Search Ctrl K
Home / Tools
THE FEUTEX TOOLKIT

Chain Drive Geometric Link Count

Estimate pitch count and round upward to an even link count.

Mechanical workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaLp≈2C/p+(z1+z2)/2+(z2−z1)²/[4π²(C/p)].
Sources and model references

Worked example

Inputs

Chain pitch
12.7 mm
Center distance
500 mm
Small sprocket teeth
20
Large sprocket teeth
40

Expected results

Calculated chain pitches
108.9975133
Next even link count
110 links

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

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

{
  "pitch": 12.7,
  "center": 500,
  "small": 20,
  "large": 40
}

Accuracy and scope

Approximate geometry; rounded links require center-distance adjustment. Excludes wear, sprocket engagement and load rating. Educational engineering estimate only; not structural or safety certification, equipment selection, or operating recommendations.

Is my data uploaded?

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.