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AIR FOIL BEARING

Technology that nurture mankind and nature is what Turbomann aiming. Turbomann is looking beyond technolgy that will last centuries.

Air bearing?

a bearing that lubricates the rotating machine using the surrounding air without using lubricating oil
It is often referred to as an air foil bearing, but its flexibility and the possibility of low-cost bristles are high.

Since the 1970s, foil bearings have been used in air cooling machines (ACMs), the core component of controlling pressure and temperature in cabins, and are the most appropriate
examples of use You can see it. In this application, the foil bearing does not have an oil system, so it does not contaminate the cabin and functions stably for a sufficiently long time
compared to the ball bearing without a fixed maintenance schedule. In addition, the turbo components are rarely damaged in the event of bearing breakage, and the foil biling used
in the Boeing 747 operates for more than 100,000 hours without repair.

Military bearings require higher speed, poor environment and shock resistance, and BLDC motors provide higher efficiency at higher speeds, thereby requiring higher suitable bearings.
In general, oil lubricating bearings cannot provide this performance requirement. As a result, it is known that the foil bearing is optimal to apply a high-speed motor, and structurally
sufficient unalignment, heat, and vibration are required It has the advantage of being able to withstand it.

As a result, air foil bearings are the best solution for high speed motors that require operations in extreme high and high temperatures and high temperatures.

Air Foil Bearing Structure

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Foil bearing history

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Comparison of bearing performance

Sortation	Air Foil Bearing	Magnetic Bearing	Tilting Pad Bearing	Ball Bearing
lubricant	No Use	No Use	Use	Use
Durable/life	Semi-permanent	Semi-permanent	Semi-permanent	Replacement required
Maintenance	None	auxiliary ball Bearing Replacement	5 years 1 Regular inspection	certain day movement Replacemen
Reliability	20	5	1	1
blackout problem	None	auxiliary ball Bearing shorten	Oil pressure drop Possibility of accident have	Oil pressure drop Possibility of accident have
Possibility of error	None(fully mechanical)	control system Malfunctioning possibility	Oil system maintenance faulty Breakage Possibilities have	Oil system maintenance faulty Breakage Possibilities have
System Complexity	simple(fully mechanical)	complex controller Bearing section Electricity inflow bearing winding limitation	Oil system complexity (Pump,Filter, decompression system, Pressure sensor )	Oil system complexity (Pump,Filter,decompression system, Pressure sensor )
Power loss	high speed motor Motor output 0.5% Less than	high speed motor 1% More than	Used with Gear Gear loss included Total Output 10% loss	Used with Gear Gear loss included Total Output 5% loss
A/S cost	1	100	30	30

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