The EP motor gearboxes are maintenance-free, compact power units for traveling ventilation, screening and lifting systems in greenhouses and livestock sheds. Ventilation Screening And Lifting Gearbox Greenhouse Geared Motors System Engine gearboxes are given fixing bolts and springtime washers. Motors can be sprocket drive or equipped with winch or belt drum. Includes a self-braking worm gear transmitting with a patented built-in linear limit switch program with duty and basic safety switches having excellent switching precision.