Acorn 2500 series window frame roller units

A quick learner from Eastchester NY says:
The plastic bushings for these windows appear to be about 1.75 inches in length and about 0.75 inches in width. The highest height of the bushing is 5/8 of n inch and the metal wheel itself has a 5/8 of an inch diameter.
See the attached photos. The building has 178 units and a lot of the tenants are really in need of these replacement roller parts.
Any help would be appreciated.
Thank you, Jack
A customer submitted photo of a window frame roller.
Profile picture of Paul
Paul from SWISCO responded:
Thank you for posting. Please take a look at our 87-141 Acorn sliding window roller. Do you think this could be a possible replacement?
Profile picture of Donna
Donna from SWISCO responded:
Also, please see and compare your sample to SWISCO product code 87-061, Acorn Slider Roller Assembly.
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