Mirrored sliding door - broken plastic wheel

A home owner from Delta, BC, Canada says:
Hi,
The plastic wheel to one of my closet mirrored sliding doors broke - it's 1 1/4" diameter. Nobody knows what the part is (took it to Home Depot and a specialty doors place) because there are no markings. the 'top' part is shown on the left each time, the rubber portion is stamped 'COX 21-707'. These doors were probably installed around 1987-88.

The part itself is 2 3/8" long x 2 15/16" wide, the wheel is riveted on. The top section seems to stay up with pressure only.

The door is useless like this, very heavy, and currently off the track totally in the way. I'm quite frustrated that nobody seems to be able to help. I'm hoping you can!!

in greater Vancouver
thank you
Michelle
User submitted image of their closet hardware.
Profile picture of Paul
Paul from SWISCO responded:
Hello, Michelle. Please see our 23-090 top guide and 23-086 bottom ball bearing wheel assembly. The concave wheel is 1-1/2", but it is adjustable, so that should help make up for the difference. Let me know what you think!
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