You have lots of items that are close and may likely work ...so here we go.
I have included 5 pictures. The Outside diameter of the flat brass roller is 9/16".
The pin (.172") that holds the roller is worn along with the elongated hole in the roller. As a result, the rollers are recessed and the slides vinyl on vinyl. The overall outside dimensions of the Double Roller Assembly are used on a few replacements ... Good News! I think a Dual Ball Bearing unit would be great but I would settled for a replacement that allowed us to open and close this window with just one hand! Many Thanks, Allan
Casey from SWISCO responded:
March 4, 2024
Hello, Unfortunately, we do not carry an exact match for the window roller shown in your photos. If you're able to reuse the housings, take a look at the 9/16" diameter 87-058 wheel and axle. We'll include the measurements from our product page below. Thank you! Side view of 87-058
Profile view of 87-058
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