Each size Okcoil rolling ring linear drive has a different maximum linear pitch - the linear distance the drive travels per one shaft revolution. The higher the motor RPMs, the faster the drive will travel its maximum linear pitch.
The pitch dial on the drive enables a 10:1 turndown on linear pitch. This is accomplished without changing gears or adjusting motor speed.
For example, the Model OK15 has a maximum linear pitch of 11 mm. With the pitch dial set at number 10, the drive will travel 11 mm with each shaft revolution. By turning the pitch dial to number 1, users reduce the travel distance (and therefore linear speed) per shaft revolution to 1.1 mm ?regardless of motor speed.
The following chart lists Okcoil drives with their respective maximum linear pitch ratings.