Sliding door rollers

I have a set of aluminum sliders from 1963 that don't slide. I removed one door, and popped the bottom rail to remove these two assemblies. They are quite heavy and have bearings in the wheels. The one without the plastic grooved "tire" is in good shape, but the other one is a bit bent up.

I'm wondering if I need to entirely replace both, or if it would be better (or even possible) to replace just the wheel and axle. I'll likely have two more in the same condition from the other door.

Photo with measurements is attached, and thanks for any guidance you can offer.

That's what I thought. I double-checked my measurements, and the height is actually 1 3/16", so the measurements match exactly. I just ordered four. Thanks for taking a look!