I’ve had some cyclops rollers for just under a year. They’ve probably been used less than once a week (and no more than about an hour a time)but recently have stared making a high pitch scraping/whining noise as though the bearings are on their way out.

I’ve checked the resistance unit isn’t contacting the roller. They spin fine by hand, but once on the bike its like a train screeching on its rails.

Could they really be worn out? Has anyone else had problems?