Wrist ZH30/45-2 instead ZH30/45/60-3

Hello,

I have problem on my KR30 KRC2. Oil leaking on 4th reduction gear(wrist ZH30/45/60-3).

My question is, if I can change it with new wrist ZH30/45-2 From KRC1?

The fitting should be the same, but what about gear ratio?

Did someone change it already?

Can someone check if the fitting and gear ratio is the same or not?

I would need answers ASAP.

Many thanks, Gasper

I know, but don’t have $mada from robot which is for spare parts(ZH30/45-2)