Sadly ariston 4 life, the bearings in this machine are non remove-able.
The drum cannot be removed, as the tub is sealed together. The front doesn't come off - even though It looks like it can, that's the reason for the repair man replacing the whole tub assembly, and not just simply replacing the bearings, and spider, as that's all that probably would have been needed.
They do this deliberately so that when your guarantee ends, and bearings break, to fix it would require quite a lot of money to put it right, puts people off, and they go buy a new machine. or if its under extended parts guarantee, then they usually get written off - so no cost for Indesit company, yet in the 5 years parts your not covered for a free replacement.