Why are ball bearings so important?

The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. Because the balls are rolling they have a much lower coefficient of friction than if two flat surfaces were sliding against each other.

How were early ball bearings made?

The first patent for a ball bearing was granted in 1794 to Philip Vaughan, a Welsh ironmaster and inventor. His patent was for a ball bearing with iron balls that ran inside deep grooves and that were sealed in place by a stopper.

What were ball bearings used for in WWII?

German bearing manufacturers had a long history of manufacturing bearings in Schweinfurt, and their production during World War II made them a target for American bombings. Bearings were a vital component in the tanks, airplanes, machine guns, heavy artillery, and submarines used by the belligerents during the war.

How ball bearings reduce friction?

Bearings reduce friction by means of a rolling motion Bearings reduce friction by means of this rolling motion. The “rolling bearing”, with its rolling motion, reduces friction more than the “plain bearing” with its sliding motion, allowing for a greater decrease in the amount of energy consumption during rotation.

What things have bearings in them?

Ball bearings are the most common type of bearings and are found in many every day objects, such skateboards, blenders, bicycles, DVD players and photocopiers. This type of bearing is typically used in applications which have a high speed and a low load.

Why are ball bearings important in war?

Ball and roller bearings are speciality engineering products which use balls to reduce rotational friction and support loads by separating moving axles. During a war they are particularly useful in airplane motors, tanks, automobiles, guns, submarine engines and similar war materiel.