine is achieving crowd forces at ground level of 2,980 kN and breakout forces of 2,350 kN. These values ensure superior digging capabilities even in toughest mining conditions.

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