Check the flanged ball bearing quality of four points

First, turn tone with a stethoscope to check flanged ball bearing, a metallic noise, strong noise, irregular, abnormal sound. Due to poor lubrication, shaft or housing poor accuracy, bearing damage, foreign intrusion etc..

Second, the bearing temperature, generally according to the external temperature of the bearing seat to speculate. But the direct measurement of the bearing outer ring with oil hole temperature more accurately. Thrust Ball Bearings temperature, from a running start rising, usually 1~2 hours after the temperature stability. Bad if the bearings are mounted, the temperature will rise sharply, abnormal high temperature. The reason such as excessive lubricant, the self aligning ball bearing clearance is too small, poor installation, sealing device too much friction. High speed rotating occasions, lubrication structure, choice is also the cause of the error.
Guide roller, guide, slider, linear bearings, miniature ball bearings series of deep groove ball bearing series needle roller (roller) bearings, thrust ball bearings

Third, small machinery can be rotated by hand, to confirm whether the rotation is smooth. Check the project caused by foreign body, scars, indentation running sluggish, due to poor installation, mounting process arising out of the bad moment is not stable, because the clearance is too small, installation error, sealing caused by friction force is too large and so on. If there is no anomaly can begin power operation.

Fourth, large machinery can not be manually rotated, so the no-load starting immediately after power cut, mechanical idling, check whether the vibration, noise, rotating parts are in contact and so on, confirmed no abnormal, into the dynamic operation.