What does “amplitude” and “lead angle” mean on a vibratory machine?

On all types of vibratory finishers, an imbalance on the drive is created to cause vibration as the drive rotates. A greater amount of imbalance creates more “amplitude,” which is a major component of the roll in the process channel. “Lead angle” refers to how much forward movement is happening on every stroke. In a round bowl style vibratory finisher, “lead angle” is used to determine how aggressively the machine is feeding horizontally. We call this “feed.”