The originals are bronze bushings that have an oil cup on top of the pillow block.
If you must pull your your unit for work access, there is a replacement with sealed bearings. I have lost the link to the source for them, I think Granger has them.
While you have it apart, I recommend replacing the fan capacitor inside the unit. The compressor caps are outside in the electrical box, no access issue there..
Basement air conditioner removal instructions.
Replacement blower fan
and other blower fanhttps://www.amazon.com/Coleman-Blowe.../dp/B00QVYM51G
I don't know your model#, so here is the 6535 service manual
, tell us your model# and I'll add the hot link if that is incorrect.
2000 Winnebago Ultimate Freedom USQ40JD,
ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy