The load capacity and static stiffness of aerostatic porous spherical bearing is well smaller than that of hydrostatic porous sphrical bearings,the main cause is that the porosity of porous material chosen is big.

• 气体静压球面轴承的承载能力和静态刚度明显小于液体静压球面轴承,气体静压球面轴承刚度低的主要原因是所用的多孔材料孔隙度较大,即多孔材料的渗透率较大。