I'm following this design concept. Ron, Carve, and Coogrr are my heros.
I just bought a set of 100 for $35.00 shipped. A local bearing supply wanted $4.05 EACH!
I laffed in his face.
As long as your belts are in alignment, I don't see the problem with using a stationary flange or even a coathanger. You wouldn't be putting that much force on the side of the belt to cause wear. I would guess that during a JOG would be the most chance for this to happen. Yes?