Roller assembly from large sliding window

Question

The photos featuring the tape measure, are metric scale. It seems that this wheel and bracket assembly was metal at one time, now the bracket is black plastic. The flat wheel is ball bearing.
thank you for your help.

Bob · Accepted Answer

Thanks for posting. See the 87-186 Sliding Window Roller. Compare and see if this matches what you seek.

Alternate image for 87-186