【 Performance Comparison 】

Performance comparison		Roots blower	Multistage centrifugal air blower	Single stage centrifugal blower	Air suspension blower	Imported maglev blower	Esurging maglev blower
Bearing	Bearing	Ball bearing	Ball bearing	Tilting-pad bearing	Air foil bearing	Imported magnetic bearing, mature technology, high stability	First magnetic bearing developed independently in China, mature technology, high stability
	Technology source	Made in China	Made in China	Import/domestic	Republic of Korea	Europe	Tsinghua University
	Service life	1-2 years	2-3 years	3-5 years	3-5 years	Semi-permanent	Semi-permanent
	Mechanical loss	2% energy consumption of bearing	2% energy consumption of bearing	Above 3% energy consumption of sliding friction	Dry friction at low speed, high energy consumption	Electromagnetic induction, low energy consumption of bearing	Electromagnetic induction, low energy consumption of bearing
Impeller	Type	Casting 2 or 3 blades	Welding steel or casting aluminum	Aluminum alloy three-dimensional flow impeller	Aluminum alloy three-dimensional flow impeller	Aluminum alloy three-dimensional flow impeller	Aluminum alloy three-dimensional flow impeller
	Service life	5-8 years	10 years	15 years	20 years	20 years	20 years
	Aerodynamic efficiency	Low	Low	Medium	High	High	High
High-speed motor	Motor type	Low-speed asynchronous motor	Low-speed asynchronous motor	Asynchronous ac motor	High-speed permanent magnet motor	Purchased high-speed permanent magnet motor	High-speed permanent magnet motor independently developed
	Transmission type	Belt or coupler	Coupler	Coupler	Direct driving	Direct driving	Direct driving
	Motor efficiency	86%	87%	94%	95%	97%	Above 97%
	Speed control	unavailable	unavailable	unavailable	Precise control of speed	Precise control of speed	Precise control of speed
	Speed control method	There is no speed control system. When motor power and rotation speed are fixed, the air volume is fixed	No speed control system unless the variable frequency motor is replaced and the variable frequency converter is added	Guide vane adjustment, mechanical loss	Intelligent DC speed control system changes the speed of the shaft	Intelligent DC speed control system changes the speed of the shaft	Intelligent DC speed control system changes the speed of the shaft
	Working range	Very small	Very small, it can bebroadenedby adding a frequency converter	Small range of adjustment of air flow and pressure	Wide range of adjustment of air flow and pressure	Wide range of adjustment of air flow and pressure	Wide range of adjustment of air flow and pressure
Installation	Lifting	Need	Need	Need	No need	No need	No need
	Foundation	Need	Need	Need	No need	No need	No need
Maintenance	Lubricant	Check every shift, add regularly, medium cost	Check every shift, add regularly, medium cost	Check every shift, add regularly, high cost	No need	No need	No need
	Quick-wear part	Bearing, gear	Bearing, sealing	Bearing, gear, lubricant pump	Bearing, filter	Air filter	Air filter
	Cost	Low	Medium	High	High, no maintenance in China	Low, poor service timeliness	Low, good service timeliness
Operation	Operation cost	Very high	High	Medium	Low	Very low	Very low
	Investment cost	Very low	Medium	High	High	High	High
Overall efficiency		49%	61%	68%	73%	77%	77%
Overall price		Low	Medium	High (imported blower)	Medium	Very high, 1.3~1.5 times of the domestic	Medium
After-sale maintenance		Short cycle, low cost and high failure rate	Short cycle and high cost	Long maintenance period and high cost	Long maintenance period and high cost	Long maintenance period and high cost	Timely maintenance, independent core components, short maintenance cycle and low cost

【Features and Advantages】