NORDTRAK is an abbreviation and stands for North German Tractor Factory. Their tractors with the designation Stier were built from 1947 to 1957. Special features were the four wheels of the same size and the permanent all-wheel drive. The four-wheel drive made the Nordtrak tractors particularly suitable for use in difficult terrain, but they were expensive compared to rear-wheel tractors. As a result, the company had to file for bankruptcy in 1956 and one year later the last bull tractor rolled off the assembly line. In total, almost 1,300 tractors were built.