Umbra ball screws equipped with Cerbec silicon-nitride bearing balls handle loads to 1,800 kN, axial speeds to 160 m/min, and accelerations to 3 g. The use of Cronidur 30 steel for certain components ...

The bearing assembly in your bike’s headstock is the only thing securing the front wheel, fork, and handlebar to the rest of your bike. Seems like pretty critical componentry, right? Odds are, however ...

If the utility of an invention were somehow derived from the genius of its inventor, it would be pardonable that so many sources trace the idea for the ball bearing to a 1497 drawing by Leonardo da ...

Neolithic engineers may have used ball bearings in the construction of Stonehenge, it was claimed today. The same technique that allows vehicles and machinery to run smoothly today could have been ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...