arc of contact
Also found in: Medical.
arc of contact
[¦ärk əv ′kän‚takt] (mechanical engineering)
The angular distance over which a gear tooth travels while it is in contact with its mating tooth. Also known as arc of action.
The angular distance a pulley travels while in contact with a belt or rope.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.