Before revision: Strictly speaking, the bearing area refers to the area of the screw head that directly bears on the part being fastened.. For a cylindrical bearing it is the projected area perpendicular to the applied force.. On a spring the bearing area refers to the amount of area on the top or bottom surface of the spring in contact with the constraining part..
After revision: The ways of machine tools, such as dovetail slides, box ways, prismatic ways, and other types of machine slide are also bearing surfaces.Strictly speaking, the bearing area refers to the area of the screw head that directly bears on the part being fastened.. For a cylindrical bearing it is the projected area perpendicular to the applied force.. On a spring the bearing area refers to the amount of area on the top or bottom surface of the spring in contact with the constraining part..