Are all abec 7 bearings the sam size?

Question

I found a deal on ebay for some scooter wheels ( http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=... ) and i was wondering if the size of the bearings it comes with (abec 7) is 608 or 608z or 608zz.

Answer 1

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The abec rating does not determine the size.

However scooters use 608 bearings which is the same size used for most skates.

the z and zz indicate that they have one or two shields on the bearings.

Bearings that are just listed as 608 probably have two shields but they are not listing that part of the number since it confuses people.

Answer 2

yes