In my #20. I don't believe I have OD 1 5/8" space available.
I opted for the OD 1 1/2" , even then it is a tight fit.
Also, the ID 7/8" maybe correct for the lead thread, on mine, no shaft or thrust bearing will fit. A ID 15/16 is a better fit.
Part number
3750K26 - Thrust bearing 1"...