Can anyone guide me as to reassemble this item?

[RickTaff]

Have fitted new sprocket carrier bearing... and this item is meant to go through the centre of bearing... It wont fit though.

If i run my finger through centre of the part, its smooth no indication anything is damaged, or jammed. But i am curious whether the smaller inner ring... is infact meant to come out and is an old piece of bearing racing.

Noobish with bikes so wondering if i am doing something wrong. Cheers

https://scontent.xx.fbcdn.net/v/t1.0-9/17342743_10211971550986771_5115143667390942497_n.jpg?oh=0d07634be56c4a799ef9aa64babde641&oe=5928A090

[Hahadumball]

big hammer

if that fails
bigger hammer
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Fin: no matter how much I look at It I can't understand what was going through my head, all I remember is going about 80 and redlining it to stop it seizing.
360 Deg... Five 1/4 turns. :- Teflon-Mike 18 Jan 2015

[Polarbear]

Personally I would like to know what bike.

I do know bikes are like lego and everything is interchangeable but call me pedantic.
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Triumph Trophy Launch Edition

[stinkwheel]

Does look very much like there is an inner bearing race stuck on the end nearest the camera.

If you fitted the new one, presumably you removed the old one? How did that go? Normally the centre race is pretty important in that process so you ought to have noticed its absence at some point in proceedings (the shower of loose ball bearings when you removed that spacer would have been the first clue).
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Chris45]

[Pete.]

It won't fit through the new bearing because the inner race of the old bearing is still on it.

The near end in the picture - that wider bit with the smooth groove running round it is part of the old bearing. You have to knock the tube out of that and then it will fit into the new bearing.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[RickTaff]

[RickTaff]

[kgm]

As Pete said the old inner race will have to come off first. It's possibly a different diameter at either end or could just be a tight intereference fit. If the inner tube is a tight fit into the bearing then freeze it overnight and it should slip in.

[RickTaff]

[Robby]

The reason people are being a bit cautious in their answers for what should be a simple question is that this looks like a bit of an odd design.

Usually there is a spacer tube between two wheel bearings, and it butts up against the inner race. This is so you can tighten the axle without popping the inner race out of the bearing.
The bearings then sit directly onto the axle. Having an additional sleeve between the bearing and the axle just looks like another opportunity to make a slack fit, or to introduce more space for friction and corrosion to happen.

Have a look on a parts diagram and see what it is meant to look like. If I came across something like that on a Japanese bike I would assume that someone fitted the wrong size bearing in the past, and this is a bodge to get the bike on the road.

[Pete.]

I think it's right. Tube spacer plugs into carrier bearing for ease of assembly and buts again wheel bearing to provide axial force for clamping.

No need to freeze it, won't help anyway coz both parts are steel. Hold the tube lightly in a vice with the bearing hub on top and knock the tube it with a hammer and socket. Don't muller the hole.
To re-fit lay the new bearing on a flat surface and tap the tube in until it seats.
____________________
a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Baggyman]

[RickTaff]

Thanks for the advice guys, managed to get it out. Cheers