STM S.p.A. products

Single stage inline gearboxes AR/1; Thanks to our long and wide experience in the field of in-line gearboxes of 2 and 3 stages, we devised the single stage: the right ratio between torque and price for industrial applications where a high number of revolutions is required on the output shaft.

The company has decided to update its main product by adding three innovative principles: two are technical and one is commercial. All aluminium components are die casted (from size 28 to size 70) to increase resistance to torsional and structure flexibility. ZI teething profile (section and involute) has been adopted to increase efficiency and silentness. Finally, a modular attachable output flange (FL) has been adopted to increase flexibility. New ideas to approach a bigger market together: first, since 1987, with the patent of the torque limiter built inside our standard gearbox.