So they always break, and that's just how they made, don't think you can get them to last, but the people selling them at futurama say you suppose to have them running half the time, because it will wear them out faster if you keep them running the whole time, So I'm waiting for the last 2 I have to give in and them im going back to hanging desk fans.
@SkunkPharm says the wire wears itself out because of A the zip tie keeping the cable in place is basically strangulating the cable while oscellating and the cable is almost threaded through the neck of the grip thing and down, if you can unthread it and have it come out of the housing, it will take a lot of stress of the wiring. Maybe give that a go.