According to the design staff of FAG bearings and bearing-related causes of bearing temperature is too high: quality does not meet the requirements, or modification of lubricating oil, lubricating oil viscosity is too high; bodies fitted too tight (insufficient clearance), stainless steel bearing Assembly too tight; housing washer on the shaft or internal rotation; load too large; fragmentation of FAG bearings, and so on.
FAG bearings allowed light running noise at work, if the sound is too loud or abnormal noise or impact sound, then bearing is faulty.
FAG bearing the causes of noise are more complex, one is the inner and outer rings mating surfaces of the bearing wear. Due to the wear, damaged bearing and shell, stainless steel bearings and shaft meet relationship causes the axis deviates from the correct location, noise resulting from the axis in high-speed motion. When you FAG bearing fatigue, its surface metal flake, also bearing radial clearance increases the noise. In addition, FAG bearing lubrication inadequate formation of dry friction and bearings broken produces abnormal noises. FAG bearing wear after loosening, cage loose damage, would also have abnormal noise of bearing failures.
1, tile surface corrosion: spectral analysis found non-ferrous metal elements concentration exception; iron spectrum appears in a number of non-ferrous metal components of sub-micrometer-diameter wear particles; lubricant excessive moisture, excessive acid.
2, axis, surface of neck injury: ferrography is cutting abrasive or black iron oxide particles, metal surface temper.
3, Journal of surface corrosion: spectral analysis of iron concentrations found exceptions, many of ferrographic iron composition of submicron particles, lubricant excessive moisture or excessive acid.
4, surface injury: iron found in the spectrum of cutting abrasive, abrasive compositions for non-ferrous metals.
5, w back fretting wear: spectral analysis of iron concentrations found exceptions, many of ferrographic submicron wear particles of iron components, lubricants water and acid value exception.
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