A three-part oil scraper ring, comprising an upper scraper ring, a lower scraper ring, wherein the scraper rings (24, 26) are held at a distance by an expander spring, which is formed as an MF spring, and are pressed radially to the outside, wherein the upper scraper ring comprises a ring body comprising an upper flank, a lower flank, a ring inner surface and a ring outer surface, which has a ring outer contour in section in the axial direction, wherein the ring body has a height, which, viewed in the axial direction, corresponds to the greatest distance of the upper flank to the lower flank, wherein the ring outer contour forms a running surface, which has a pivot point and a radius of curvature, which is smaller than the height of the upper scraper ring by a factor between 1.5 to 6, characterized in that at the pivot point, the upper scraper ring has a curvature, which transitions steadily and smoothly into the lower flank and forms a tangent to the radius of curvature, wherein the curvature extends over more than 90° so that the pivot point of the ring outer contour of the running surface is formed by the curvature, whereby the pivot point is located at the distance above the lower flank, the curvature then transitions steadily and smoothly into a straight section, which, in turn, transitions into an upper radius of curvature (Ro), which is tangential to the tangential section as well as to the line of intersection of the upper flank, wherein the upper radius of curvature (Ro) is smaller than the radius of curvature at the running surface, wherein in the cross section of the upper scraper ring, the center points of the radius of curvature at the running surface and of the upper radius of curvature (Ro) lie on a straight line, which lies parallel to an axial direction of the upper scraper ring, and wherein the lower scraper ring has a pivot point, wherein the lower scraper ring is embodied in a symmetrically spherical manner in the region of the pivot point, the pivot point is located at an axial height between 47 and 54% or between 55 and 75% of a height of the lower scraper ring, starting at a lower flank of the lower scraper ring, and a radius of curvature at the pivot point of the lower scraper ring is between 0.05 and 0.15 mm. wherein the upper scraper ring comprises a ring body comprising an upper flank, a lower flank, a ring inner surface and a ring outer surface, which has a ring outer contour in section in the axial direction, an upper flank, a lower flank, a ring inner surface and a ring outer surface, which has a ring outer contour in section in the axial direction, wherein the ring body has a height, which, viewed in the axial direction, corresponds to the greatest distance of the upper flank to the lower flank, wherein the ring outer contour forms a running surface, which has a pivot point and a radius of curvature, which is smaller than the height of the upper scraper ring by a factor between 1.5 to 6, characterized in that at the pivot point, the upper scraper ring has a curvature, which transitions steadily and smoothly into the lower flank and forms a tangent to the radius of curvature, wherein the curvature extends over more than 90° so that the pivot point of the ring outer contour of the running surface is formed by the curvature, whereby the pivot point is located at the distance above the lower flank, the curvature then transitions steadily and smoothly into a straight section, which, in turn, transitions into an upper radius of curvature (Ro), which is tangential to the tangential section as well as to the line of intersection of the upper flank, wherein the upper radius of curvature (Ro) is smaller than the radius of curvature at the running surface, wherein in the cross section of the upper scraper ring, the center points of the radius of curvature at the running surface and of the upper radius of curvature (Ro) lie on a straight line, which lies parallel to an axial direction of the upper scraper ring, and wherein the lower scraper ring has a pivot point, wherein the lower scraper ring is embodied in a symmetrically spherical manner in the region of the pivot point, the pivot point is located at an axial height between 47 and 54% or between 55 and 75% of a height of the lower scraper ring, starting at a lower flank of the lower scraper ring, and a radius of curvature at the pivot point of the lower scraper ring is between 0.05 and 0.15 mm.