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Front Wheel Bearings

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(@russnock)
New Member
Joined: 3 years ago

Hi

My front wheel bearing has gone and the supplier couldn't find the part number for it.

Does anyone have any recommendations on what one's I need and the best grease to go with it.

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(@freddie)
Joined: 2 years ago

Eminent Member
Posts: 19

Posted by: @russnock

Hi

My front wheel bearing has gone and the supplier couldn't find the part number for it.

Does anyone have any recommendations on what one's I need and the best grease to go with it.

I ordered two 6201-2RSL bearings. These are double sealed and low friction bearings.

I use Motorex 2000 grease. Bought it when i build my own bike. I use it for all kinds of applications. Including bearings.

 

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Posts: 1
(@nicholas)
New Member
Joined: 2 years ago

Hello. Did you find what type of bearings you need? I have the same problem.

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Posts: 19
(@freddie)
Eminent Member
Joined: 2 years ago

My bearings are also gone after 20k km. The one on the caliper side is bad, but the bearing on the right hand side is really crunchy. A lot of play in the bearing.

I just take a look at the bearing- and sealnumbers.
Bearing: 6201RS. If i am correct, the first digits is a ball bearing serie number. Last 2 characters tells something about the type(?). In this case a single sided sealed bearing.
Dimensions of the bearing is: 12x32x10 mm (inner diameter x outer diameter x height)

I ordered two 6201-2RSL bearings. These are double sealed and low friction bearings.

The seal is a 20x32x5 mm (oil)sealring. I ordered 4 of them. Just an extra set of spare seals can't hurt.
Total price of the 4 seals and 2 bearings: €33,45 (including €5,95 shipping costs)

I just ordered them at an online bearing-shop:
https://www.lagerkoning.nl/

I have to see how to install the bearings myself.

I hope somebody can use this information in the future.

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3 Replies
(@sbcwylie)
Joined: 2 years ago

New Member
Posts: 2

@freddie I've got bearings and seals on order, thanks for providing the specs. When you re&re'd your bearings, did you find an internal spacer between the two bearings themselves, within the hub?

Thanks for any info.

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(@freddie)
Joined: 2 years ago

Eminent Member
Posts: 19

@sbcwylie sorry for the late reply. I almost never look at the forum. Only when i have problems (engine management light goes on and i have no drive). But yes, there was a spacer between the bearings. (I hope by now you figured out yourself there was a spacer 😉 )

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(@sbcwylie)
Joined: 2 years ago

New Member
Posts: 2

@freddie humourously, yeah, this is a little late - the set I replaced back then are failing as well, and will be replaced in the next couple of days. The friend of mine that replaced the bearings was surprised there was no insert between the two of them, but he's going to fab one when he does this set.

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dobis
Posts: 5
(@dobis)
Active Member
Joined: 2 years ago

Hi.

I own a CPX since 2022/05 and I am trying to understand the problem because I'm not an expert.

The front wheel has two bearings? Each in both sides of the axis? And they need a sealring?

My CPX has only 1.900km. How to know the bearings are gone? Are these parts included in warranty? Is it possible to change then by your own without special tools?

Thanks.

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(@lostit)
Joined: 2 years ago

Eminent Member
Posts: 44

@dobis Bearings are considered a wear and tear item and will have a warranty of one year in most countries. Bearings are on the left and right of each wheel, German then Japanese bearings are the best in the world.

You can replace the bearings without replacing the race if it's not scored, if it's scored you'll need a bearing press. From personal experience now I've got money, I'd pay a garage to do it. You can do it yourself but you'll likely ruin the race and your bearings doing it.

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(@freddie)
Joined: 2 years ago

Eminent Member
Posts: 19

@dobis the front wheel has 2 bearings. One on the caliper side and one on the other side. The bearings are "protected" by seals, so water and debris can't get to the bearing. The life of the bearing wil be longer.

A trick to check if your bearings are starting to wear out, is to lift up the wheel free. Take the wheel with your hands and try to rock it back and forth. If you feel play, your bearings are wearing and need to be replaced.

I don't think bearings are warranty, but after 1900 km. worn bearings is not normal.

I changed the bearings myself. It's not really difficult, but it can take some time. I used a hammer and driver/pin (old screwdriver can work too) to drive out the bearings. Just take small steps to drive the bearing out. I used a socket and hamer to drive in the bearing. Make sure you use a socket that has the diameter of the outer shell of the bearing. And make sure it is a littlebit smaller than the diameter of the bearing, or else it wil get stuck in your wheel. Drive them in and press in the new seals by hand.

(i hope you are driving your CPx with no problems! 🙂 )

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Posts: 19
(@freddie)
Eminent Member
Joined: 2 years ago

I just replaced my second set front wheel bearings. With no maintenance they lasted for 22700 km. The new ones are SKF 6201 2RSH C3 GJN bearings. These bearings have different grease in them. Polyurea-based-grease. Hope they last i little longer. We will see.

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