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Method and apparatus for diagnosing residual life of rolling element bearing

  • US 20050246150A1
  • Filed: 05/28/2003
  • Published: 11/03/2005
  • Est. Priority Date: 05/31/2002
  • Status: Active Grant
First Claim
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1. A method of predicting residual service life for rolling bearings comprised of the following:

  • a means of obtaining fundamental data that uses a testing device to obtain data regarding the relationship for rolling bearings (3) of wear particle penetration levels to vibration levels and service life, and to obtain data regarding the relationship, for rolling bearings (3), of lubricant degradation levels to vibration levels and service life;

    a means of measurement where an accelerometer (4) is used to obtain vibration signals of diagnostic rolling bearings (3) residing on mechanical rotating devices (1, 2), such as pumps and fans, for the purpose of measuring signals in resonant frequency bands only detectable at extremely high levels of sensitivity; and

    a means of prediction that uses readings obtained via said means of measurement and data obtained via said means of obtaining fundamental data to predict, for said diagnostic rolling bearings (3), wear particle penetration levels and lubricant degradation levels, and to calculate residual service life for said diagnostic rolling bearings (3).

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