Abstract: “A comparative study of slot –entry hybrid journal bearings performance with different symmetric and asymmetric geometrical configurations has been presented. The research work includes a numerical analysis of full thermo-hydrodynamic non-recessed slot entry journal bearing. The results show the optimum number of slots for each row of double row symmetric configuration and for single row asymmetric case. The results demonstrated that the optimized asymmetric configuration has higher load carrying capacity especially at high eccentricity ratio. The effect of temperature rise on load carrying capacity of the bearing is more pronounced in symmetric than that in asymmetric configuration. Considering the stability of the bearing, the comparative study indicates that asymmetric geometric configurations have better stability compared to symmetric geometric configurations with higher threshold speed margin.”

Keywords: Hybrid Bearing, slot-entry, asymmetric bearing, stability