Athenian cultural dominance continued throughout the Roman period, and the buildings added to the Agora reflect the educational role of the city, a role that ended only with the closing of the pagan philosophical schools by the Christian emperor Justinian in A.D. 529.
Bearing, in machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straight line relative to one another. Often one of the members is fixed, and the bearing acts as a support for the moving member. Most bearings support rotating shafts against either transverse (radial) or thrust (axial) loads.
Wheel Bearing Replacement Cost. Wheel bearings are some of the most important parts of your vehicleâs suspension. They allow the wheels to rotate smoothly and freely, helping to give you a comfortable ride. A bearing is made up of a lot of little balls that are set between two pieces of metal.