Before we move on from helix angle restrictions, I want to say a few things about face contact ratio. Soon after the appearance of the first helica...

Higher Quality Internal Gears

You do not always have to say “no” when confronted with non-conforming parts. Here are a few “fixes” I have been comfortable authorizing:

The second component in that face contact ratio equation is the face width. There are almost as many “rules of thumb” for determining the “proper” ...

Does technical lingo confuse you? If so, welcome to the bevel gear sector and its special kind of hell. The same “system” that benefited from stand...

My last blog covered the motivation for the Swag of the Expo award and my inspiration in creating it. Top contenders that did not quite qualify for...

This paper outlines the comparison of efficiencies for worm gearboxes with a center distance ranging from 28 - 150 mm that have single reduction from 5 to 100:1. Efficiencies are calculated using several standards (AGMA, ISO, DIN, BS) or by methods defined in other bibliographic references. It also deals with the measurement of torque and temperature on a test rig — required for the calibration of an analytical model to predict worm gearbox efficiency and temperature. And finally, there are examples of experimental activity (wear and friction measurements on a blockon- ring tribometer and the measurements of dynamic viscosity) regarding the effort of improving the efficiency for worm gear drivers by adding nanoparticles of fullerene shape to standard PEG lubricant