What closet door rollers do I have? How many do I need?

A home owner from USA says:
Dear Sir or Madam,

I am trying to replace some sliding door hardware as the doors do not move easily. I have taken photos (see attached) of the doors, track and hardware and could use help in selecting door rollers. These are large doors as the overall opening is 96".

I believe the closest item on your website is the 23-006 or 23-007. Ideally I would like to have the ability to adjust the height of door roller set after installing.

Please let me know what you recommend. Also, I am thinking it might be helpful if I use three door rollers per door rather than the two since the doors are so heavy. Again, I welcome your suggestions.

Thanks,
Rick
A customer submitted image of their closet door hardware.
Profile picture of Paul
Paul from SWISCO responded:
Thank you for posting. Your sample image does look similar to our 23-006 and 23-007, but I can't say anything for sure without knowing more information. What is the diameter of your wheels?

As for how many to use, our 23-006 and 23-007 are meant to carry doors weighing up to 75 pounds.
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