Fulcrum bearing change - question?

[oldgreyandslow]

Further to my rear wheel bearing noise post, I got some new bearings, 6001 2RS, type. I removed one of the rubber seals from each bearing to fit on the inside and fitted them in, all straight and perfect but....................................

I forgot to fit the sleeve/tube that fits in the middle between the two bearings! Oops

I guess this means I'm going to have to take one out again and fit it?

Unfortunately getting the bearings out was a royal pain in the backside last time so I expect I'll bugger one up getting it out becauise you can't get to the outer ring of the bearing only the inner and too much pressure here will no doubt trash it.

Lesson learned.

 

[gbb]

I was trying to figure out what that spacer does...it's not obvious. I can only assume it supports the inner race, stops it moving along the axle as wear sets in...keeping it in the optimum position...maybe.
Ive seen spacers like that in different applications and never worked out 100% why ?

Short taps on the inner race, continually changing the impact point may get it out without doing damage. They're not held in excessively tight.

If i had a penny for everytime i've looked round and saw something laid on the floor ..oh bugger.

 

[gbb]

Some time later....it occured to me what that spacer's for, (i assume) to stop you tightening up the axle sleeve so much you'd overtighten it onto the inner race, therefore overstressing the bearing.

 

[baznav]

The spacer stops the bearings being crushed when you do up the q/r skewer.

 

[PoweredByVeg]

I like Shimano's cone/loose balls

 

[gbb]

Some time later....it occured to me what that spacer's for, (i assume) to stop you tightening up the axle sleeve so much you'd overtighten it onto the inner race, therefore overstressing the bearing.

The spacer stops the bearings being crushed when you do up the q/r skewer.

Basically confirms the conclusion i belatedly came to ^^^^^

I like Shimano's cone/loose balls

Nowt wrong with them. My winter R500s, cheap wheels in the scheme of things sre still running perfectly after 3 winters, no adjustments, nothing.