Need help identifying correct part

A quick learner from West Columbia, SC says:
February 19, 2018
So I am trying to replace the rollers on my sliding glass doors. Upon removing them I noticed two different pieces. The one on the left was missing a wheel and the one on the right looks like a hack job because i got replacements that looked like the one on the right and they don't seem to fit. I will add a photo of what the bottom frame looks like to help solve this mystery.

The width of the part is 3/4 inch. And it does have a screw tap from the top side
User submitted photos of patio door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
February 22, 2018
Thanks for contacting us! Take a look at the die cast 81-129 roller, and the steel body 81-282 roller. I believe the 81-129 is what they originally used in patio doors like yours, but later they came out with the 81-282. You mentioned that you didn't like how the newer steel body roller worked, so maybe the 81-129 is something to consider. I would just go over our dimensions in both cases to make sure everything matches up.
A professional from CA says:
February 22, 2018
For a dual glazed door I would consider 82-157.
Diecast Roller, 1-1/2" wheel
Diecast Roller, 1-1/2" wheel
81-129
$9.97
MI Patio Door Roller, 1-1/2" Dia. Concave BB
MI Patio Door Roller, 1-1/2" Dia. Concave BB
81-282
$6.20
Phillips Flat 10-32 x 1/2" SS Machine Screw
Phillips Flat 10-32 x 1/2" SS Machine Screw
33-103
$0.29
Phillips 1/4-20 x 3/4" SS Machine Screw
Phillips 1/4-20 x 3/4" SS Machine Screw
33-104
$0.39
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