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Question:

are bearings Dust Cover unique for specific wheel/hubs?

My bike has a hub for a shimano freewheel with 7 gears. One of the dust covers in the hub is bended inwards and the cone goes through it. As a result the bearings come out. I was told by a bike's mechanic these dust covers are very hard to find and they are mostly manufactured for the specific wheel. Is that true? Do I have to change a full hub just because of this little dust cover? I did a quick search and found some for Shimano hubs but have not found one that looks like mine.

Answer:

? dust covers don;t affect the bearings you must have something misunderstood if the bearings come out you have problems but that would be a matter of wrong bearings or wrong cones, not bad dust cover wle
Wheel Dust Covers
If the cones are properly adjusted, you could remove the dustcaps and the bearings would not fall out. Any hub made for freewheels will fit any brand of freewheel, your hubs are not made specifically for Shimano freewheels. The bike mechanic is correct, the dustcaps are specific to the brand and model of hub you have, but if bearings are falling out, there is a lot more wrong with your hubs that the dustcaps. The hubs have to be completely disassembled and inspected to see what is wrong. If the hubs are too damaged to rebuild, new wheels will cost less than changing a hub. If the hub is damaged, the rest of the wheel will also probably be in poor condition

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