As carbon neutrality becomes more important, submersible pump bearings require high sliding properties and long service life in the chemical industry for decarbonizing. In this study, we conducted the journal bearing tests using carbon graphite bearings containing resin material and stainless-steel shaft sleeves in a water environment. When the value of PV (Pressure×Velocity) was 23.5 kg/cm2∙m/s in the pair of the carbon graphite bearing and the shaft sleeve, we measured the temperature of the bearings and motor current during bearing’s shaft rotation. After the tests we observed wear marks on the lower sliding surface of all bearings by using a microscope. In addition, we investigated the pressure distribution of the water lubricant fluid film between the carbon graphite bearings and the shaft sleeve through CAE. The CAE simulation results that the pressure distribution of the water lubrication fluid film changes significantly depending on whether the bearing has a spiral groove.
Koike et al. (Wed,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: