What do the abec #'s mean?

Question

abec 3, 5, 7, 9???????

Answer 1

abec rates bearings its design to help  people chose between bearings for machines spinning 10,000's rpms. im guessing ur asking this for skateboard bearings and its the same thing except the abec doesnt apply to skateboard bearings since there in such a unquie situtation and a abec 9 may or may not work better than a 5 or something.

this site explains it much better

http://bonesbearings.com/support/abec/

Answer 2

What the guy above me said is correct but here is a list:

1) ABEC 1s - Suck!

2) ABEC 3s - usually are only purchased when you have little money

3) ABEC 5s - Normal good bearings

4) ABEC 7s -  The best cheapest bearings

5) SWISS - The best and are really expensive!

Hope I could help :D!

                        BleuCap