Air bearings use a thin film of pressurized gas to provide a low friction interface between surfaces. There are two main types: aerostatic bearings, which can lift loads vertically up to 3 inches; and aerodynamic bearings, which can lift loads just enough to float them horizontally and can move loads over 100 tons. Air bearings have applications in cutting and medical equipment due to their advantages of low friction, no lubrication needs, and long life. However, they require precise manufacturing and a clean supply of compressed air, and tend to be more expensive than other bearing types.

1. AIR BEARINGS
Boya Manasa
19D45A0313

2. CONTENT
 Introduction
 Working principle
 Types of air bearings
 Applications
 Advantages
 Disadvantages
 conclusion

3. Introduction
What is air bearing?
Air bearings are fluid bearings that use
a thin film of pressurized gas to provide
a low friction load-bearing interface
between surfaces.

4. Why air bearings?
1. Friction
Less friction as compared to rolling and plain bearings
2. Wearibility
Materials used in other bearing eventually gets used up with time, which
requires replacement.
3. Lubrication
Unlike other bearings, no lubrication is required.

5. Types of air bearings
Aerostatic Aerodynamic

6. Aerostatic Bearing(A-Type)
 A-type air bearings are a high-lifted bearings which, causes the load to lift
vertically away from the floor surface as much as 3 inches.
 These bearings are used when vertical lift is required before floating the load
away.

7. Aerodynamic Bearing(B-Type)
 B-type air bearings causes their loads to lift away from floor surface just
enough to allow them to be floated off to the destination.
 B-type air bearings when use in series of four or more are capable of lifting
and moving loads of up to 100 tonnes and beyond.

8. Applications
Air bearing cutting engine Air bearing doppler engine

9. Advantages
 Low friction
 No lubrication required.
 Low heat generation.
 Long life and long lasting.
 Maintainance free.

10. Disadvantages
 High geometry accuracy during manufacturing.
 Clean and dry supply of pressurized air.
 High pricing.

11. Conclusion
By stating the above points we can say that air bearings is the
perfect alternative for carrying and transporting heavy loads.

12. Thank you