Gears
Gear Pitch Line Velocity Calculator
Enter reference diameter and gear RPM to calculate the theoretical tangential speed at the reference circle.
Inputs
Formula
Pitch-line velocity
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
- Reference diameter
- 100 mm
- Gear speed
- 1,450 rpm
Result
- Pitch-line velocity
- 7.59 m/s
Related calculators
Continue your workflow with a related calculation.
Gears
Gear Pitch Diameter Calculator
Calculate standard metric spur-gear reference diameter from module and number of teeth.
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Gear RPM Calculator
Calculate driven gear RPM from driver RPM and the tooth counts of a simple external gear pair.
Gears
Rack Travel per Pinion Revolution Calculator
Calculate rack linear travel per pinion revolution from spur-gear module and pinion tooth count.
Frequently asked questions
What diameter should I use?
Use the gear reference or pitch diameter for pitch-line velocity rather than the outside diameter.
Why is pitch-line speed useful?
It is commonly used when evaluating gear operating conditions, lubrication, noise, and manufacturer speed limits.