Fidget spinners ― kids spin them and spin them ― and while parents may not "get" why the boomerang-shaped toys have caught on with such force, there's real physics to explain how the distracting ...

They lie at the heart of every fidget spinner and in every motor that runs our lives, from the steppers in a 3D printer to the hundreds in every car engine. They can be as simple as a lubricated ...

Understand the key performance differences between angular-contact ball bearings and crossed-roller bearings—and how each affects torque, accuracy and compactness in rotary ball spline applications.

Better materials and sealing technologies meet the challenges of modern machine tools and coolants. Bigger, faster machine tools obviously put greater demands on spindle bearings. Most spindles use a ...

C Hoover Precision Products Inc. will close its Hartford plant Nov. 22, putting about 50 people out of work. “The reason is purely economic,” said Bill Anderson, an attorney representing the ...