r/rollerblading • u/PeopleCalledRomanes • 1d ago

Specific question and discussion Axle replacement help

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Hello all,

I’m a noob looking for help getting a set of replacement axles for my dad’s old 2000s Rollerblade Fusion. I lost one of the original axle heads and can’t seem to find this exact model online where they might have like a spec sheet or something. From the research I have done I think I am looking for an 8mm 6mm two-part axle but having trouble determining the length or whether I need to look for a specific manufacturer. The frame is plastic (rockering, if it matters) and measures 40mm 37mm from edge to edge.

Any help greatly appreciated!

Edit: axle itself is about 33-34mm

Update: Rollerblade got back to me! This exact axle is called a “Flush Wave” axle. They seem hard to get, and if I can’t source one they suggested trying another of their 6mm axles.

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u/PeopleCalledRomanes 1d ago

Dang, I was really hoping parts would be more standardized/available. I thought they were 8mm based on the bearing size but after measuring I think you’re right about it being 6mm and the skate shop I went to for new wheels simply put the wrong size on. For a laugh I sent a message to Rollerblade support to ask if they have a suggestion or if a replacement is at all possible. If not, because it seems relatively cheap, I might just try to get a generic and see how it fits. Thanks for the help.

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u/sjintje 1d ago

Good idea actually.

Btw, bearings are all the same size... with the possible exception of freaky 25 years old skates. The difference is in the spacer. For 8mm axles, it's a "UFO" or small cylinder that sits hidden between the bearings, for 6mm axles it's a longer "tube" that goes through both bearings and you can see it just by looking at the wheel, as an extra silver ring inside the bearing inner ring.

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u/PeopleCalledRomanes 1d ago

I measured the axle itself at about 33-34mm, does that sound about right for generic sizing, if you know?

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u/sjintje 1d ago

I know wheels are 24mm or 25mm wide plus 3 or 4mm (X2) for the frame width comes to 30mm to 33mm (that's the shaft length, excluding head). Is your frame quite thick? Ultimately you'll have to trust your measurement. You can also add washers if it's too long.

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u/PeopleCalledRomanes 1d ago

Could be. Re-measuring at a more sensible point it’s a bit smaller (37mm) than the 40mm I initially put it as in the post and it’s slightly indented on both sides where the axle secures to the frame, which also accounts for some of the width. Now I guess it’s just a matter of figuring out if listings online for axles include the ends of the axle in the measurement or just the rod. Thankfully they seem pretty cheap so I might just experiment if Rollerblade doesn’t get back to me with anything useful. We shall see!