Was reading a UK article awhile back on the recent trend towards higher and higher final spin speeds and early demise of washers. Basically the upshot from the writer was that after 1200 rpms, any furhter increase in spin speed does not equal that much greater extraction, but does place considerable stress on the washer. This stress translates into shorter life span.
If the washer is stable and spins totally free of shaking and such, then uber-high speed spins aren't that much of a problem, but as anyone knows not ever single wash load in a front loader spins thus. Even mild to moderate shaking causes stresses on the bearings and other internal parts, leading to premature wear and demise of the appliance.
Having seen a 50lb SQ front loader shake so violently during final spin one could feel the vibrations coming up the concrete and tile floor several feet away; not withsanding my previous query am not sure want to be around if that same machine spun at >120 rpms under those conditions.