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Bearing Vibration Envelope Demodulation & Fault Frequency Calculator

Easily calculate and compute bearing vibration envelope demodulation & fault frequency calculator with accurate equations, live formulas, and expert guidance.

Calculated Result
148.7 Hz

Ball Pass Outer Race Frequency (BPFO)

Ball Pass Outer Race Frequency (BPFO)

148.7 Hz

Bpfi Inner Race Hz

207.3

Bsf Ball Spin Hz

87.6

Ftf Cage Frequency Hz

12.39

Running Speed1 X Hz

29.67

148.7 — Hz

Calculation Breakdown

  1. Applied FormulaComputes outer race (BPFO), inner race (BPFI), ball spin (BSF), and cage fundamental train frequency (FTF) for envelope demodulation condition monitoring.\text{BPFO} = \frac{N_b}{2} f_r \left( 1 - \frac{d}{D}\cos\alpha \right), \quad \text{BPFI} = \frac{N_b}{2} f_r \left( 1 + \frac{d}{D}\cos\alpha \right)

Bearing Fault Frequencies (BPFO/BPFI) Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.03774112149Ball Pass Outer Race Frequency (BPFO)

What Is the Bearing Vibration Envelope Demodulation & Fault Frequency Calculator?

This tool computes bearing vibration envelope demodulation & fault frequency calculator with high precision arithmetic.

How Does the Bearing Vibration Envelope Demodulation & Fault Frequency Calculator Work?

Computes outer race (BPFO), inner race (BPFI), ball spin (BSF), and cage fundamental train frequency (FTF) for envelope demodulation condition monitoring.

Bearing Vibration Envelope Demodulation & Fault Frequency Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

BPFO=Nb2fr(1−dDcos⁡α),BPFI=Nb2fr(1+dDcos⁡α)\text{BPFO} = \frac{N_b}{2} f_r \left( 1 - \frac{d}{D}\cos\alpha \right), \quad \text{BPFI} = \frac{N_b}{2} f_r \left( 1 + \frac{d}{D}\cos\alpha \right)

Computes outer race (BPFO), inner race (BPFI), ball spin (BSF), and cage fundamental train frequency (FTF) for envelope demodulation condition monitoring.

How to Use the Bearing Vibration Envelope Demodulation & Fault Frequency Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Bearing Vibration Envelope Demodulation & Fault Frequency Calculator Example

Input Values:

shaftSpeedRpm:1780
numberOfRollingElements:12
ballDiameterMm:14
pitchDiameterMm:85
contactAngleDeg:0
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required Hz.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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