The experts how to solve the problem of bearing noise!

Solve the problem of bearing noise, need to know is the cause of the noise, a variety of reasons cause bearing made a big noise, depending on is just install or run a long time to cause bearing noise?Such as bearing installation soon usually causes noises is clearance is too large;Bearing is a long time will rust or scar operation ead to noises, different causes to targeted to solve is the best.

The following are the steps solve the problem of bearing noise

First, the scars and its control method 

Rolling bearings Oil Sintered Bearing of surface crack, indentation, or rust, if any, will occur like rivet rivet cyclical vibration and noise, the cycle may be fixed but mostly, the orresponding relationship between speed into a scar on the channel occurred in a row, scars on the ball, and the noise with the installation and lubrication condition and have certain changes.

This kind of noise control methods are: installation not knock when the bearings, bearing and shaft assembly after a load bearing seat when prevent bearing oblique;Inventory to prevent rusting bearing and transport to prevent impact vibration;Using high viscosity of grease.

Second, dust and its control method

Rolling bearing Ball Cage Retainer with dust and other foreign bodies, the cyclical vibration will happen and the so-called dust, the size of its vibration and noise, and with or without.

Dust acoustic control methods are: to improve the bearing cleaning method, before installation to bearing, shaft and hole and matching parts all clear Shen Jiejing strictly;Remove the foreign body in lubricant;To improve the bearing seal;Avoid the use of material is not pure plastic cage or foreign bodies are embedded.

Third, lubrication factors caused by noise and its countermeasures

Lubricant selection error and lack of lubricant degradation and induration, can lead to bearing vibration and noise, and the noise without certain regularity.In this case, only to choose suitable lubricant, adjust its lubrication dose, prolong the service life of lubricant and reasonable replacement cycle.

Fourth, the noise is related to the host and its countermeasures

The noise is not caused by bearing, thus the single it is useless to look for reasons from the aspects of bearing, to host a comprehensive attention, when it is necessary to improve the performance of the host.The main narrative in the motor common hum and rack resonant sound.

(1) the hum of the motor and its countermeasures

The motor shaft axial vibration will cause a lot of high frequency noise - hum, its frequency and axial vibration frequency is the same, can is a constant change.Hum 

way to prevent and prevent axial vibration method is the same.

(2) bearing frame resonance sound and its countermeasures

The inherent vibration caused by axial bearing outer ring quality department of axial bending vibration mode, then called resonant acoustic noise.Increase the preload method can improve the quality of outer ring of the axial natural frequency, resonance condition, reduce the noise.