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Although bearings had been developed since ancient times, the first modern recorded patent on ball bearings was awarded to Philip Vaughan, a Welsh inventor and ironmaster who created the first design for a ball bearing in Carmarthen in 1794. His was the first modern ball-bearing design, with the ball running along a groove in the axle assembly. [1]
SUGGESTED ADDITION: Philip Vaughan was a Welsh inventor and ironmaster who patented the first design for a ball bearing in Carmarthen in 1794.[1] His design ran along a track in an axle assembly, known as a ball race, thus originating the modern ball bearing design.[2] PER WIKIPEDIAHoohoolian 22:31, 19 June 2013 (UTC)
A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
The cage can easily be seen in a non sealed ball bearing as spacers between the balls. A sealed bearing is a normal ball bearing that has the addition of rubber or plastic seals each side of the bearing to prevent ingress of dust particles etc. and to keep its pre-filled lubricant within.
A spherical rolling joint is a high-precision ball joint consisting of a spherical outer and inner race separated by ball bearings. The ball bearings are housed in a spherical retainer and roll along both the inner and outer surfaces. This design allows the joint to have very low friction while maintaining a large range of motion and backlash ...
In the case of ball bearings, the bearing has inner and outer races and a set of balls. Each race is a ring with a groove where the balls rest. The groove is usually shaped so the ball is a slightly loose fit in the groove. Thus, in principle, the ball contacts each race at a single point.
A sealed deep groove ball bearing. In mechanical engineering, a rolling-element bearing, also known as a rolling bearing, [1] is a bearing which carries a load by placing rolling elements (such as balls, cylinders, or cones) between two concentric, grooved rings called races.
It is often simply called a book club, a term that may cause confusion with a book sales club. Other terms include reading group, book group, and book discussion group. Book discussion clubs may meet in private homes, libraries, bookstores, online forums, pubs, and cafés, or restaurants, sometimes over meals or drinks.