Schalker Eisenhütte Maschinenfabrik GmbH is a German engineering company, a manufacturer of industrial locomotives and coking furnaces.

The company was founded in Schalke, Gelsenkirchen, in 1872 by Friedrich Grillo with backing from the Grevel family, as Vogelsang & Co.

[4] In 1937 the company began production of electrically powered mining locomotives with equipment from AEG, BBC, and Siemens.

Post war the company continued in its main business areas of coke oven equipment and industrial locomotives.

[1] Towards the end of the first decade of the 21st century the company developed its first main line locomotive, the SDE 1800, a 4 axle Bo'Bo' diesel electric, off-centre cab design with an installed power of up to 1.8MW, designed for freight and shunting.