In line with the journal and the bearing angle range, should be scraped off some of the tile surface evenly bump, bump formed between the shallow pit. Bump from the main journal bearing role, concave to store oil, playing the role of lubrication. In this theory, under the guidance of the main installation or repair of ball bearings, are required for fine-tiling to scrape, repeated grinding, so each square centimeter exposed spots 1-2, in 70 ~ 90 ° of evenly distributed within the range. This method of scraping damage to the film formation, with the range of angles in the journal point contact with the tile, storage, and concave formed in the film encounter bumps incurs cut, cut, destroy the integrity of the film, so that the shaft the actual formation of the neck and tile semi-state friction of boundary lubrication, the lubrication is very unfavorable, easy bush-burning, low reliability. Babbitt casting thickness of 12 ~ 15mm or so, it was determined the amount of wear and tear under normal circumstances, each of about 0.13 ~ 0.15mm, while the tile burned a loss of about 0.4 ~ 0.7mm, repair scraping loss of about 0.5 ~ 1.0mm or so (depending on the degree to which it burns), so scrape the tile liner greatly reduce the loss of life.
New method scraping technology:
The first journal with a fine whetstone on the injured parts were polished, will pull the burr has been polished, polished. Tile lining both sides of the tile and then the mouth parts of a larger scratch repair, from top to bottom and gradually reduced, to a depth of 200 ~ 230mm, curved guide the formation of wedge-shaped tank and gradually narrow the gap within the lower range of 30 ° without any scraping research, only a few times with emery cloth to polish the back. Second, is the spherical spherical scraping tile repair, polishing, so that outer sphere to maintain smooth, concave at the base of the inner sphere rotating flexible, played the role of self-aligning. After these three steps will deal with the new tile into the bearing, the heavy load carried in a successful test run, it took only a half of the class time, and achieved satisfactory results.
Other News:
The application of scraping grinding machine bearing new methods
The role of the bearing lubrication
SKF repair technology
Cleaning motor bearings
Magnetic bearings
KF thrust bearing vibration test and fault diagnosis technology application
Rolling bearing damage automatic fault diagnosis
Reduce ring deformation hardening heat treatment method
