Ball bearings or not?

A home owner from Florida says:
How do I know to use 23-070 or 23-086? They look the same. One has ball bearings and one does not. Is one better than other? Would either be compatible with my mirror doors that currently have COX 21-717 21-767?
Thumbnail of the uploaded file named image.jpg
Profile picture of Bob
Bob from SWISCO responded:

The 23-086 ball-bearing version of this concave roller can simply hold a greater load and is a bit more durable. Otherwise it's functionally the same roller. So long as your old roller has a concave wheel and the dimensions line up, I do believe this type can work for you. 

Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 4-7 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at 856-317-6263 or at