Strange Bafang g06 bearing issues

[Chargeride]

I swapped out the internals into another hub casing and changed the freewheel side bearing out to the one from the original hub.

When I went to put it together, the bearings internal diameter is too large, but it was the original one that came with the new internals

You can see the bearing mounts are different sizes, they are both 750W versions, but I cant understand how the bearing fitted its original shaft, its the same bearing.
Do they have some kind of spacer that takes the shaft up to the larger size, I don't feel I lost anything.

This is the bearing from the brake side, which I swapped over to the new hub case freewheel side to make it fit, the bearing on the left is the original freewheel of the smaller shaft and its now to big.

Am I going crackers, is there a shim to space it out that I've dropped?

 

[Ebikebuilderyt]

i have a G62 from greenbikekit with a mfg date of 2020ish maybe 2021, and it has an 8mm shim (which I think you may have lost) to space out the metal cover with the brake disc. This particular motor seems to have an issue with the axle, not sure if its greenbikekit is getting funny motors with QA defects / old designs, or what. But I would be curious if you have a greenbikekit g62 and ever had any funny curiosities with it.

then I have a g62 from grin tech, that i bought about a year later, so mfg date after 2021/22 ish, and it no longer has that 8mm shim, I think the axle just has a chunky part on it. And only a thin 0 ring is necessary. Like on the opposite side on top the clutch assembly. On this motor axle the 2 locknuts seem to thread on to the correct spot and I dont have any issues with it

The 8mm shim in my one motor must be some rusty-type of metal cuz it seems to be all surface rusty and rusting things up after a few years. Might be some interaction with grease

I have some pictures here I sloppily made while i had two motors out trying to figure out what Im doing with my life. Here they are:

I enjoy your channel by the way, love that fat Hub on the bmx !!