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


S.T.M., confirming the attention to the safety and protection of machinery, designs the first torque limiter integrated in the worm gear is still used with great success in the most important applications.


S.T.M. has turned over 90' from a craftsmanlike expression into a big industrial company specialized in the design and manufacturing of speed reducers.


S.T.M. is nowadays well known in national and international markets in which it has reached a most respected position.


In 1998 S.T.M. achieved ISO 9001 Certification, with the aim of granting a good quality system for the different market needs.
Today S.T.M., using modern design systems and high-tech production machineries (working centres, gear cutters, and sophisticated grinding centres), can offer a wide range of speed reducers, electric motors, mechanical and electronic variators.


S.T.M., demonstrating the vitality and the intention to globalize its presence by strengthening the competitive factor in the market by completing the offer, acquired the company G.S.M. Spa by means of a high technological know-how. It produces high power gearboxes and geared motors.

The construction of a new building starts: 5.000 square meters to assembling and shipping.

S.T.M. being always looking for new innovative solutions designs and sells, for the first time in the world, the orthogonal axes skew gearbox with at least two axes of reduction.



From the 12th of July 2005 STM is officially acknowledged as highly qualified public and private laboratory.


S.T.M. builds a new 4.500 square meters warehouse for products storage, in order to improve the logistics.


S.T.M. introduces EX series planetary gearbox after two years of planning and study, widening and strengthening its product portfolio.



International registration of STM trade mark.



Implementation of STM team product Configurator, in order to choose and download 2D and 3D drawings.



S.T.M. uses the most modern design and production systems, work centre, gear-cutting machines, sophisticated grinding lines and it can offer a wide range of gearmotors, drive systems and planetary gearboxes to satisfy the most demanding market.

The need of an always more and more efficient and effective structure concerning human resources and production spaces is the reason why S.T.M. covers an area of 70.000 sq.m.; 6 plants with an indoor area of 46,000 sq.m. Among these, a new 7,000 sq.m. fully automated warehouse, which moves more than 15,000 items on 12,000 loading units.



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