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Ask the Expert

Home » Topics » Departments » Ask the Expert
  • Undercut
    September 1, 2021

    The Undercut Phenomenon

    “It appears that undercut can be eliminated in some cases but in most cases, the elimination of undercut, for example by increasing the root fillet radii of a pinion, results in performance problems in the operation with its mate. My question is, when can I eliminate undercut and why is it not possible in most cases?”
  • May 1, 2021

    Gear Noise Cause of a Different Stripe

    “ It is very hard to find out any paper regarding ‘tiger stripes’ failure, created by electrical discharge current over the gear teeth.” I wish to have some more information on this issue + how it affects the vibration / noise signatures; why does it creates the tiger stripes profile; how deep are the pittings; why does it create the noise and the possibility of running a gear with this failure?”
  • January 1, 2021

    The Hunting Tooth and its Effect on Break-In

    Has there ever been any experimental verification of the benefits of designing a gear pair to have a “hunting tooth” or is it just theoretical?
Read More
  • August 1, 2020

    Selecting Correct Size of Hob/Gashing Cutter

  • March 1, 2020

    Shaft Positioning Tolerances for Bevel Gears

  • January 1, 2020

    Vickers vs. Knoop Hardness Testers for Measuring Case Depth in Carburized Parts

  • August 1, 2019

    Defining the Spline Pressure Angle

  • July 1, 2019

    Tooth Thickness Tolerance and AGMA 2002-C16

  • May 1, 2019

    Application Factors

  • March 1, 2019

    Relationship between Misalignment and Transmission Error in Cross- Axes Helical Gear Assemblies

  • January 1, 2019

    State of the Gear Industry Special Edition

  • September 1, 2018
    By Robert Errichello

    Lubrication: Viscosity and Macropitting

  • June 1, 2018

    Selecting the Right Tooth Thickness

Read More

Authors

  • Robert errichello
    Robert Errichello
  • Charles schultz
    Charles D. Schultz
  • Joseph L. Elmquist
  • Hermann stadtfeld
    Dr. Hermann J. Stadtfeld
  • Hans peter dinner
    Hans-Peter Dinner
  • Robert wasilewski
    Robert F. Wasilewski
More Authors

Videos

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    Ask the Expert Live - Ask Anything
  • Ask the Expert - Gear Grinding
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