How to carry out the sliding bearing blow grind

Scraping the inquiry before, should check carefully whether the journal is smooth, whether has the defects such as rust, dent, if any should be managed to eliminate; Then, check the contact condition of shaft neck and shaft, check method, coated with a thin layer on the diameter of axle show agent ( Such as lead red, red qian oil, etc. ) , and then can to journal bearings, turn positive and negative direction two or three with the hand, remove shaft, check the distribution of point bearing on shaded, if the color distribution is not normal or simply turn, to start research. Study, should be adopted according to the situation, after the first heavy light, heavy light, the principle of scraping stay small. Started a few times, the hand can be heavier, scrape more metal, in order to quickly achieve a good { TodayHot} The contact. When the contact area of 50%, you should blow gently. Every finished, tile surface rub-up, again will show the agent) on the shaft neck check check, according to contact condition for scraping the inquiry again, until it is conform to the technical requirements. Blow grind check can be used to display, but to require very high precision bearing contact points, the last stage of the research cannot be used display agent. Because, after besmear according to agent, coloring point on the bearing is too big, not easy to determine the actual contact. At this point, the journal can be wipe, directly on bearing inner check, and then remove the shaft, you can see the window on the bearing, is the contact point. Bright spot for scraping the inquiry again, until it is conform to the technical requirements. Study, not only conform to the technical requirements to make contact, but also make the lateral clearance and contact Angle to meet the technical requirements. General research first point of contact, and at the same time to take care of the contact Angle, and then scrape side clearance. However, contact and non-contact part should not have clear boundaries, wipe the surface of the bearing with finger, should notice no trace. Open the tank will depend on experience, but mainly to master principle: 1, lubricating oil from the oil film pressure minimum input bearing; 2, oil groove in the bearing section, otherwise it will decrease the carrying capacity of oil film; 3, tank axial cannot be opened, so as to avoid huge loss of oil from the oil groove end; 4, horizontal bearing oil groove and a half weeks, do not extend to the bearing area, the week tank should be open in the near the end of bearing. In addition, on the top of the bearing into the oil hole, groove around the oil hole at the center, width and aperture equal oil groove, shape can be 'one' glyph, 'x' glyph, 'the king' glyph, etc.