Rollers worn,

A home owner from Saint Cloud, FL says:
18 yrs old?Sliding living room doors do not slide smoothly? worn rollers (all metal)
I also suspect that the rails are worn also, is there a way to fix that.?
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Tom from SWISCO responded:

I'm not sure that we have an exact match for this roller, but we sell a few that are similar. Please see our 81-046, 81-057, and 81-249. Review the dimensions listed for each to determine if any of these would be a viable alternative. 

Alternate image for 81-046
Alternate image for 81-046

Alternate image for 81-057
Alternate image for 81-057

Detail of 81-289
Detail of 81-289

Alternate view of 81-289
Alternate view of 81-289

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