Sprocket Carrier Bearing Failure

[kgm]

Evening all,

Taking the rear wheel off to have a new tyre fitted tonight I discovered that the rear sprocket carrier bearing on my ER6 had disintegrated. Easy enough to replace however I'm wondering whether it's worth replacing the wheel bearings at the same time? Both appear OK but I'm tempted just to do them whilst I'm in there already. Anything else I should look for damage wise or replace out of caution? No idea how long it's been like that (surprisingly there was no play in the sprocket) so I reckon it can't have been goosed for more than a few hundred miles.

Advice appreciated, as a side note there's only 15k on the bike so not too impressed. Best guess is that the seal has been damaged at some point and water has gotten in.

[Beehive Bedlam]

For what they cost vs the inconvenience they can cause should they fail on the road you might as well.

[Copycat73]

I replaced all associated wheel bearings on my ZZR14 with SKF items because the OEM items are not fit for purpose .. and mine had less millage on than yours.

cost was some thing like £50 ..
I pealed back the seal and filled them full of a suitable lithium grease

some one I know got stung in Switzerland to the order of £300 ish because his failed at the side of the road..

your bike your choice...
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[bugeye_bob]

If you have a bit of time you can find the bearing and seals very cheap,
either looking on the bearing for the size or FAQ on the ER forum.

[ThatDippyTwat]

As said, searching for bearings by size and rating is almost always a lot cheaper than searching by the bikes model name, irrespective of what bike you have.

Plenty of decent online bearing suppliers in the UK, and don't forget your local industrial estate, it's not unusual to find one on there.

[kgm]

I do have a friendly source for the bearings so I reckon I may as well do them all. Cheers folks.

[Kickstart]

Hi

Sprocket carrier bearings can be affected by an over tight chain, or someone missing out the spacer between the bearing and the wheel. Not unknown for tyre places to lose the spacer so worth a check.

The carrier bearing is the easy one to change compared to the wheel bearings, but also often a larger and more expensive bearing. As such being a tight git I would check how the wheel bearings felt, but any sign of wear or lack of smoothness then change them as well

All the best

Katy
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[kgm]

[Azoth]

I don't have an ER6 but it's helpful to have the bearing sizes for different bikes on the internet, because we all pay far too much for things like bearings and seals from dealers and parts suppliers.

Damaged bearings will look damaged. Good bearings will look intact but maybe a bit dirty, with the rubber holding in the balls and the grease.

Just look for unusual play when you put your finger in and wiggle it. When I put new bearings in recently, I noticed that the old bearings were good but they had some play, perhaps caused by loss of aluminium (in the bearing seat, i.e. the wheel) from tiny grit particles when they were inserted. I had to do something to resolve that. Make sure the bearings are a tight fit. It shouldn't be easy to put them in or take them out.
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[Kickstart]