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THE FEUTEX TOOLKIT

Capstan Belt Transmission Model

Estimate limiting tension ratio, transmitted power and bearing load.

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02 Your result
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FormulaTtight/Tslack=e^(µθ); P=(Ttight−Tslack)v.
Sources and model references

How to use this tool

  1. Enter every input in the labeled units; use measured or independently specified properties.
  2. Check the stated model assumptions before calculating.
  3. Interpret the output as a model estimate and verify it independently for the intended application.

Try this example

{
  "slack": 100,
  "mu": 0.3,
  "wrap": 180,
  "speed": 5
}

Accuracy and scope

Ideal flat belt at impending slip; radial approximation assumes parallel spans; ignores centrifugal tension. Educational engineering estimate only; not structural or safety certification, equipment selection, or operating recommendations.

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This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.