Bottom bracket newbie question

[bikeworkshop]

I don't understand what this means.
Can you please explain?

There are two lengths of taper on the end of a "square taper" axle.

You really ought to use the right one. If it's a shimano chainset, it'll be j.i.s.
Most other brands are too.
Campagnolo and other European quality racing chainsets are ISO.

Here's the lowdown:
https://www.sheldonbrown.com/bbtaper.html

Skip the first bit, youre dealing with cartridge bb.
It's the stuff about the tapers you need to read.

 

[Jimmy2021]

Bloody hell!
Why is it so complicated???

 

[Jimmy2021]

BTW, I removed the bb and it's 107, not 122.
I managed to remove the other cup, pretty easy using a 40mm waste pipe and rubber mallet, it fits perfectly.
the other one I have is 113, so no good I suppose.
Can you direct me to the correct product, as said, possible something cheap

 

[bikeworkshop]

I'll look in the Italian bb drawer tomorrow and see if we have a used one

 

[Jimmy2021]

I'll look in the Italian bb drawer tomorrow and see if we have a used one

Thanks.
Otherwise I have to take this frame to the scrap yard.