When your ultrasound technology reports an increase in static baseline that is 8-10 dBµV louder than an established baseline. Knowing that 6 dBµV over baseline represents a two times increase in frictional levels, 8-10 dBµV is logarithmically and logically an intelligent point to create a re-lubrication interval alarm.

Bearings need grease to reduce the frictional forces between the surfaces of the bearing's rolling elements.

New grease needs to be added when the bearing's frictional forces increase beyond a set quantifiable level.

Tip Provided by, Allan Rienstra, SDT Ultrasound Solutions