A problem we see regularly is worn patio door rollers. In fact it’s a problem with any sliding door rollers such as van side doors or your rowing machine seat rollers.
The main cause for this is failure to keep the track clean and dry. One of the worst things you can do is to lubricate the track, either with oil, grease, WD40 or goose fat. Keep the track dry so the rollers grip the surface and rotate correctly around the axle/bearing. If you lubricate the track the rollers will slide rather than rotate. Eventually they’ll flatspot, plus you’ll get grit sticking to the oil. You can even wear the track out which can be very problematic to replace.
Think of your car wheels. They are designed to grip the road and rotate around the axle. You don’t want your tyres locked up just sliding on the ice.
Patio rollers completely worn down away down to the bearings. . Even the adjusting screw has mostly worn away. Fortunately for this customer they track was still usable.