Select Motors & Transmission (STM) AustraliaSTM spa is a gear reducer and drive system specialist, distributed globally by HMA Flow & Industry. It manufactures a broad range of gearboxes and geared motors. STM focuses on technical solutions for light and heavy mechanics, according to specific end user requirements.

The STM Right Angle Bevel Helical Gearbox OMP from HMA Flow & Industrial is robust and durable due to the monolithic structure. Technically it offers the option of having only the reduction ratio obtained from three gear stages, which translates into a high-quality performance band.

The housings are manufactured from engineered cast iron, except for sizes 63 and 71, which are made from aluminium. The gears are made from case-hardened steel to improve efficiency and noise even under load.