FAG bearings shown in the use of its strong regularities, and repeatability is very good. Normal quality bearings when used at the beginning, vibration and noise are small, but some scattered spectrum, amplitude is small, probably due to some defects in the manufacturing process, such as Burr on the surface.
Movement after a period of time, to maintain a certain level of vibration and noise, spectrum is single, only Yi、erbei. Very rare more than three times the frequency spectrum, bearing condition is very stable, entered a period of stability.
Continue to run access using late, FAG bearing vibration and noise starts to build, sometimes appear abnormal noise, vibration increases more slowly, however, at this time, bearing kurtosis value suddenly reaches a certain value. In our view, when the bearing is characterized by early failures.
(1) clean bearing related components;
(2) the seizure of bearing-related components;
(3) installation;
(4) bearing seizure after installation;
(5) supply smoothing agent.
Rolling bearings should be installed according to the bearing structure, dimensions and bearing components combined with nature may be, pressure should be directly added to the tight fit on the ferrule end face, passing through the rolling pressure bearing installation use the following method:
Comprehensive General and axis of thrust bearing for transition fit, General of the seat and the housing bore for clearance fit, so the bearings are easier to install, bi-directional thrust bearing shaft shall be fixed on an axis to prevent relative to the shaft. FAG bearings installation method, under normal circumstances is rotating, and tie to win match of the inner ring and shaft, the bearing outer ring and housing combined with clearance fit.
Bearing within ring and axis make tight tie, outer ring and bearing block hole is more pine tie Shi, available pressure machine will bearing first pressure loaded in axis Shang, then will axis together with bearing together loaded into bearing block hole within, pressure loaded Shi in bearing within ring end surface Shang, pad a soft metal do of Assembly casing (copper or soft steel), Assembly casing of diameter should than axis neck diameter slightly large, od diameter should than bearing within ring retaining side slightly small, so as not to pressure in keep frame Shang.
Have grease lubrication of rolling bearings and double sided oil seals or shields, FAG bearings without cleaning before installation of the seals. Checking the size and finishing of related parts.