Asset Condition Management Use Ultrasound Crest Factor to Precisely Predict Bearing Failures Asset Condition ManagementUltrasound Testing Trend overall dB-RMS levels to know your bearing is getting louder. Trend dB-Peak to know your bearing is becoming unstable. Then compare the dB-Peak to the dB-RMS to see your bearing's Crest Factor (CF).Hear More Tip Provided By: