Well, I was wondering: do all skateboard bearings have 2 sides? I looked at abec 7 or 8 bearings and they do not seem to have 2 sides? How do I know which side should i grease? Also, does abec bearings have a metal/rubber covering on one side? Thanks, if you can answer all these questions, i will give you best answer. Don't say, Get bone swiss bearings! They're better! I know they are, but I'm asking about abec 7 bearings. Thanks.
most of them have two sides. I believe that abec 7 bearings have two sides but i am not sure. google abec 7 bearings and that should give you the answer
By sides, I assume that you mean the shields that are there to block dirt from getting in. Only one shield is needed. Some makers include both and some only one. (This applies to ABEC 7 or any other bearing) The one on the wheel side is not needed since no dirt can get in there except through the other side. You don't grease the shields. There is only one set of balls in the bearing and greasing from either side will do the same thing. ABEC ratings are meaningless for skate boards or inline skates. The ratings are for vibration and accuracy in high speed industrial machines. You can get ABEC 7 bearings that are garbage or non-rated (Bones, TwinCam, and ZeroDrag all make non-ABEC bearings as their top models) bearings that are extremely good.
