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