Do you mean alcohol like isopropyl alcohol, denatured alcohol or everclear?
I have actually found that denatured alcohol is very good at degreasing even some of the toughest grease. I recently repacked drill press bearings and used denatured alcohol in a sonication bath and they came out perfect. 100% actone works well too.
Mobil 28 could be a good grease if you are repacking and can handle extreme temps
I pull the shield off and swish them in WD-40, then drop some bike chain lube in the bearing. Usually spin them up with an air compressor so the extra lube gets distributed and flung, the shields get rinsed with water
It has different properties. Depends what is better… Usually it sticks more and is also made to take care of the rubber o-rings on most motorcycle chains, which bike chains don’t have.
But I do not think it’s ideal for bearings due to its high viscosity, but I don’t have data on that.
This is my routine once a year or so… and usually don’t need it just to restore to perfect bearings:
remove all bearings and remove all seals.
degrease the bearing- WD-40 or some other solvent based dry lube spray
remove particulates and degrease with 90+% IPA, shake around in a pill bottle or something.
rinse with hot jets of water while spinning by hand until they roll smooth
return to clean IPA bottle and shake more
blow on them hard or use air spray to blast most of the IPA off, dab dry with paper towel and let sit till completely dry
add a couple drops of Teflon dry lube and spin while the liquid evaporates.
glop in two big glops of white lithium grease and hand roll the bearings
shake seals around in IPA a bit, and gently gently wipe them clean after rinsing them in warm water.
reseal and gently wipe any excess lithium grease off the bearings.
after this, I’ve had old 10 year old zealous bearings that felt scratchy, extremely hard to roll, rusted, etc basically come back to live a great life again rolling almost new… and for newer ceramics this basically keeps bearings lasting forever.
and @Skatardude10 I wouldn’t use an air compressor especially if you ever do it when there is no grease in them. They can explode. Alot of guys on the Old wood Working Machines forum have had that happen to them.
I would probably use something with more wash out resistance that lithium grease. Old school guys used to use sewing machine oil.
And I just love lithium grease. I have used it for well over 20 years so far, going between that and regular skate lube like bones speed cream and I keep coming back to lithium grease, I find it keeps my bearings rolling smoother for so much longer. when you say wash out resistance, do you mean like something with low viscosity? Like, mineral oil compared to glops of grease?
When you clean a bearing of any kind, you want to either dissolve or displace all the old material and the particulate/contaminate trapped in it. Personally I use solvents like mineral spirits over pushing clean grease through because I can see when everything is completely cleaned of dirt and worn out grease rather than just waiting for the new grease to look ‘clean’
Denatured Alcohol in an cheap Ultra-sonic cleaner, amazingly PineSol is an amazing cheap degreaser
just don’t leave the bearings in solution forever. and anti-fling motorcycle chain lube are perfect. Yes a little more rolling resistance, but I have never noticed even minor resistance when free-rolling.