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Old 11-17-2008, 05:47 PM   #1
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Default bearings.

what do you guys say makes a "good" bearing..not your fav. brand.. but .. the type of shields? the metal? im talking engine,clutch,diffs. everything.. i work for a fastener distributer and have acces to some great prices..and was thinking about stocking up..maybe selling some as well.. but i really dont know what im looking at ...
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Old 11-17-2008, 06:23 PM   #2
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Stock rtr brgs are usually cheapies and are always metal seals - those will pass dirt into the brgs, so they are usually shortlived. I upgrade to something with rubber seals. That seems to be the right mix of price and better design. They prehaps have a little more drag than metal, but they don't pass dirt, hold lube and seem to last. I run rcs that tend to weigh a bit so whatever addd drag from rubber seals is not significant. In lighter rcs where it might be a concern, teflon sealed brgd supposed to eliminate the drag.

To me what makes a good brg - one that actually can keep dirt and grit out, holds lub (doesn't leak it out everwhere and turn into a dirt magnet) and has a good service life. Low internal drag would also be a factor, important to some and not so important to others.
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Old 11-17-2008, 06:55 PM   #3
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Another factor would be the abec grade of the bearing and the simple fact that some of the cheaper bearings are made of lower grade metal which reduces longevity.
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Old 11-17-2008, 07:24 PM   #4
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thats what im asking ... what materials and what seals are the ones to get ... is the rule different for engine bearings to clutch bearings??
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Old 11-17-2008, 08:54 PM   #5
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Unless your paying less then 1$ a peice for standard sizes...or getting ceramics for less then a buck or 2 i would just go with Avid or Protec or even Boca has a 1$ line up....for motor bearings you want ceramics....and quality ones at that...check Boca's site for more specs on the balls and sheilds used.
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Old 11-17-2008, 08:57 PM   #6
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if they are selling them for that much.. im sure they will be cheaper..
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