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Tue June 22 2021

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Doosans impress at Caithness quarry

26 Jul 16 Gordon Robertson Plant Hire has taken delivery of a new 30-tonne Doosan DX300LC-5 crawler excavator for use at its Barrock stone quarry near Thurso in Caithness.

The new Doosan DX300LC-5 at work
The new Doosan DX300LC-5 at work

The new DX300LC-5 was bought on the basis of the excellent of 14- and 6-tonne Doosan machines that have been part of the fleet at Gordon Robertson for the past six years.

 Company owner Gordon Robertson said: “Our machines take part in all types of projects, including land drainage work in agriculture and housebuilding and I have been very impressed by the performance and durability of all of the Doosan excavators since I purchased the first 6-tonner in 2010.  All of our drivers are delighted with the new DX300LC-5 excavator and have remarked how comfortable the cab is and how smooth the machine is to operate.

He said that the ability of local dealer Balgownie to within three weeks of ordering was also key to the purchasing decision.  “We needed the machine quickly to work with a new 3.5-tonne hydraulic breaker we had purchased for breaking out rock at the quarry,” he said, “and we are now producing 50% more aggregate at the quarry since the new Doosan excavator arrived.”

The new DX300LC-5 is powered by the Scania DC9 5-cylinder diesel engine, with an output of 202 kW of power at 1800 rpm, providing a 27% increase in engine power and a 30% more torque than the previous LC-3 model.  The engine meets Stage IV emission regulations without the need of a diesel particulate filter (DPF) through the use of cooled exhaust gas recirculation (EGR) and selective catalyst reduction (SCR) after-treatment technologies.

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New features include auto-idle and a ‘Trip Meter Setting’ screen that allows operators to check daily fuel consumption (or over any preselected period).

To save fuel further, Doosan’s SPC (smart power control) system optimises the balance between the pumps’ output and the diesel engine.

“The new Doosan DX300LC-5 excavator is using 10 litres per hour less fuel than the two bigger 35-tonne machines I run at the quarry,” Gordon Roberston said. “This really begins to add up when you consider it equates to around 500 litres of fuel a week – a massive saving.”

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