Shaker vibrates the main bearing

Bearing vibrations are mainly due to bearing rotates under the action of the load , causing the deformation vibration of bearings .
  1.1 Vibration bearing rings
  Vibration is essentially a rolling vibration screen bearing of the vibration of the bearing rings , the bearing structure , rigidity , precision manufacturing , installation , and usage

conditions and other factors. If the bearing inner ring raceway has a larger radial corrugations , the inner bearing outer ring rotation will produce radial vibration . Bearing

inner ring will not only cause a corrugated outer radial vibration , but also will cause axial vibration of the outer ring , coal screening machine the bearing will be subjected to axial load the

bearing , the outer ring of the axial relative position of the change, so rotating the inner ring of the bearing outer ring also produced mouth axial vibration shaker at work ,

for high-speed rotation of the bearing , because the ripple caused by the vibration frequency, there may be equal to the rotational frequency of the exciter shaft , which

produce resonance .
  Cage vibration 1.2
  Vibration of the cage , mainly due to the rotation of the bearing retainer and rolling vibrating the vibration generated by the impact on each other . Vibrating screens , the

impact load accompanied by various alternating load , will cause severe vibration of the holder , the vibration is generally believed that " due to the rolling element and the

sliding friction between the cage retainer induced from excited vibration .
  Vibration is mainly produced in the retainer ball bearing and tapered roller bearing in the radial gap is too large , good lubricating properties , shaker exciter shaft

transmission torque fluctuation such circumstances likely to occur.
  1.3 rolling body vibration
  In a large shaker ball bearings and roller bearings , when the bearings mainly take radial load and low-speed rotation , it will produce the whereabouts of rolling vibration .

Trial found that when the bearing radial load and grease in case of poor performance , early operation will hear "click \ Kacha" sound vibration , which was mainly due to the

load zone of rolling after leaving suddenly accelerated and cage collision and vibration emitted sound , this crash is inevitable but will disappear after a period of operation

.
  When the bearing radial shaker operating under impact loads , only a few months of its internal load bearing rolling elements , because the elastic contact with the ferrule

constitutes "springs" which supports the rolling line of action of the radial load generated through periodic oscillations ( and therefore at the center of the vertical shaft to

move or do horizontal movement ) . Especially in the low frequency vibration shaker , the type of vibration is more obvious .
  1.4 Friction Vibration
  Rolling friction vibration mainly refers to abnormal vibration , friction and vibration in general in a large ball bearings prone to using grease lubrication performance

particularly bad fats are more likely . According to the test and observation , bearing friction and vibration generation often has a direct relationship with the oil properties

. When lubricating performance is not good , or dirty , then the friction vibration prone , but also with the bearing outer raceway processing quality , and if this method of

using special precision machining , can be better controlled friction stir .
  Rolling over the vibration is often the result of various types of vibration . Tests showed that the bearing operation under normal circumstances , bearing parts bearing

surface waviness is caused by vibration of the main factors.