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Hi All, Just to keep you up to date. I have now sourced, or had made, just about every bearing in the Bosch Active and Performance line and CX motor. I have also added a video on how to change these bearings. The link can be found on my "how to" page. https://www.performancelinebearings.com...

People asked for a "how to" video on stripping, changing bearings and re-building a Bosch motor. So I did one! Yes, I know, I have the voice of an undertaker and a face for radio but hopefully it may help if you're wondering if this is something you can do or not, once your bike slips out of...

Hi Bicyclista, If you search "bike cable clips" on Ebay, there are loads. Bought a pack for my Haibike and all is good again :)

Good questions! If your bike is under warranty, the motor should be replaced by Bosch through your Bosch dealer. If you don't want the agro or the down time it takes for them to send your motor away for repair/replacement, then looking after your bearings is or changing them yourself is your...

From what I can gather, it happened from the first motors and is still happening now. But it's still not a bearing issue! It is a seal issue. If you get water near these bearings, they WILL fail. The seal mod offered by Bosch can only help if you replace the silicone grease on a very regular...

Many people put main motor bearing failure down to high torque loads, but compared to other bearing applications, the main motor bearing in a Bosch motor gets a pretty easy life. If failure was due to high load issues, the bearing would be worn but not destroyed and full of rust! They should...

I currently supply the e-bike shop so everyone can have a bearing no matter who they bought their bike from by buying from me :) Hopefully they will stop selling the Enduro bearing as they run out of stock. The "MAX" designation is for a static bearing, not a max strength bearing.

The main motor bearing is, or should be a 5 minute job. Just remove the right-hand engine case (provided you have the crank release tool and drive sprocket tool). This bearing is a very thin bearing and generally drifts out the housing quite easily. I understand that most people don't have...

Don't panic Tompat, if they are still not available from Bosch, I'll have another load made. :)

Why? you can now buy the bearing. And it's probably cheaper than a machined sleeve etc. Oh, by the way, it's not 9mm thick either.

Hi Tompat, There is a lot of misinformation out there. If you look at the photo the left-hand bearing is a standard 6004 bearing, as can be found anywhere. On the right is the Bosch version of a 6004 bearing. Note the difference in thickness of the inner race. If you fancy honing that out to...

Thank you. I thought exactly the same thing about 6004 bearings. Like many others, I bought one and it didn't fit! Although the Bosch bearing has the 6004 designation, it has a completely different sized inner diameter and will not fit the crankshaft. As for the seal type, I too had the same...

I found my left bearing (also open to the elements) had failed. So, not impressed that I couldn't find one! And being out of warranty, it was looking like a new motor! I had them made. If anyone is stuck for this bearing I have done a site and how too guide. You can find it here...

Hi Dmitri, I have a page and site to help people with this issue. I have attached a pdf that should help you identify your bearing. Hope it helps?

Hi All, Following the failure of my left-hand main crank shaft bearing in my Bosch Performance Line motor (identical bearing in the CX and earlier Active line) I tried to hunt one down. For three weeks I tried contacting every bearing supplier I could find, eventually tracking down the actual...