In consideration of the whirling motion of the floating-ring

the distribution of the oil pressure of the outer squeeze film and the inner squeeze film was studied in this paper. Based on Hirs'bulk flow theory

Moody' frication factor equation and the generalized incompressible Reynolds equation

the transient governing equations of the inner and the outer squeeze film and the equation of the motion of the floating-ring were set up. Using a numerical example

the relationship between the whirling motion of the floating ring and the distribution of the oil pressure was discussed. The result shows that the procession radius decreases as the eccentricity of the rotor increases

and the positive oil pressure zone moves in circumferential direction.