Shimano UN-100B23X bottom bracket ok for a Bafang mid-motor build?

bgmate

New Member
Region
Europe
I'm looking into buying this bike for my first build.
https://www.bikester.co.uk/serious-shoreline-20-M1093385.html?vgid=G1704332

I read that it's important to have the correct bottom bracket. Bafang BBSxx motors have a bottom bracket shaft diameter of 33.5 mm.
This bike comes with Shimano UN-100B23X. After some searching it appears to be 68X122.5 mm.
But I can't find any info about the diameter.

Also read somewhere it might not be good because some part of it was plastic. Not sure why that would matter since we remove everything before the build.

Some links I found:
https://bike.shimano.com/en-EU/product/component/tourney-tx800/BB-UN100.html
https://bicycles.stackexchange.com/...g-un300-and-un100-new-shimano-bottom-brackets

PS. I live in Europe
 

Gionnirocket

Well-Known Member
Region
USA
City
Y. O.
I'm looking into buying this bike for my first build.
https://www.bikester.co.uk/serious-shoreline-20-M1093385.html?vgid=G1704332

I read that it's important to have the correct bottom bracket. Bafang BBSxx motors have a bottom bracket shaft diameter of 33.5 mm.
This bike comes with Shimano UN-100B23X. After some searching it appears to be 68X122.5 mm.
But I can't find any info about the diameter.

Also read somewhere it might not be good because some part of it was plastic. Not sure why that would matter since we remove everything before the build.

Some links I found:
https://bike.shimano.com/en-EU/product/component/tourney-tx800/BB-UN100.html
https://bicycles.stackexchange.com/...g-un300-and-un100-new-shimano-bottom-brackets

PS. I live in Europe
Seems like the base Tourney hardware so I'd guess that you are good.
Perhaps give a local bike shop a call as they probably have one on the shelf.

edit: Cross referencing here.... Top of the list seems correct again
 
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