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Question:

The difference between spacers in skate bearings?

I have seen two different types of spacers and can;t seem to find much on the net about the differences between them. One type just goes in between the two bearings and the other type has a smaller end that goes into each bearing. My question is simply whats the difference between the two and whats better? (Inline skate/hockey/general question)

Answer:

The difference is the axle diameter that they are for. If you measure the bearing, the opening is 8mm (5/16) Better skates come with 8mm axles and cheaper ones with 6mm axles (1/4) Since 8mm axles fit the inside of the bearings the spacers just take up the space on the axle between them. The spacers for 6mm axles have to have the small ends extending into the bearings to make up for the gap between the axle and the bearing.

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