2013年8月12日星期一

Factors that directly affect the bearing vibration


The major causes of bearing vibration caused by vibration and by the nature of the error and the shaft bearing manufacturing line with the seat hole position accuracy caused by vibrations.
     1 bearing the essence of the shape of the vibration is no error bearings, to withstand the load between the ring and the rolling elements and the resilient contact characteristic generated vibration comprising:
     (1), rolling through the vibration cross roller bearings
     (2), the natural vibration of the ferrule. Comprising:
     a, outer ring of the angular moment of inertia inherent vibration system walled cross-roller bearings
     b, outer axial line quality natural vibration
     c, Slewing bearing rings bending natural vibration. thrust cylindrical roller bearings
     (3), the vibration caused by the bearing spring characteristics: axial vibration, radial vibration, bearing the resonances.
     2 bearing manufacturing error caused by vibration.
     Rolling bearings, the outer ring raceway and the rolling surface in the circumferential direction of Chengdu wavy different machining marks - waviness, which is caused by bearing vibration, induced noise and an axis of rotation Imperative eccentric motion occurs extremely important factor. depression formed by machining marks waviness caused vibration, for non-radial clearance of the bearing, or in addition to the other ball bearing outer bearing also occurs when the axial load is applied, in addition, raceway wavenumber waviness a lot of bearing in the radial load imposed also occur. crossed tapered roller bearings
     3 shaft and housing bore radial shape and position accuracy. Shaft and housing bore bad shape and position accuracy, after the installation of its rings bearing deflection will occur, so that the low-frequency vibrations caused by rolling over the bearing surface waviness caused shares yo vibration is also large. and improper operation of the installation process, etc. also affect the bearing vibration causes.

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