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500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 05-19-2012, 04:05 PM   #1 (permalink)
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Default Boca bearings

Is this the correct bearing for main shaft for a 500ESP ?

http://www.bocabearings.com/productD...px?ItemID=3135
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Old 05-21-2012, 12:38 AM   #2 (permalink)
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that bearing has a 1 rating for abec or whatever it is ... i think thats the lowest on the scale and is not good... i think the higher the number the better the bearing is ..

i put abec4s in a brushless motor thinkin wow i got a awesome deal on them .. 4 races they was toast ..

but i could be wrong on the numbers ..
i have a set of traxx bearings from a slash or whatever it was that uses them .. they have blue seals on them .. working great so far .. and was good price ..
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Old 05-21-2012, 07:18 AM   #3 (permalink)
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Those look correct. A smaller class number means a tighter tolerance and a larger number means a looser tolerance. This is just the opposite of the ABEC system.
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Old 05-21-2012, 03:24 PM   #4 (permalink)
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right so if the abec number is lower the bearing isnt a good one .. the higher the number in abec is better ..

the abec number for that bearing is 1 ..

and i think its on a scale of 1 to 14 or something like that
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Old 05-21-2012, 03:46 PM   #5 (permalink)
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Just remember that ABEC does not indicate quality or smoothness. It is a tolereance scale. Figure that one out
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Old 05-22-2012, 07:30 AM   #6 (permalink)
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1 on a abec scale would be a loose tolerance.
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Old 05-22-2012, 12:24 PM   #7 (permalink)
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That's about the cheapest bearing they sell !


http://www.bocabearings.com/bearing-...CYZZNB2-8x16x5
This one has ceramic balls and will run great, very low rolling resistance. $ 7.95



http://www.bocabearings.com/bearing-...R688ZZ5-8x16x5 this one is rated ABEC 5 for a $ 8.95
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