Rolling/sliding glass window wheel bearing replacment.

This is a nylon wheel with ball bearing center to a clinic sliding door on the counter. It is threaded on the inside of the bearing, the screw holds it on the track. The one photo (0663) of the width of the wheel shows that one side of the wheel acts as a spacer. That is the side that is against the aluminum track. I can take more measurements and photos if needed. Thanks, Tom.