Sliding Window Part Identification

A quick learner from USA says:
I am trying to identify and order the attached sliding window roller from a window installed in the early 80
User submitted photos of window hardware.
User submitted photos of a window roller.
Profile picture of Paul
Paul from SWISCO responded:
If possible, I'd like a couple more pictures of the roller, preferably removed from the window. I need a better view of wheel and housing. I will also need your measurements.
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