Why is there so much emphasis on the tooth contact pattern for bevel gears in the assembled condition and not so for cylindrical gears, etc?

Can my metal gear(s) be replaced with plastic gears?

In this installment of Ask the Expert, Dr. Stadtfeld describes the best methods for measuring backlash in bevel gears.

With all the advantages of building float into a planetary gear system, what advantages are there to using a carrier in the first place, rather than simply having your planets float in the system?

What gear material is suitable for high-temperature (350 – 550 degree C), high-vacuum, clean-environment use?

How does one determine the center of a worm and a worm wheel? Also, what are the differences between the common worm tooth forms?

A reader asks about how to specify a method of lubrication for a speed reducer with a three-stage helical gear with a low peripheral speed.

What are the ins-and-outs of quality inspection of girth gears, from both a manufacturer and buyer perspective? Our experts respond.

How does one perform a contact analysis for worn gears? Our expert responds.

Question: We manufacture some gears that require an axial face as a datum, as well as locating on the bore for centering. Other gears use only the bore for both axial and radial locating. What type of workholding is appropriate for each type of part? Is there workholding that will work for both types?