The EP PolyGearbox (RPG) is a compact and lightweight reduction gearbox with a built-in limit switch system that is suitable for assembly of a locally available electric 
electric motor. The PolyGearbox is utilized in manually-managed or climate-managed ventilation and display systems in poly greenhouses. The quick and easy-to-installEP PolyGearbox is certainly 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 Gear motors for Greenhouse 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 isn’t running. The completely sealed reduction gearbox has 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 expansion 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 life time. 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 engine 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 built-in chamber and is enclosed by an impact-resistant plastic material cover. The limit switch system is accessible and simple to adjust. The limit switch system’s maximum switching range is usually 40 or 64 revolutions of the drive shaft. The cabling is linked 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.