To effectively overcome the shortcomings of conventional air bearings

a new style squeeze film air bearing is developed according to the ultrasonic wave suspension and piezoelectric effect. The relationship between levitated mass of the squeeze film bearing and influencing parameters for the bending vibration mode is discussed

and the piezoelectric bending transducer

the core part of the squeeze film air bearing

is designed with PbZr

x

Ti

1-x

O

3

(PZT)piezoelectric ceramics and alloy aluminum outer-shell. The first resonance frequency of the transducer and the relationship with radius and thickness of the transducer are evaluated. The piezoelectric transducer with 20 kHz operating frequency meeting the requirements of squeeze film air bearing has been developed. By means of the experimental module a

nd linear leading experimental system of the squeeze film air bearing

the relationship curve about the levitated mass and the levitated gap of the squeeze film bearing is measured and compared to verify the theoretical analysis and the numerical calculation. The squeeze film bearing gets simpler than the static air bearing in the structure and better than the dynamic bearing at the low speed and static state due to the suspending bearing under the action of ultrasound vibration.