Rolling Element Bearing Vibration Fault Frequency Calculator BPFO BPFI BSF FTF

Step 1: Search & Select Bearing Number

Step 1: Select Bearing Number	* You must login to activate this converter. Please Sign-Up or Sign-In Here.

Data from Database for Bearing # :

Bearing Number:
Bearing Type:
Number of Balls/Rolling Elements:
Ball Diameter:
Pitch Diameter:
Contact Angle (PHI):
Ball Passing Frequency Outer Race (BPFO):	Orders
Ball Passing Frequency Inner Race (BPFI):	Orders
Fundemental Train Frequency (FTF)	Orders
Ball Spin Frequency (BSF):	Orders

Step 2: Enter Machine Running Speed (RPM) Then Click Button to Generate Bearing Frequencies in Hz -

Step 2: Enter Machine Running Speed (RPM):
(Click Button and/or Hit Enter to Generate Frequencies)

Rolling Element Bearing Fault Frequencies (Hz)

1X - Machine Running Speed	Hz
BPFO - Ball Passing Frequency of Outer Race	Hz
BPFI - Ball Passing Frequency of Inner Race	Hz
FTF - Fundemental Train Frequency	Hz
BSF - Ball Sping Frequency	Hz

Explanation:

Faults in any of the four bearing components will generate specific frequencies dependent upon the bearing geometry and rotating speed. These four fault frequencies are commonly termed: BPFO - Ball Pass Frequency, Outer Race BPFI - Ball Pass Frequency, Inner Race BSF - Ball Spin Frequency FTF - Fundamental Train Frequency.

In this calculator, the bearing geometries for more than 2,700 bearings including: SKF, NTN, Cooper, and Dodge are available. Simply select the bearing from the database, then enter the machine running speed, to generate the desired fault frequencies.

RITEC-Rolling-Element-Bearing-Frequency-Database

Disclaimer:

- All Cooper Bearing Numbers included in our database are in Metric designation.

- Using a different manufacturers' data, for the same bearing number, may yield an errouneous value.

- RITEC Bearing Frequency Calculator is a free tool provided by RITEC. All efforts are made to ensure accurate results. RITEC is not in any way liable for accuracy or use of provided results.