The STM Planetary Gearbox EX Series from HMA Flow & Industrial is compact, and yet extremely powerful. The planetary drive train makes them the ideal choice for severe duty applications where shock loadings and impacts are more the rule than the exception. The product configuration is highly versatile due to several options as far as the mounting, gear layout, output shaft, and motor interface are concerned. The modular design and large range of ratios simplifies the process of finding the perfect match for any drive problem.