Do the sizes of bearings differ?

Does the size of the inside diameter of a bearings differ? Or are they all the same? If not how do you tell the size of the bearings inner diameter?

I need to buy new bearings for my rollerblades (the hockey type) and i want to know if the bolts that came with the rollerblades will fit inside any kind of bearing.

Update:

I am looking at Abec 7 bearings. Would these bearings be compatible with the bolts from my rollerskates?

1 Answer

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  • 9 years ago
    Favorite Answer

    Yep, 608z bearings. Same ones used in skateboards.

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