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.
A spun bearing is due to a lack of lubrication to the crankshaft. Either a rod or main bearing fuses to the crank, causing it to spin inside the cap/rod.There is usually considerable damage to the crank, block or con-rod.Can be very expensive to repair.f some of the bearing material has gotten into the oil passages for the crank you will have to replace it as well. If it spun a bearing then the oil pump wasn't working or there was no oil in the engine to begin with. Bad news all the way around.