I think it is possible, when you take the tub out of the mashine you have to make 20-25 holes for bolt M5x2o, then you can cut the plastic tub, separate front part, remove drum and take out semering and bearings. After replacement the new bearings kit with semering use silicon before you put together cut parts, then use bolts to secure tub from separation during the washing. The same principal is for other brands like Indesit, Candy etc. New tub with bearings is too expensive, this method is cheaper.
I did myself few Indesit on this way, they stil works. Good luck with replacment.
No, i never cut Beko, but this is the perfect way to find is it possible, someone had to try and share his experience with us, that will be answer is it possible or not.
If sebakow1 try and do it he will spare some money, if not he can always buy a new drum.