This paper presents the results of numerical solutions modified by Reynolds equa-tion of laminar unsteady lubrication of a cylindrical slide journal bearing. The particu-lar solutions are limited to isothermal models of bearing with infinite length lubrication by newtonian oil with constant dynamic viscosity. The disturbances are related with unsteady velocity of oil flow on the sleeve and on the journal. The results are shown in the diagram of hydrodynamic pressure in the dimensionless form in time intervals of displacement duration.