This series of fan motor has virtues such as light vibration, low noise level and long life. Bearings of world famous brand with low noise level are applied, maintenance free. The motor has insulation class B or F, at least 1 thermal protector set inside, internal protection class IP54 or IP55.  Aluminum casings series of motor has the advantage of agreeable appearance, perfect heat radiation, low temperature rise, stable running. The rotation speed can be separated into pole number 2, 4, 6, 8, 10, 12, single speed and multiple speeds. 220/ 380V 50Hz is standard design, while 50Hz and 60Hz voltage 220/380~266/460V can be designed on request. Additionally, special motor can be provided on request.