Date: 2013-08-20

Bearing noise test methods are described

Rolling bearing exterior indentation or if cracked, corroded, would attack like rivet rivets periodic vibration and noise, the cycle can be fixed but most must correspond with the speed, scars are continuing attacks on the channel, scars on the ball disappeared, and this premise installation and smooth the noise but without a necessary change.
Such moderation approach to noise: device not tapping bearings, bearings and shaft assembly after mount housings to avoid bearing in oblique; inventory to avoid corrosion of bearings and transport to avoid vibration and shock to use smooth fat for high viscosity.
Rolling bearings with dust and other foreign bodies, will attack non-periodic oscillation and the so-called dust, vibration and noise of the large and variable, and with or without.
Moderation approach to dust: cleaning approaches to improve the bearing, bearings, shafts, holes before installation, as well as match part all stringent clean Shen Qing; out foreign bodies smooth agent; improve bearing seal; preventing impure or embedded with foreign objects using information the plastic stick.
Selection errors, lack of lubricant or lubricant ageing attack induration, and have incurred bearing vibration and noise, this noise and no rules. This situation, as long as the selection of appropriate smoothing agents, adjusting its smooth-dose extended smoothing agent for change determination and application life cycle.
First, check bearing vibration at work from the indentation, corrosion, cracking, spalling, wear can reflect in bearing vibration measurement, bearing vibration of bearing damage is very sensitive, therefore, through the use of special measuring bearing vibration (frequency Analyzer) vibration size can be measured through frequency not infer exceptions in specific situations. Due to the conditions of use of measured values for bearings or sensor installation location different is required prior to analysis and comparison of measurement values of each machine are determined their criteria.
Second, check bearings rolling sound because bearings even with minor injuries such as split, also is making an abnormal sound and irregular sound, so logging can be distinguished using acoustic logging, in the operation of checking bearing size and sound quality of the scroll to, play the role of prevention in advance.
Third, to check the bearings rotate temperature if using oil hole can directly measure the bearing outer ring temperature, is more appropriate. Under normal circumstances, the bearing temperature, General bearing outside of room temperature can be based on speculation. If lubricated, install suitable, the bearing temperature dramatically increased, abnormal high temperature occurs, in which case you must stop and take the necessary precautions.

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