Sliding bearing assembly and clearance measurement

Sliding bearing assembly of sliding bearing is a bearing rolling friction characteristics, characteristics of stable, low noise, is a work can bear the heavy load and impact load, according to the different structure form can be divided into one-piece and tiles, etc. （ 1) One-piece sleeve bearing assembly one-piece sleeve bearing alias coupling, also is a kind of way in the sliding bearing is very simple, the key selection pressure into the assembly and thump way, unique place to choose hot pack, most of the coupling is made of copper or iron assembly time carefully, can use the mallet or hammer head cushion block on the way assembly, clearance fit with a punch press it into a standard tolerance is very big. Regardless of type, or press it into must avoid skew, after assembly, oil tank and oil inlet should be at the specified location. Deformation of the bearing after the assembly, should carry out internal thread repair, specifications can smaller cutter cut, specifications and a lot of scrape research. Also pay attention to manipulate the interaction with axial clearance within the category of dimensional tolerance, to avoid coupling work when rotating, coupling and shell surface is equipped with a spring or the place of screw. Because of the casing and coupling is not the same as the raw material strength punching, very easy to make soft twist drill on raw materials, the solution: one is to sample before punching on hard materials punching machine, 2 it is to use short twist drill, to enhance the degree of the twist drill steel when punching. (1) the assembly of bearing and the bearing body around two bearing and the bearing hole of the body must good touch, such as is not in conformity with the provisions for thick wall tube bearing bush bearing hole for the standard body, blow grind bearing bush back, also should with bearing on either side of the ladder against the bearing body on both sides. Thick wall tile if the bearing shell split than points in the surface of the bearing is higher than 0. Mm can up and down, not necessary. (2) the bearing is installed in the bearing body regardless of the axial and radial, are not allowed to have deviation, generally use the ladder on both sides of the bearing bush to stop precision positioning or circlip precise positioning. (3) the bearing bush faced to open four commonly used match between shaft research points, generally all is scraping the lower bearing first, then blow on bearing, in order to better improve the work efficiency in scraping the lower bearing is not fitted with bearing cover, and the current bearing point contact base in accordance with regulations, then the bearing shell and the top clamping, scraping the research on the bearing shell, further adjust bearing shell under point contact. Shaft tight pine level when faced with the scraping grinds the ascension of frequency, according to the change the gasket alternated. After the bearing cap and tighten, shaft can easily rotate without significant gaps, contacts within the rules is faced with. (4) the precise measurement of the bearing clearance of the size of the bearing clearance can be adjusted according to the split of gasket, also can be obtained according to immediately repair the scraping bearing shell. Precise measurement method, the general selection pressure bearing clearance lead to take a few more than bearing clearance of galvanized iron wire diameter, on the motor shaft and the surface, then tightened nuts make split CARDS tight, again turn on nut, remove the bearing cover, carefully remove the squeezed bian galvanized iron wire, each take a vernier caliper to its thickness measurement, based on the average of its thickness of galvanized iron wire can understand the bearing clearance. General bearing clearance should be 1 the diameter of the shaft. 5‰- 2. 5‰（ mm） , take a smaller diameter is large gap value. Such as is 60 mm shaft diameter bearing clearance should be 0. 09 - 0. Among the 15 mm. The above is the content of the author to share today, want to learn more bearing small knowledge check bearing's official website.