Qingzhou Yongsheng Machinery Co.,Ltd is one of the professional China 1220mm hammer exhaust fan manufacturers and suppliers,Website:://.qzys-exhaustfan.com, welcome to wholesale low price 48 inch hammer exhaust fan from our factory.WORKING CAPACITY Yongsheng Hammer type exhaust fan all have big air flow, one set of our fan equal to one and half one sets of common exhaust fan. The capacity from 23000 cubic meter per hour to 55800 cubic meter per hour. Hammer Fan FJ1000Fan size1100mm×1100mm×400mmFrameHot galvanized sheet, high anti-corrosive durabilityMotorSiemens motor, Other motor accordingly, CE certificateMotor technical data0.75Kw     380 V     50 Hz   three phaseMotor RPM1400r/minNoise≤70dbBlade diameterΦ1000 mmBlade No6Blade materialMirror face stainless steel, avoid dust accumulationBlade RPM600r/minBlade instructionBalance test after assembled which can assure steady running and even airflow.ShutterHammer supporting system, shutter can  be opened at 90 degree.beltMitsubishi beltHousingGalvanizedAirflow32500㎥/hBlades The blade forming a stamping process, no deformation , no broken , beautiful and durable ,never rust  calibrated by high-accuracy dynamic balance tester ,ensure the stable operation of the fan ,reduce noise and extend service life The belt adopts belt automatic tightening facility to ensure the belt will not loose or drop Hammer Swung drop hammers which are made of high quality nylon would guarantee the shutter open and close easily and steadily Bearing bearing adopts imported double-row bearing with special waterproof design, high strength, lower noise, long service life  Impeller The V-type belt pulley is cast with high intensity aluminum-magnesium alloy ,with light weight and high strength , lower vibration and attractive appearance , eliminate internal stress Motor Equipped with high efficient and energy-saving electrical motor which had passed the National CCC Certification Protection grade :IP55,Insulation grade: Grade F Dynamic Balance machine test. Yongsheng Fans were calibrated by advanced computer dynamic balance tester, to achieve smooth operation reduce noise, enhance stability and extend service life