According to the working principle of a kind of adjustable hybrid bearing in high speed precision roll grinder, working out the contact force in different contact state. By using the twoway fluidsolid coupling analysis method，the pressure distribution and static analysis of the bearing lubricating film under different oil pressure conditions when the bearing was in state of normal extrusion, ultimate relaxation and limit extrusion，to meet the requirements of the comprehensive test experiment of the domestic highspeed roll grinding head. The results show that with the increase of bearing oil pressure, the oil film pressure of the bearing oil film increases, and the bearing deformation decreases. As the degree of bearing extrusion deepens, the oil film pressure of the bearing increases and the strain increases.As the rotation speed of the spindle increase, the pressure of the bearing oil film increases.