After a while my Amscope SM series microscope started to squeek when pivoting it out of the way of my workspace.  The paint/powder coating had worn away on the very small surface that supports the microscope.

I got a thrust bearing and just needed a cage for it to solve the problem

uxcell NTA2435 Thrust Needle Roller Bearings with Washers 1-1/2" Bore 2-5/32" OD 5/64" Width 

Amazon: https://www.amazon.com/dp/B0B5XQWQXL

Suggest you print this with 100% infill at whatever detail level you wish.

Hope this helps someone improve their scope!