in our sk series for loads between 125 and 5,000 kg, we have packed high-performance motors into a compact design. the extremly sturdy construction guarantees long service life, reliable operation and low maintenance and ......in our sk series for loads between 125 and 5,000 kg, we have packed high-performance motors into a compact design. the extremly sturdy construction guarantees long service life, reliable operation and low maintenance and service costs. the drive systems with variable speed control reduce swaying and allows for the careful handling of the loads. noise levels are reduced thanks to the smooth and silent running of the trolley.