Note: ① When the mating surfaces of two mating parts are a set of guide rails of different widths, the inspection shall be carried out according to the specified number of points of the wide guide rail.
② For the working surfaces of guide rails and bearings with small forces and unimportant, the lowest point failure within the 25mmX25mm area shall not be less than half of the specified number of points.
bolt forging machine Sliding guide rails, bearings, sleeves, etc. processed by precision planing, grinding or other methods shall be inspected for contact by coloring method. The contact shall be uniform. bolt former The contact area shall not be less than 70% of the axial length of the bearing, sleeve and the full length of the guide rail, and shall not be less than 50% of the width of the guide rail.