The aim of this work was design of alternative solution of milling head housing with help of topology optimization. Mechanical properties of new alternative housing solution (specifically a stiffness) are based on the existing milling head IFVW10x manufactured by the ŠMT a.s. company. The stiffness of existing milling head was determined using KISSsys calculation software, as well as the stiffness of the milling head with the alternative housing solution. The special „Guayan reduction” tool (Siemens NX software) was used to obtain the partial stiffness of the housing and to determine its influence on the stiffness of the whole assembly.