How to measure ball screw pitch?

Ball Screw Lead

Lead sizes: The lead is classified into two categories to suit various application.

High helix lead (Large lead) : With this, the ball nut travels a longer distance when the screw

shaft makes one rotation (or the ball nut makes one revolution).

This is suited to high speed operation.

Fine pitch lead : The ball nut travels a shorter distance when the screw shaft

makes one rotation (or the ball nut has made one revolution).

This is suited to highly accurate positioning.