Why use an Air Bearing?


Precision of air bearing manufacture


bearing clearance

Bearing Systems Comparison Table

Parameter
Air Bearing Aerostatic
Air Bearing Aerodynamic
Oil-bearing
hydrodynamic
Ball bearing
ang. contact
Accuracy of rotation
Excellent
Excellent
Good
Fair
Speed <1,000 rpm
Excellent
Poor
Excellent
Fair
<1,000 -
60,000 rpm
Excellent
Excellent
Fair
Good
>60,000 rpm
Excellent
Excellent
Poor
Poor
Low vibration
Excellent
Excellent
Excellent
Fair
Shock resistance
Good
Fair
Excellent
Good
Frequent stop/starts
Excellent
Good
Excellent
Good
Low starting torque
Excellent
Fair
Good
Good
Long lifetime
(>20,000 hours)
Excellent
Good
Excellent
Poor
Wide Temperature Range
Excellent
Good
Fair
Fair
Contamination to surroundings
Good
Excellent
Poor
Poor
Resistance to dust ingress
Excellent
Fair
Good
Good
High axial/radial loads
Good
Fair
Excellent
Excellent
High axial/radial stiffness
Excellent
Fair
Excellent
Good
Small space envelope
Fair
Good
Good
Excellent
Low heat generation
Good
Good
Poor
Good
Run in partial vacuum
Fair
Poor
Fair
Fair
Low running costs
Fair
Excellent
Good
Good