I saw a thread on Reddit regading a worn Y-Axis belt on a CR10S Pro V2, and thought I would check mine. Fortunately it looks OK, however I can see a potential problem with the alignment of the pulley (or maybe its fine since it's not worn). It looks however as though the tensioner should be a few mm lower. The simple fix would be to just raise or lower the gear, but since mine is working nicely and shows no sign of wear, I'm not touching it unless that changes. It may be that when there is wear, it is due to the gear being set just a mm too low, causing the belt to be dragging down on the idler which is a couple of stacked flange bearings.
After thinking about this, I think the way mine is set up is correct (and of course I had nothing to do with that :D). I think this because one edge of the belt is held in place by the lip of the flange bearing, which probably helps it to stay in position. Also with the belt biased to the lower bearing on the idler, it may keep it from wandering or distorting as much (vs being centered on the idler between the flange bearings). Likely the belt is just lightly riding on the lower flange bearing, but if there was more pressure there, it would probably be worn.
After thinking about this, I think the way mine is set up is correct (and of course I had nothing to do with that :D). I think this because one edge of the belt is held in place by the lip of the flange bearing, which probably helps it to stay in position. Also with the belt biased to the lower bearing on the idler, it may keep it from wandering or distorting as much (vs being centered on the idler between the flange bearings). Likely the belt is just lightly riding on the lower flange bearing, but if there was more pressure there, it would probably be worn.
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