2012年9月1日星期六

Detect bearings abnormal sound approach


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Detection bearing abnormal sound, there are two ways. One is based on acoustic noise detection method, another is a detection method based on vibration.buy bearing
(A), the noise de tection method: It is in the basic noise of less than 20dB silencer environment, the use of high-quality microphone extract bearing sound pressure signals to a

certain distance and direction, and wherein the abnormal sound component is extracted by a certain analytical method, direct measurement of abnormal sound.
(B), vibration detection method: abnormal sound indirect detection method can be divided into qualitative detection and quantitative parameter detection method. Which

qualitative detection method is divided into the listener abnormal sound and the observed vibration waveform method. Quantitative the parameters detection method is related with

abnormal sound measured bearing vibration signal measured parameter values such as: vibration peak, crest factor evaluation the bearing of abnormal sound.roller ball bearing
(C) measuring bearing abnormal sound m easuring instruments: measurement measuring instruments bearing abnormal sound a lot, for example: Hangzhou Bearing Test & Research Center

BANT-1 bearing abnormal sound monitors; Shanghai Institute of Bearing Technology S092 bearing vibration (abnormal sound) measuring instrument; Luoyang Bearing Research

Institute, Dalian bearing Instrument jointly developed by S0910-â…¢. These bearing measuring instrument can measure bearing vibration RMS can measure reflects bearing abnormal

sound parameters peak, crest factor and number of pulses.ball thrust bearing


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