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PFI Quality : 100% Noise & Vibration Testing

Every PFI ball bearing is electronically tested for noise and vibration according to ANSI/AFBMA Standard 13-1987. Our testing process allows us to check for unwanted noise in the full sound frequency range:

  Nominal Low Cut Off Frequency (Hz) Nominal High Cut Off Frequency (Hz)
Low Band 50 300
Medium Band 300 1,800
High Band 1,800 10,000