extruded rollers have been crushed, need replacement

A home owner from Northridge, CA says:
August 1, 2012
I have extruded rollers for our double pane windows. The windows are heavy and have crushed and reduced the rollers to flat sliders. The brackets are grooving the bottom of the window frame. Do you have an equivalent replacement. 3 1-2" screw shown for scale.
A customer submitted photo of a window roller.
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Paul from SWISCO responded:
August 2, 2012
Good morning! Thanks for posting. While we don't have an exact replacement for this hardware, please take a look at our 87-173 Window Roller. Does this look like it can work as a substitute? Compare it to your existing roller and let me know what you think!
A home owner from Northridge CA says:
August 2, 2012
We looked at that part before I posted this thread. It has one mounting hole. Do you think it will bear the weight of the window one hole? I think the style will work as a physical substitute. Not sure about the mounting?
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Casey from SWISCO responded:
August 6, 2012
Thank you for your patience in this matter. We actually may have found something that's a bit closer to what you need. I will post again in this thread as soon as I have more information available for you to view!
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Casey from SWISCO responded:
August 27, 2012
Please see new SWISCO product code 87-196, Sliding Window Roller Assembly.
Window Roller, 1/2" Flat Wheel
Window Roller, 1/2" Flat Wheel
87-173
$2.32
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