The EP PolyGearbox (RPG) is a compact and lightweight reduction gearbox with a built-in limit switch system that’s suitable for assembly of a locally available electric engine. The PolyGearbox is used in manually-controlled or climate-controlled ventilation and display systems in poly greenhouses. The quick and easy-to-installEP PolyGearbox is definitely rainproof and windproof. The PolyGearbox has a high protection class (IP65) and can be used in an ambient temperature of 0-60 °C.
The low-noise PolyGearbox has a gearwheel transmission and a worm wheel transmission, which are integrated within an aluminium precision housing. The self-braking worm wheel transmitting ensures that the drive shaft can be locked when the decrease gearbox isn’t running. The fully sealed reduction gearbox has an expansion chamber with a diaphragm to keep the gear essential oil at a minimal pressure under all situations, even at high temps. Thanks to the usage of an expansion chamber, the PolyGearbox could be installed in any position. There are no restrictions, because there is no need for a bleed plug. The sealed reduction gearbox keeps the apparatus essential oil of the PolyGearbox in optimal condition for its entire operating life time. The PolyGearbox is suitable for discontinuous use, working class s3-30%, with a maximum activation period of 25 minutes.
The PolyGearbox reduction gearbox has an FT85 engine assembly flange, on to which a suitable IEC standard motor can simply be installed (EN 50347).
The PolyGearbox has a rotating limit switch system with operating switches and circuit breakers (NC contacts) for turning off by 
the end positions. The limit switch system is installed within an built-in chamber and is definitely enclosed by an impact-resistant plastic-type material cover. The limit switch system is accessible and simple to adjust. The limit change system’s optimum Gear motors for Greenhouse switching range is 40 or 64 revolutions of the drive shaft. The cabling is connected in spring-clip connections. The PolyGearbox comes with an IP68 M16 x 1.5 cable gland (5-9 mm cable) for the cable feed-through.