Belts & Pulleys
Belt Natural Frequency Calculator
Solve the vibrating-string relationship for frequency to estimate the natural frequency associated with a given belt span tension.
Inputs
Formula
Natural frequency from tension
Worked example
Using the default values shown in the calculator, the same formula gives the following result. This is a quick sanity check for the calculation, not a design recommendation.
Inputs
- Belt span tension
- 625 N
- Belt mass per unit length
- 250 g/m
- Free span length
- 500 mm
Result
- Estimated natural frequency
- 50 Hz
Related calculators
Continue your workflow with a related calculation.
Belts & Pulleys
Belt Frequency Tension Calculator
Estimate belt span tension from measured natural frequency, span length, and belt mass per unit length.
Belts & Pulleys
Belt Effective Tension Calculator
Calculate effective belt pull from transmitted mechanical power and belt linear speed.
Belts & Pulleys
Belt Length Calculator
Calculate approximate open-belt length from pulley diameters and center distance, with metric and imperial results.
Frequently asked questions
Can this replace a manufacturer's tension chart?
No. It is a physics-based estimate. Product-specific belt stiffness, mass constants, and installation procedures should take priority.
What span length should be measured?
Use the free straight span that is being excited and measured, not the total belt circumference.