The journal rubs against the bearing surface.
The bridge across the track or on the shelf, the best frame is bearing surface of leg link on the standard level measured at both ends of the bearing surface on the trolley track.
Counts by the experiment indicated that, the bearing expiration as a result of the bearing surface flaw which in the bearing expiration form, which causes the crack, the crack creates to reach 65%.
For small male and female joints care should be taken in the use of these dimensions to insure that the inside diameter of fitting or pipe is small enough to permit sufficient bearing surface to prevent the crushing of the gasket.
Hardfaced seating surfaces, large diameter hinge pins, and corrosion resistant bearing surfaces help lengthen operating life in tough surfaces.
