Just the wheel vs. the whole roller assembly

A quick learner from MN says:
May 4, 2021
Looking to replace wheels in Acorn slider windows. The bracket assembly is still good in most of the windows. I have used the 87-061 assemblies and sometimes just pop out the wheel to use in the old bracket. It is an easy repair without breaking down the window frame.
Is the 5/8 roller wheel available without the nylon bracket assembly? I see the 9/16 wheels, but would prefer to not use mismatched wheel sizes.
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Paul from SWISCO responded:
May 6, 2021

Greetings. The manufacturer of the 87-061 doesn't sell the ball bearing wheel separately, but our 87-058 that is slightly smaller (9/16") has served customers as a suitable replacement. Take a look and see what you think. 
Window Roller BB Wheel, 9/16" dia.
Window Roller BB Wheel, 9/16" dia.
87-058
$1.82
Acorn Slider Roller Assembly, 5/8" Flat Wheel
Acorn Slider Roller Assembly, 5/8" Flat Wheel
87-061
$7.01
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