Zakłady Mechaniczne URSUS (Ursus Mechanical Works) was established in 1893 in Warsaw, initially focusing on agricultural manufacturing. The company's first tractor was produced in 1922. In the 1950s, Ursus successfully transitioned to producing tractors based on Zetor designs. By the 1970s, the company had formed a licensing agreement with Massey Ferguson to utilize their tractor designs.