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 ...

Bearings are often-overlooked components that bring life to your bicycle. You can’t steer, roll, pedal or have a functioning drivetrain without bearings. Basically, anything that moves on your bike ...

Editor's note: An updated version of this information can be found here. Bearings are used to help reduce friction. Metal-upon-metal contact produces large amounts of friction. The friction adds to ...

Visionary films set in the technologically advanced future have long imagined cars that ride around on frictionless orbs similar to Star Wars’ BB-8. We aren’t there yet, as cars still use wheels and ...