Apologies for resurrecting a necro-thread, but this is the only place on the whole of the www where I can find any info about this bearing.
I recently picked up a V8 for a good price. It's in good nick, but there is some vibration and a bit of noise from the brush roll. When I gently tug on the bristles at the non-driven end of the roll (when it's not running) I can feel a bit of play - is this normal? - I presume not. The driven end is fine.
It's a bit difficult to assess the bearing play, because the bearing is loose on the plastic shaft until the brush roll is pushed on.
I was hoping to fully dismantle the assembly to get to the bearing, but it looks like it may be a one way ticket.
I did discover what looks like a suitable part on AliExpress - has anyone ever used one?https://www.aliexpress.com/item/1005005355468921.html