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Front wheel bearing install


Loftur

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Hi,

a question regarding pressing in new front wheel bearings.

 

When both bearings are pressed in should the spacer between the bearings have play or be firm between the bearings?

 

When i press in my bearings to the end my spacer is firm, no play, and when i turn the inner ring on the bearing on either side, the inner ring on the other side is also rotating.

 

Do you think it is correct if the bearing rings turn together?

 

Ther spacer is No 7 in image below.

 

Hope i made myself understandeble, not native english speaker.

 

Thanks.

image.png.b68d2481b1c34226751e9c8366ecfc46.png

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That’s correct 

 

You're the first one to change them on a 2015 bike as far as I know, had a problem?

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5 minutes ago, Thumbs said:

That’s correct 

 

You're the first one to change them on a 2015 bike as far as I know, had a problem?

Thanks, sounds great i installed correctly.

 

Why i wonder is i compare to a car where left and right wheel turns with different speed and thought that also might happen on left and right bearing on a mc...... but perhaps not have any effect on a mc wheel bearing.

 

First to write a question perhaps but not the first to change bearings i hope.

My bike had rolled 30000km when i changed them

 

The only problem is getting the first bearing out, nothing to hit on when both bearings are in place.

I used  this tool on ebay:

https://www.ebay.co.uk/itm/160879465873?epid=194347936&hash=item257529d591:g:Nx0AAOxy3lFRBVZd

 

 

 

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Left and right bearing do not turn at different speeds.

Because they are attached to same ONE wheel.

This ONE wheel is solid and all parts rotate at same speed.

This ONE wheel has only ONE contact patch.

Which travels in only ONE path around corner.

 

 

BTW - auto wheels have inside & outside bearings too. For 4 bearings total.

However, two bearings on left wheel ALWAYS turn at same speed.

And two bearings on right wheel ALWAYS turn at same speed.

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28 minutes ago, DannoXYZ said:

Left and right bearing do not turn at different speeds.

Because they are attached to same ONE wheel.

This ONE wheel is solid and all parts rotate at same speed.

This ONE wheel has only ONE contact patch.

Which travels in only ONE path around corner.

 

 

BTW - auto wheels have inside & outside bearings too. For 4 bearings total.

However, two bearings on left wheel ALWAYS turn at same speed.

And two bearings on right wheel ALWAYS turn at same speed.

Exellent and logic sum-up of that bearing stuff.

Thanks, makes sense.

 

 

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There is usually a specific installation sequence for the bearings, where one gets driven home fully into the wheel, then the distance collar is inserted, then the second bearing gets snugged up to that. When the wheel is clamped by the axle, the bearing inners and spacer get pressed together and ideally you don't want any side load on the bearings. By driving the first bearing home fully, the final position of the wheel on the axle is positively known, without which you can have a small misalignment of the front and rear wheels which causes a bit of pull to one side or another. 

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I used a Rawlbolt expanded to grip the bearing innner and hit that, also great for blind bearings

 

 

E4F6DC7A-A6E3-49D0-B2D5-EB93DB35CA97.jpeg

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On 9/1/2021 at 12:16 AM, Thumbs said:

I used a Rawlbolt expanded to grip the bearing innner and hit that, also great for blind bearings

 

 

E4F6DC7A-A6E3-49D0-B2D5-EB93DB35CA97.jpeg

Well that's something I never considered, great idea. 

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Some Kawasaki's only have a bearing shoulder on one side of the wheel. As above you fit that side, then put spacer in the wheel, then fit the other bearing until it meets the spacer.  First time I saw one I thought the wheel was broken. 
 

As to knocking out bearings if you don't have a puller, the spacer normally can be moved to one side to allow access to the outer bearing shell to drift it out.

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On 8/31/2021 at 3:47 AM, Loftur said:

 

My bike had rolled 30000km when i changed them

Just curious. For what reason did you replace the front wheel bearings? Had one or both failed? Seals damaged?

 

Only 30,000km and the need to replace wheel bearings sounds very unusual!

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