Keep up to date with us on the latest industry news as well as what's going on at True Gear & Spline Ltd. We also post articles for insider tips and tricks, so make sure to check back frequently.
Basic Gear Terminology
Gear manufacturing can be a complex process requiring a variety of advanced machinery. The best gear manufacturers, like True Gear & Spline, make sure to keep an inventory of the best machinery to stay on top of the latest developments in gears. Learning the basic gear terminology will help you understand how efficient gears are designed for different end use applications. Specifically, the dimensions of gears are calculated based on these three elements: module, pressure angle, and the number of teeth.
The following are some of the basic terminology in the world of gear manufacturing:
Module
Module refers to the size of the gear or how big or small it is. Basically, it is the ratio of the reference diameter of a gear divided by the number of teeth, and is expressed in millimeters (mm).
Diametral Pitch
Diametral pitch or the reciprocal of the module is the ratio of the number of a gear’s teeth to its pitch circle diameter and is expressed in “teeth per inch”.
Pressure Angle
The pressure angle is one key that will help you determine the tooth profile. It refers to the leaning angles of a gear tooth. Today, pressure angles are usually set at either 20° or 14.5°.
Number of Teeth
The number of teeth refers to the number of gear’s teeth. These can vary based on the required end use applications.
Addendum
Addendum refers to the height by which a gear tooth projects either from outside (external) or inside (internal). It could also refer to the distance between the reference line and the tooth tip.
Dedendum
Dedendum is larger than the addendum and is the distance between the reference line and the tooth root.
Tooth Depth
Tooth depth, determined from the size of the module, refers to the distance between the tooth tip and the tooth root or the sum of the addendum and the dedendum.
Indeed, knowing the technical terms of gear manufacturing can help you choose the best gear size, strength, and other factors for your needs. With that said, the experts at True Gear and Spline will help you choose the best gears through a proper consultation. Check out our website to learn more about us!
