Air Bearing new concept useful for mechanical students

1. Welcome
Presentation On Air Bearing
By-
Ketan Shete

2. Intent:-
• Intro.
• Types of bearings.
• Mechanism.
• Benefits/Advantages.
• Disadvantages.
• Applications & Scope.
• Termination.

3. So What is Bearing…..?
A bearing is a machine element that
constrains relative motion to only the
desired motion, and reduces friction
between moving parts.

4. Another Definition:-
An air bearing is a non-contacting system where
a gas film (typically air) acts as the lubricant that
separates the two surfaces in relative motion.

5. Types:-
There are two types of air bearing systems:-
Aerostatic.
Aerodynamic.

6. Mechanism AEROSTATIC :-

7. Externally pressurised: A separate external supply of air is fed
under pressure between the
two surfaces being kept apart.
It is a continuous flow system where pressurised gas from the
source flows through restrictors
into the clearance between the bearing surfaces escaping to the
atmosphere at the outside
edges of the bearing.

8. Mechanism AERODYNAMIC:-
• Self generating: The supporting film is generated by the
relative motion of the two surfaces being kept apart.
• An aerodynamic bearing can be of several types. The design
characteristics differ greatly between journal and axial
bearings and they can suffer problems of instability.

9. Benefits/Advantages:-
1. Greater Precision.
2. High Speed.
3. Increased Tool Life.
4. Improved Surface Finish.
5. Long Bearing Life.
6. Lack of Maintenance.
7. Low Thermal Growth.
8. Large Load Capacity.
9. Reduced Vibration

10. Disadvantages:-
• High geometric accuracy during
manufacturing.
• Clean and dry supply of pressured air.
• High prizing.

11. Applications:-
• Hover Craft-Transport.

12. Application:-
• Uplifting heavy weights-
We can lift up to 5 tons without efforts using
this technology.

13. Application & Scope:-
• Upcoming vehicles will use this technology.

14. Termination:-
• There will be no issue of lifting up much more
heavy loads in future if we use this
technology. Transportation will affect much
more with this technology. Speed will speed &
efficiency up at much extent of transport .