Generally tonearm bearing never use any fluid to lubricate them. If they have a lubricant, it collects dirt and dust. so they are just dry.
Some may have a special coating to self lub. like dry bicycle chain lub?
Anyway, I would NEVER apply a liquid lubricant to a tonearm bearing.
(It might be that originally a fine lubricant is aplied in a very thin film form, just to keep the bearing from rusting..
If I felt 'compelled' to add a trace of lub, it would be with a toothpick, just touching the very tip of the toothpick with a tiny bit of lub, (not even a drop) and allow the tip of the toothpick to touch a few of the bearing balls.. between the balls.. or near the race.
And just let that tiny (nearly invisible) trace do the work.(I WOULD use the sort of bicycle white greaseless chain lub which dries and just leaves a trace of lubricant.. (it is a liquid and dries rapidly)
Some may have a special coating to self lub. like dry bicycle chain lub?
Anyway, I would NEVER apply a liquid lubricant to a tonearm bearing.
(It might be that originally a fine lubricant is aplied in a very thin film form, just to keep the bearing from rusting..
If I felt 'compelled' to add a trace of lub, it would be with a toothpick, just touching the very tip of the toothpick with a tiny bit of lub, (not even a drop) and allow the tip of the toothpick to touch a few of the bearing balls.. between the balls.. or near the race.
And just let that tiny (nearly invisible) trace do the work.(I WOULD use the sort of bicycle white greaseless chain lub which dries and just leaves a trace of lubricant.. (it is a liquid and dries rapidly)