Fan Transmission

Conventional spring, the automatic adjustment	Features
	Advantage	Belt cheap price, automatically adjust the tightness of the belt by a spring.
	Shortcoming	Belt of oil and gas impatience, easy to slip, scalability, the spring easy fatigue cause fan vibration use inappropriate blower.
Transmission of modified scales belt	Features
	Advantage	Resistance to oil and gas can, long-term operation, not easy to slip.
	Shortcoming	Running a certain number of hours, the Ventilatior efficiency with the belt extended efficiency decreasing to maintain high efficiency, must often adjust the belt tension.
Timing belt driven synchronously	Features
	From the manufacture of engine technology, applied to enhance the performance of the fan, timing belts, synchronous transmission, use negative pressure Ventilatior, the belt does not slip, no ductility, permanent Free tighten, to maintain the highest efficiency permanent wind stable, universalat any place.