Expansion and HQ Move

Doppler Gear completes major expansion at Isle, MN location and moving corporate headquarters to Roseville, MN. These changes improve and expand capabilities and productive capacity.

Motion and Power Technology Expo

Thank you to everyone who stopped by to visit us at the Motion and Power Technology Expo in Detroit this October. We look forward to providing solutions to your gear and splining needs in 2020.

Download our Doppler Gear Company One Page Brochure 

Please visit our Technical resource page for information on a variety of power transmission topics or better yet, call or email us to discuss your project. We look forward to hearing from you!


Motion + Power Technology Expo

Doppler Gear will be at the Motion + Power Technology Expo, October 15-17, 2019, at Cobo Center in Detroit. Visit us at booth 3635. Be our guest at the Expo by clicking on the button below to download a complementary pass.
motion power expo free guest pass gear expo
The Expo has a lot to offer by bringing together over 300 top manufacturers, suppliers, buyers and experts in mechanical, electric and fluid power. Over 3 days, attendees can view the latest technology, products and services, and interact with technical experts. Also, the AGMA will present the Fall Technical Meeting which features the latest research on cutting-edge technologies in gearing with 5 deep-dive sessions on splines, micro skiving, gear tooth root fatigue, and more. The Expo only happens every two years, so don’t miss this one! Doppler Gear reps will be available to talk about your next project or current gear challenge. Stop by or make an appointment to meet with us. We look forward to seeing you at the show!


Quick overview about the production methods of gear cutting. This video illustrates the basic generating method of a gear shaping machine. Several examples of external and internal gears and splines are produced.


So you have a gear (or a spline) and you don’t know what it is. Three basic things you should ask, what are the Pitch, Pressure Angle, and Circular Tooth Thickness. In all involute system gearing, these features define how the gear is made and are useful to understand when discussing gear and spline projects.


Have you ever wondered what the difference is between a “gear” and a “spline”? Or what a “Stub Tooth” is? If so, you might find the attached TechBit useful and informative. Please consider Doppler Gear for your next gear cutting, broaching or splining requirement.


In previous TechBits we discussed the basic features of “spur” (straight toothed) gears and splines. What if your gear teeth are “helical” (angled) or you have a “worm”? How is that defined? How is it measured? The following TechBit explores the concepts of Lead and Helix and should be useful to anyone working with gears, worms, and even basic threads.