A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races.
The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. In most applications, one race is stationary and the other is attached to the rotating assembly (e.g., a hub or shaft). As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling they have a much lower coefficient of friction than if two flat surfaces were sliding against each other.
Ball bearings tend to have lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races.
... Drawbacks Short travel (limited by length of bearing contact), low load capacity, poor accuracy, short lifetime ...
... to find a solution to the problems with frequent break downs in the ball bearings for the main drive shafts ... caused by the ground conditions with lots of clay that the factory was built on and the shaft bearing supports moved some fractions of millimeters from time to time, hardly measurable, inducing ... spent more and more time on the development of bearings in general, collecting all sorts of technical achievements and new ideas that was presented continuously on the ball bearing concepts around Europe ...
... The ball size increases as the series increases, for any given inner diameter or outer diameter (not both) ... The larger the ball the greater the load carrying capacity ...
... The FreeHand Zero is a ball-bearing yo-yo for free hand or regular play. 99.5% forged magnesium, with a ceramic ball-bearing transaxle ... The Freehand 2 is a ball-bearing yo-yo for free hand or regular play ...
... Ball Bearing was a 1992 television advertisement for the Lexus ES 300, which introduced the luxury sedan to television audiences ... The advertisement showed a ball bearing rolling smoothly down the panel seams of a Lexus sedan, thus demonstrating the precise quality of its exterior elements ...
Famous quotes containing the words bearing and/or ball:
“Rosenbloom is dead.
The tread of the carriers does not halt
On the hill, but turns
Up the sky.
They are bearing his body into the sky.”
—Wallace Stevens (18791955)
“But the ball is lost and the mallet slipped long since from the hands
Under the running tap that are not the hands of a child.”
—Louis MacNeice (19071963)