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This paper presents a simple, working and verified design procedure for the bearing bush for a 6" water-cooled submersible motor. The paper shows the relation between eccentricity ratios, the limit for stable operation of a bearing bush system. Once the fluid film pressure is found out then load carrying capacity will have to be calculated. The power rating, speed, and weight of rotor must be known in order to estimate the torque and finally, we will get calculated diameter of the journal. From the electrical consideration, the paper shows how the useful torque and useful force can be referred in order to establish journal diameter. This simplified procedure presented in this paper will help the manufacturers in designing correct size of bearing bush for a specific motor. The resulting dimensions of bearing bush can be considered for the to generate a 3D cad model in order to conduct the FSI (Fluid Structure interaction) analysis.