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Fundamentals of Worm & Crossed Axis Helical Gearing

September 20-21, 2018 | Crowne Plaza Old Town Alexandria, Alexandria, VA

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Education Brochure (pdf)

Course Description

Provides an introduction and emphasize the differences between parallel (the experience base) axis and worm and crossed axis helical gears. Describe the basics of worm and crossed axis helical gears, their fundamental design principals, application guidelines and recommendations, lubrication requirement, a discussion of accuracy and quality and summarize with a brief review of common failure modes.


Classes are 8:00 am - 5:00 pm.

Learning Objectives

After attending this session, you will be able to:

  • Define the basic differences between parallel axis, common crossed intersecting axis and worm / wheel and crossed axis helical gears
  • Interpret and discuss the design and applications specifics as they apply to worm / wheel and crossed axis helical gears
  • Assess lubrication, cooling and support requirements for worm / wheel and crossed axis helical gears
  • Explain the cause of a particular failure of a worm / wheel or crossed axis helical gear pair, as a function of application or use

Continuing Education Units: 1.3

Photo Release

From time to time AGMA uses photographs of AGMA events in its promotional materials. Unless this permission is revoked in writing to the AGMA, by virtue of your attendance all attendees agree to the use of their likeness in such materials.

Cancellation and Payment Policy

Payment must accompany this form. All cancellations must be in writing and received by AGMA 14 days prior to the class start.  A $200 U.S. processing fee will be assessed for each cancelled registration that results in a refund after the 14-day period. A substitution or schedule change fee of $50 when substituting one student for another or moving the current student to another AGMA course after the 14-day period. A 50% refund will be issued if cancellation occurs on or after the class start date.

Hotel Info

Crowne Plaza Old Town Alexandria
901 N. Fairfax Street
Alexandria, VA 22314

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Room Rate



Reserve your room though this link.


The hotel cut-off date is:  August 30, 2018

We cannot guarentee our room rate after this date. 



First Registrant From Company
Additional Registrant From Company


First Registrant From Company
Additional Registrant From Company


William “Mark” McVea, PhD, P.E.

Dr. William Mark McVea, P.E., is currently President and Principal Engineer of KBE+, Inc. where he and his team design and develop complete powertrains for automotive and off-highway vehicles. His experience includes positions within the mechanical drive and powertrain industry. Chief Technology Officer for an industry leader in the design and development of patented powertrain engineering technology used primarily in the automotive industry; Professor of Vehicle Dynamics and Powertrain Sciences in the Mechanical Engineering Department at the Rochester Institute of Technology; adjunct professor at Purdue University in their Automotive Sciences Department; and was manager of the CAE group within a tier-one powertrain supplier to global automotive markets, a consulting engineer in vehicle dynamics, and a project manager of traction systems for off-highway vehicles as well. In addition, he has extensive publication on transmission systems, automated design assistant systems, knoweldge systems and knowledge based engineering in general. He also holds or is listed as co-inventor on numerous patents related to mechanical power transmissions. Mark holds a B.S. in Mechanical Engineering from the Rochester Institute of Technology, a PhD in Design Engineering from Purdue University and is a licensed Professional Engineer.