Method for judging machine failure from "sound"

I have explored from practice to judge the malfunction of the machine by "sound". 1. Judging the fault according to the cause of the sound of the machine (1) A sound produced by the impact of two parts in the impact sound machine. Features: dull, deep and powerful. When repairing, install unqualified bearings due to low precision of bearing rolling elements or inner and outer ring surfaces

Floor Drain Strainer

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