Scraping before research, carefully check the shaft neck whether smooth, whether to have rust, bruising, defects, such as should first try to eliminate a; Then, check the shaft neck and axis of contact, inspection method, trunnion painted in a thin layer of display agent (such as red DanFen, red qian oil), will then shaft neck installed in bearings inside, with the hand to the positive and negative direction two or three turn, will shaft take out, check on bearing the distribution of the shaded, if shaded distribution or don't turn normal move, can blow to grind.

Blow grind, should according to conditions and take the first light, blow after heavy weight light, to blow a big a small principle. The first few times, hand can heavier, more away some metal, in order to quickly achieved the good {TodayHot} contact. When the contact area achieve 50% when, should blow gently. Every blow out a times, tile surface wipe, again will display the agent in the shaft with neck check check, again according to the contact situation developed scraping, until meet the technical requirements so far. Blow grind using show inspection agent, but to the contact point high requirements of precision bearings, blew the final stage of the research can not use the display agent. Because, after besmear display agent, bearings shaded is too big, not actual contact judgment. At this time, but will shaft neck wipe, direct put on bearing checking in, and then take out shaft, it can be seen that the window of the bearings, namely for the contact point.
 
Again to window to blow grind, meet the technical requirements until now.
Blow grind, should not only make the contact point meet the technical requirements, but also make lateral clearance and contact Angle to achieve technical requirements. General first inquiry the contact point, also take care of contact Angle, and finally to scrape the gap. But, contact with the contact part of should not have obvious limits, fingers wipe bearing surface, should have no idea that trace.
 
Open to oil by experience, but mainly master principle:

1, lubricating oil pressure from the oil film bearing in minimum input;
 
2, oil in the area open bearing, otherwise, it will reduce the oil film bearing ability;
 
3 oil, axial can't open, in order to avoid the oil at the end of the loss from the oil;
 
4, horizontal installation bearing grease groove open and a half weeks, don't extend to load area, the entire week should be near the bearing grease groove open at the end of the place.
In addition, in the bush into the top oil hole, can be JinYou hole groove around for the center, the open width and aperture equal grease groove, shape can adopt "one" glyph,... "glyph," king "glyph, etc.




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