rrobor
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Nov 6, 2008, 6:15 AM
Post #25 of 28
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Re: [denonjapan] Sony DVP-NC600 spinning issues
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I asked you to look up how phosphor bronze bearings work, you did not. Phosphorus is classified as non metallic so you can not create a true alloy by mixing it with any metal. What you create is a metal with holes where the atoms dont fit together correctly, in effect a bronze sponge. If you heat this sponge the air within it expands, if now plunged into a suitable oil, as it cools the oil is sucked in as the air contracts impregnating the sponge and being held there for the life of the bearing. Grease being thicker can not impregnate the sponge so is just not used. Grime from various sources tend to choke the action of the bearing so by using some liquid solvent to clean the motor lower bearing, you will remove the clogging of the pores on the surface of the bearing. To do this you need a highly fluid liquid and rely on a phenomena called capillary action, which is the way a tree pumps water from its roots to its leaves. This is due to a tube or two plates being so close that a molecule of air will not fit, this creates a slight vacuum so a thin liquid can be sucked up. Grease would block the bearing and would not work. If you are going to argue, argue on the physics or the mechanics, but dont just waffle rubbish.
(This post was edited by rrobor on Nov 6, 2008, 7:29 AM)
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