Dave Sr. from SWISCO responded:
May 7, 2015
Your roller housing does not look familiar. Take a look at our 87-180 roller. Yours kind of reminds me of this, but see what you think. Do you know the manufacture of the window? Check to see if any names or labels on the window frame. If you have an AAMA sticker, that would also be a huge help. Also check another window that has this roller, I think your wheel might be broken but I'm not sure.
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