Helical Gear Generator


Helical gears resemble spur gears with the teeth at an angle. They can be meshed in parallel or crossed orientations at 90 degrees or arbitrary angles and can be generated with as little as a single tooth forming a screw gear.


Gears may be specified in either the 'Normal' or the 'Radial' system or the fixed profile Sunderland standard, any of which can be generated as either Left or Right handed. Handedness in helical gears refers to the direction the teeth lean when the gear is placed flat on a table.


Using this add-in, proper Herringbone gears (such as the gears used for this add-in's thumbnail) can be created by using a Sunderland profile then mirroring the gear about one of its faces. In the case of Herringbone or other double-helix gears, the handedness of the base gear is not as significant as it is for single helix gears - to effectively change the handedness of a Herringbone / double helix gear all you need to do is flip it over - whereas for a single helix gear it must be mirrored to change its handedness.


Finally, by setting a helix angle of 0 degrees, Spur gears can be created and defined in the metric system (as opposed to the sample Spur Gear script which defines gears in the American system) with this add-in.


Be sure to check out the Gear Down For What YouTube channel and on thingiverse - he is doing some amazing things with Helical Gears!


ATTENTION MAC USERS: If you experience issues with the installer please see this article first. Then if you still have trouble installing the plugin e-mail me (ross.korsky@gmail.com) and I will provide a workaround.

Informationen zu dieser Version

Version 1.0.4, 07.07.2021
1.0.4 Fix: Fusion May 2020 update breaks loft creation of tooth geometry.

Screenshots und Videos


3 Bewertungen
Technische Hilfe erhalten
  • Awesome
    Fedor Zavyalik | April 17, 2021 Geprüfter Download (Was ist das?)


  • Excellent!
    Albert Questiaux | März 13, 2021

    Easy to use and also great for worm gears too. Just what I needed thanks. Just cant edit the gear once created in fusion.

    Now what about bevel and spiral bevel gears ... your next challenge.

  • Outstanding
    Jorge Bula | Oktober 09, 2020 Geprüfter Download (Was ist das?)

    Thanks, excelent app

  • Lovely!
    Shane Galvin | August 18, 2020 Geprüfter Download (Was ist das?)

    Works for what I need. Wish it were parametric but oh well.

    And another thing: the bodies created are named "Healical Gear"... just a quick fix to line 877. ;)

  • herringbone gear is wrong
    Muhammet Ali Bulat | Juni 29, 2020 Geprüfter Download (Was ist das?)

    I created two herringbone gear in surrender mode. first 18 tooth and second 72 tooth. they are not compatible. neither in the program nor in the 3D output.

    Ross Korsky (Herausgeber) | Juli 02, 2020

    Did you remember to make one left handed and the other right handed? Helical gears must be of opposite hands to mesh in classical gearing applications.

  • Great generator
    Alex Axenti | Juni 27, 2020 Geprüfter Download (Was ist das?)

    I really like it, quick and easy to use 

  • fantastic
    Adrian Sippitt | Mai 22, 2020 Geprüfter Download (Was ist das?)

    Brilliant, thanks so much

    Ivan Korotchenko | März 01, 2020 Geprüfter Download (Was ist das?)


  • useful tool
    Pablo Costas | April 15, 2019 Geprüfter Download (Was ist das?)

    Installer worked for MacOS without a problem.

  • Thanks!
    Yuriy Skvortsov | Februar 08, 2019 Geprüfter Download (Was ist das?)

    The installer still does not work for MacOS, but Ross was kind to provide a usable package by e-mail. The addon works great! Really easy to use and results are perfect.

  • Addendum with Radial sustem.
    Radek | August 12, 2018 Geprüfter Download (Was ist das?)

    Addendum and dadendum doesn't seem to do anything in Radial system. 

  • Thanks !!!
    Sergey Bob | Juli 22, 2018

    Very many thanks !


  • Awesome
    Rusty Nielsen | Februar 16, 2018 Geprüfter Download (Was ist das?)

    Great add-in!

  • Excellent for herringbone gears
    Nick Biederman | November 27, 2017 Geprüfter Download (Was ist das?)

    This plugin is perfect for creating herringbone gears

  • Thanks!
    Igor Andreev | Juli 17, 2017 Geprüfter Download (Was ist das?)

    Thank you! Very comfortably!

  • Works Great!
    Michael Thiesen | Juni 05, 2017 Geprüfter Download (Was ist das?)

    Parameters are well documented and the resulting gears mesh nicely.

  • Keeps crashing Fusion
    Bjørn Borud | Mai 27, 2017 Geprüfter Download (Was ist das?)

    Haven't been able to use it since it consistently crashes Fusion 360.

  • Excellent!
    Darrell Nevers | Mai 20, 2017 Geprüfter Download (Was ist das?)

    This definitely makes life quite a bit easier for designing gear boxes! Only downside is that the tooth count input won't accept parameters; it just throws an error – "Teeth – must be greater than 0." – when I try to use a pre-defined parameter

  • Thanks!!
    Sai Kishore | Februar 03, 2017

    Thanks for the addon

  • Change active units
    Brian Stewart | Januar 18, 2017 Geprüfter Download (Was ist das?)

    Be nice to select either metric or inch for the units. Or have it use the default units for each design. Not everyone uses metric.

  • Exactly what I was looking for!
    Box Jockey | Dezember 06, 2016 Geprüfter Download (Was ist das?)

    Easy to use and the results are fantastic!!

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