In mechanical engineering, the type of bearing very much, but a few kinds in the use of radiator : use sliding friction bearings and use rolling friction sleeve of ball bearings and two forms of bearing mixed. In recent years the radiator manufacturer in bearing the release of new technology, such as magnetic bearing, water wave bearing, magnetic core bearing, trace the bearing is the basic form of above bearing improved and become, operation principle no change. Ordinary air cooled radiator on the main use of oil bearing and ball bearings.

Oil-retaining bearing is the use of sliding friction sleeve bearing, use oil as a lubricant and friction reduction agent, use the early slide may run low noise, production costs are low, but the bearing badly worn short life ball bearing had the very big disparity. And the bearings use of a long time, because the cause of the oil seal (computer of radiator is likely to use high-grade oil seal, in general, is ordinary paper oil seal), lubricants would gradually volatile, and dust may enter the bearing, and cause fan speed slowing, noise increases, serious still can cause fan eccentric wear because bearing triggered violent vibration. Appear these phenomena, or open oil seal , or only purchasing another new fan.

Ball bearing changed bearing friction way, use the rolling friction, this way more effective reduces the bearing surface of the friction phenomenon, effectively improve the fan bearings service life , and therefore will extend the radiator service life . Weakness is brought about the process is more complex, lead to the cost ascend, at the same time, it brings higher working noise.
 



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