Passive magnetic bearings significantly increase the reliability of machines and mechanisms by unloading traditional tribomechanical systems and ensuring contactless stabilization of moving parts in friction units. One of the most common engineering approaches to targeted designing of magnetic bearings is the magnetic equivalent circuit method. It is hampered by complex calculating of the magnetic resistance of separatecircuit sections with a complex geometry of magnetic surfaces. The paper proposes a method that combines the analytical method of a magnetic equivalent circuit and an experimental method of modeling in a liquid conductive medium. The authors used the energy method when constructing an analytical model for calculating magnetostatic forces that determine the rigidity and load-bearing capacity of a magnetopassive bearing. They used the experimental method of modeling in an electrolytic bath to establish the unknown parameters for calculations. An example of practical application of the modeling technique involves a thrust passive magnetic bearing with a complex geometry of magnetic circuit surfaces. The field in the bearing magnetic system was modeled on a wedge-shaped model in an inclined electrolytic bath. The authors compared the results of modeling the power characteristics of the bearings obtained using complex modeling with similar dependencies obtained on full-scale samples. The paper shows that the modeling results agree with the results of full-scale tests with an accuracy of up to 7%. The proposed modeling method can be used in developing and studying new magnetic supports, couplings, springs with complex geometry of magnetic circuit surfaces, which are difficult to calculate analytically.