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.
The engine bearing in your vehicle refers to either the engine's main bearings or the rod bearings. Engine bearings protect and support the connecting rod or crankshaft, enabling it to spin freely in the engine.ngine Bearing Replacement. When either rod bearings or main bearings in an engine fail, it is a good idea to replace all of the bearings in the set. It must be stated that this is a precision operation that most mechanics allow a machine shop with the proper tools to perform.