The fact that even parallel slide guideways, which structurally are not believed to form macro hydrodynamic wedges, have a diminishing coefficient of friction, as do journal bearings, and shift towards hydrodynamic lubrication as speed increases is well known. Researchers have tried to explain this property from a variety of angles, and the preceding report discussed experiments that clarified the effect of oil grooves of slide guideways. The results of the study that used a ring-shaped turning slide guideway indicated that even in parallel slide guideways with oil grooves there is a hydrodynamic lubrication mechanism. The present report uses calculation to study the mechanism that causes load-carrying capacity that results from the film pressure at the inlet and elastic deformation of the slide guideway. The results make it clear that because of the isoviscous-EHL mechanism (which is a combination of viscous-drag pressure from the oil groove to the slide guideway, the minute wedge pressure resulting from the micro-slant of the two guideway ends, and the elastic deformation of the slide guideway) sufficient load-bearing capacity is generated.