Rototillers are used in plastic greenhouses, glasshouses, orchards, vineyards, gardens, small gardens and in hilly and mountainous terrains. They operate on the principle of rotating tines which get the drive, i.e. the power from the drive shaft. The transmission of drive or power from the drive shaft to the tines is carried out by the gear drives, which consist of a gear arrangement of a drive shaft engaged with a driven gear. In the case of the described tiller, the gear drive consists of worm gear shaft and worm wheel, which ensure smooth and quiet transmission with high transmission ratio and achievable long lifetime. The machining of the worm gear shaft requires abundant knowledge of agricultural mechanization, production technologies and processes of mechanics and steel heat treatments. Material used for the production of the described worm gear shaft is case hardening steel, due to its mechanical and technological properties. The types of steel machining processes used are sawing, turning, milling and outer round grinding, with the help of classical machining systems as well as modern CNC machines and technologies. After the worm gear shaft machining, what follows is a chemical-diffusion heat treatment process of carburization and inductive hardening. Quality control is done at all stages of manufacture and it is carried out with pre-determined measuring devices and tools.