Abstract: The research on isothermal and flooded elastohydrodynamic lubrication of the roller contacts has shown that the finite cylindrical roller profiled by an engineering logarithmic will provide with good EHL properties. Under light loading, it is of EHL features of point contacts with a large ellipticity ratio. The minimum film thickness appears in the central part of the roller contacts. The pressure and the shape of the film distribute much uniformly in axial direction. With the increase of the load, the end closure is displayed and the oil pressure rises sharply at the ends. The seal action formed by the end closure makes the film thickness a little bit larger. With the load increasing, the minimum film thickness is transferred from the central to the ends and the value is reduced rapidly. With the increase of the speed, the end closure becomes much serious.