There is a growing need to expand the upper limit of the operating range of compressors for air-conditioning and refrigeration systems. The expansion of the upper limit causes increasing the load or the rotational speed of the journal bearing that supports the shaft of the compressor. On the other hand, the refrigerant is dissolved in the refrigeration oil, and the refrigerant solubility and the viscosity of the refrigeration oil change depending on the temperature and pressure conditions. In the high load and high speed region, it is considered that changes in viscosity due to frictional heat and refrigerant solubility affect bearing characteristics. The authors have so far analytically clarified the effects of friction heat generation and changes in the refrigerant solubility and viscosity on bearing characteristics. In this report, the validity of the analytical model was experimentally verified by evaluating the characteristics of journal bearings in a refrigerant environment, and we obtained experimental results to support the heat generation caused by the change in refrigerant solubility in the analysis model.