Different parameters applicable to journal bearings operating under mixed lubrication conditions have been identified. These parameters are the minimum eccentricity ratio corresponding to the onset of mixed lubrication, the range of mixed lubrication and the maximum probability of asperity interaction. Salient features pertaining to these parameters have been discussed. A numerical method for computation of the pressure distribution under mixed lubrication conditions considering the roughness profile of peak heights has been presented. The results of the analytical work have been illustrated using experimental data. © 1993.