About Us

About Us

Welcome to the forefront of mechanical engineering innovation with S.T.M. Riduttori. Our team stands as a unique force, dedicated to manufacturing the most comprehensive range of gearboxes and geared motors available today. From light to heavy mechanics, we specialize in providing cutting-edge technical solutions tailored to meet the specific needs of our valued customers. 

Our commitment goes beyond just products; it's about forming a lasting partnership with our customers. At S.T.M. Riduttori, we of fer not only high-tech solutions but also invaluable expertise and tailored application strategies. It's a partnership built on the belief that unity is strength, and it is synonymous with ensuring our customers' complete satisfaction.

Our full product range

for control and power transmission is expressed through one single policy: high technology for successful products.

Designing and manufacturing innovative and reliable solutions for power transmission and control in the industrial sectors, promoting sustainable development shared worldwide.

S.T.M. is market driven, strives to be a company “easy to work with” and with high customer orientation for creating long term partnerships.

Pursuing a growth strategy, which can be defined as Global: reflecting both global and local considerations, universalizing and particularizing the market tendencies.

Our Values: Transparency, Cooperation and Willfulness.



The year 1976 is not only a date for the STM Team. It represents the beginning of a small company that is now an important reference point in the mechanical transmission field, thanks to the entrepreneurial capabilities, expertise, and firm commitment of the promoting partners (Girotti Tiziano, Vignoli Altero, and Lucchini Giuseppe).



Construction of a 10.000 sqm building: our company headquarters in Lippo di Calderara di Reno (Bologna). STM Team has turned from a craftsman reality to a big industrial company specialized in the design and manufacturing of speed reducers. STM Team is nowadays well known in national and international markets, in which it has reached a well-respected position.


In 1998 STM achieves ISO 9001 Certification with the aim of granting a good quality system for the different market needs.



GSM achieves ISO 9001 Certification.


STM Team, always looking for new innovative solutions, designs, and sells, for the first time in the world, the thogonal axes skew gearbox with at least two axes of reduction.



STM Team is officially acknowledged as highly qualified public and private laboratory by the Italian Ministry of Education.


STM Team introduces the planetary gearbox for industrial EX series after two years of planning and sturdy, in order to develop its own range of products.



Implementation of STM Team product Configurator Tech Button, which allows users to choose and download 2D and 3D drawings.


Birth of a new production center, which is controlled by STM and is specialized in precision mechanical processing. Rettifiche Resca, VP Tornitura and MET are members of this center.

South Africa branch opened in Johannesburg, featuring a 1000 m2 facility.



STM Team acquires the company Neri Motori Srl, guaranteeing its customers a complete and complementary supply service that combines gearboxes and electric motors.

STM Riduttori South Africa expands its’ facility to 1500m2.


STM obtains the Certificate UNI/PdR 125:2022 which attests to the company’s commitment to take measures and actions that guarantee Gender Equality in the workplace.

STM Riduttori South Africa expands it’s Johannesburg operations to 2500m2 and opens a branch in Cape Town.



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