Is there a reason for the bearings in a front loading machine to keep needing to be replaced

There are a few reasons why the bearings will need replacing on a regular basis and they are
1 the bearing is not a good fit in the bearing retainer meaning that there is slackness.
2 inferior bearings are being used , (most supplyers have alternative makes as replacements) sef are good bearings
3 the dammpers on the machine are warn or damaged allowing the drum to have excessive movments
4 constant over or underloding of the machine if you under load then the when on a spin the item unbalances the drum by adding weight to only one area making it spin a bit like wheel wobble on a car ,over loading has a simalar effect but this time it a weight problem, for the machne to have it best chances, it needs to be balanced never open machine unless the power is removed, another reason is the drum spider has not been replaced at the same time as the bearings most spider shafts become pitted with age and damaged on bearing removal if there is damage to the shaft then water from the machine could get past the seals and start attacking the bearings (a spider is a device that attaches the drum to the bearing shaft) normally replaced at every bearing change

It could be that the new bearings are being fitted onto a worn drum shaft, this would soon cause the bearings to fail again.
If it has not been replaced, then it should be done so.