page_title: List of gear nomenclature
section_title: Face width
hierarchical_section_title: List of gear nomenclature / Face width
caption_attribution_description: English: Face width
context_page_description: This page lists the standard US nomenclature used in the description of mechanical gear construction and function, together with definitions of the terms. The terminology was established by the American Gear Manufacturers Association, under accreditation from the American National Standards Institute.
context_section_description: The face width of a gear is the length of teeth in an axial plane.  For double helical, it does not include the gap.
  Total face width is the actual dimension of a gear blank including the portion that exceeds the effective face width, or as in double helical gears where the total face width includes any distance or gap separating right hand and left hand helices.
  For a cylindrical gear, effective face width is the portion that contacts the mating teeth.  One member of a pair of gears may engage only a portion of its mate.
  For a bevel gear, different definitions for effective face width are applicable.
caption: Face width
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