SEF MOTORIDUTTORI,  located in Monza,  was established in 1979 as a distributor of industrial products for drive transmissions such as gearmotors, gearboxes and motors.

During decades of partnership with STM GSM Group SEF has become a well-established partner as a local distributor.

In 2014 SEF Motoriduttori has officially joined  STM Group, becoming to all intents the STM   Lombardy branch.

Located in Monza,  strategic point in the  heart of the Northern Italy manufacturing area.

SEF customers have access to  a broad products and services portfolio such as: pre and after sales ,  technical support, commercials and logistics.

SEF most advanced ranges and fully scalable products  can  meet all customers requirements offering  the most advanced and customized solutions.

Thanks to the achieved know-how and with the purpose to offer increasing  cutting edge service , a STM Service Point is operating within SEF  premises  , carrying out assembly services for urgent deliveries.

The branch is also acting as a distribution center, with a stock of products normally available.

STM GSM Group member [Subsidiary Lombardia] Mechanical Drive Technology – Gear Units, Geared Motors, Planetary Gearboxes, Motors, Converters, Drives.

Lombardy Branch for STM Group


SEF motoriduttori  performs  the official STM Service Point for assembling and exclusive distribution of STM products both for Italian and foreign market: through  the Red Button  fast delivery service your gearbox can be delivered within  48 h of order date.

Tel. +39 039 837941


SEF Motoriduttori srl
Via Velleia, 1 - 20900 Monza (MB) - ITALY
Part. Iva IT 02064940964
Tel. +39 039 837941
Fax +39 039 8379490

General Sales Terms