THE Liebherr product portfolio contains a large number of machines for the mining industry with a range of wheel loaders, crawler and mining excavators and crawler tractors that perform a wide range of tasks both efficiently and reliably. Liebherr machines can both mine and process many varieties of rock. They can load crushers and sieving plants and transport the extracted material in the quarry.
Equipment options such as specialist tyres with tyre protection chains or special rock variant bucket set up Liebherr wheel loaders, such as the L566, for tough operations in the quarry.
Liebherr customers from Germany to New Zealand confirm that the powerful machines impress with their performance, efficiency and high productivity in a variety of quarry operations.
Robust designs make the large Liebherr wheel loaders (L550 to L586) well suited to quarrying operations. Using more than six decades of experience, Liebherr has developed and constructed key components for these machines including engines, hydraulic cylinders and electronic components. As a result, Liebherr is able to guarantee manufacturer quality in every aspect. In addition, Liebherr wheel loaders can be set up for intensive mining operations with a variety of equipment options including specialist tyres with tyre protection chains, windscreen guards, and special rock or HD variant buckets.
Liebherr engineers in Austria have developed a clever solution for engine installation by installing the engines in the rear of the machines. The centre of gravity is moved to the rear of the wheel loader so that the diesel engine and the variable displacement pump counterbalance each other. This means that Liebherr can dispense with any ballast, which achieves lower operating weights and higher tipping loads.
For example, when handling heavy rock material, a high tipping load is an advantage as this enables contractors to use larger buckets and move larger loads. The lower operating weight also reduces fuel consumption.
Southern Screenworks from Christchurch, New Zealand, were won over by these advantages. The company operates a quarry on New Zealand’s South Island with 10 mobile crushing and sieving plants. Directors Brett Swain and Alan King purchased their first Liebherr wheel loaders in 2007. Three more followed as a result of their positive experience with the machines.
Today, a fleet consisting of an L564, L566, L576 and L580 moves more than 1500 cubic metres of rock material per day, equivalent to approximately 300 tonnes. “Before we buy a new machine, we compare efficiency, performance and reliability. We opted for Liebherr because other suppliers had nothing on Liebherr in terms of these criteria,” explained Brett Swain.