At the Markgröningen quarry, SWM Schotterwerke Markgröningen GmbH & Co. KG, employs 13 people. Here, the Komatsu dump truck now supports the fleet of two other articulated dumpers, 20- and 50-tonne excavators, three wheel loaders and a bulldozer. Material has been quarried in Markgröningen since 1980. For this work, especially rugged and powerful machines with all-wheel drive are in operation, as on account of the topography at the quarry they must manoeuvre very difficult terrain with up to 18-% gradients. The firm attaches great value to its machinery and equipment being environmentally friendly. Fleet and machines are state of the art, and for this reason the company has invested amongst other things in the new Komatsu dump truck. With the crushers, too, SWM aims to minimize prescreenings, that is unusable material. SWM uses a built-in finger roller screen supplied by August Müller, to reduce “waste”. An average of 20 % prescreenings are produced. With the added screen, another 30 – 40 % material can be made usable.
To ensure the smooth extraction of the shell limestone, another dump truck was needed, which is reliable and efficient. The size of the machine also had to be matched to the existing loading equipment so that their interaction during transport to the crusher runs optimally. What was most important was that the dump truck had to easily cope with the 18-% slope gradients. Managing Director Joachim Burckhardt knew that the Komatsu HM400-5 would be a perfect fit. Since 2017, one Komatsu dump truck in this series has already been working in Markgröningen and meets all those criteria important to SWM. Since its acquisition, It has completed 5000 operating hours without any problems.
Not only the quality and productivity of the HM400-5 convinced Joachim Burckhardt. The flexibility in cooperation with Kuhn Baumaschinen influenced SWM’s decision to buy the dump truck, as the experience with the Komatsu teams in sales and customer service was always very positive.