PCD Divider – Chord Length Calculator
Use this tool to divide the PCD of a flange into equal spaces in just a few seconds. Just enter the pitch circle diameter (PCD), select number of divisions and click the button.
PCD Dividing Tool - Overview
This calculator helps you know the dimensions (chord length) of the compass opening when you mark the same locations on a circle PCD. It is useful for drilling holes, and creating geometric patterns.
How To Calculate Chord Length?
The calculation of chord length is given below, which is based on the following formula:
Chord Length = PCD × sin(π/n), or 2R × sin(θ/2)
Assume circle PCD 200 mm and number of divisions 4.
Therefore, Chord length = 200 × sin(π/4) = 200 × 0.7071 = 141.42 mm.
- PCD = Pitch Circle Diameter
- n = Number of divisions
- π = Pi is approximately 3.14159
Note: Chord length is the straight line distance between two points on the circumference of a circle.
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