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.
References in periodicals archive
This features changes the wheel
arc of contact and produces a better metallurgical finish.
If the
arc of contact is less than 180 degrees, the V-belts will need to operate at a higher tension in order to transmit the required HP without slipping.
Designers also use idlers to enable a V-belt drive to turn a comer or to clear obstructions, or to increase the
arc of contact on a sheave.
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