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Profile Shift

Home » Topics » Design » Profile Shift
  • Errichello featured
    July 27, 2023
    By Robert Errichello

    Profile Shift

    The objective of this report is to determine the origin of the phrase “profile shift.” Several technical books, technical papers, and industrial standards were reviewed for nomenclature associated with profile shift. The phrase “profile shift” translates directly to the German term “Profilverschiebung,” which originated in the last quarter of the 19th century. At first, profile shift was used to avoid undercutting pinions with small numbers of teeth. Later, it was recognized that profile shift improved the load capacity of the gear mesh and extended the service life of manufacturing tools.

  • July 1, 2019

    Tooth Thickness Tolerance and AGMA 2002-C16

    A reader asks: We are currently revising our gear standards and tolerances and a few questions with the new standard AGMA 2002-C16 have risen. Firstly, the way to calculate the tooth thickness tolerance seems to need a "manufacturing profile shift coefficient" that isn't specified in the standard; neither is another standard referred to for this coefficient. This tolerance on tooth thickness is needed later to calculate the span width as well as the pin diameter. Furthermore, there seems to be no tolerancing on the major and minor diameters of a gear.
  • June 1, 2018

    Selecting the Right Tooth Thickness

    A reader asks: We are currently revising our gear standards and tolerances, and a few problems with the new standard AGMA 2002-C16 have arisen. Firstly, the way to calculate the tooth thickness tolerance seems to need a "manufacturing profile shift coefficient" that isn't specified in the standard; neither is another standard referred to for this coefficient. This tolerance on tooth thickness is needed later to calculate the span width as well as the pin diameter. Furthermore, there seems to be no tolerancing on the major and minor diameters of a gear.
Read More
  • January 1, 2017

    Repair of Large, Surface-Degraded Industrial Gears - a New Approach

  • January 1, 2016
    By Dr. Hermann J. Stadtfeld

    The Importance of Profile Shift, Root Angle Correction and Cutter Head Tilt

  • August 1, 2012

    Profile Shift

  • November 1, 2001

    Profile Shift in External Parallel Axis Cylindrical Involute Gears

  • May 1, 1994

    Designing Hardened & Ground Spur Gears to Operate With Minimum Noise

  • July 1, 1988

    High Speed Hobbing of Gears With Shifted Profiles

  • January 1, 1988

    Describing Nonstandard Gears - An Alternative to the Rack Shift Coefficient

Read More

Blog Posts

  • June 26, 2018
    By Charles D. Schultz

    Planetary Gearboxes: A Wheel Inside a Wheel

Read More

Authors

  • Charles schultz
    Charles D. Schultz
  • Hermann stadtfeld
    Dr. Hermann J. Stadtfeld
  • Robert errichello
    Robert Errichello
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