Re-grease metal shielded ball bearing.

[@1965Leonard]

hello Dagbjorn. I did this today as you instructed. Works perfect. You are a genius. Thanks.

[@grumpy_old_man]

Thank you very much Markus, that was very nice to hear! I am glad you found this trick helpful :-)

[@1965Leonard]

@@grumpy_old_man It was impossible to remove the bearing. Old parts. Now i can use this wheel longer.

[@jssamp4442]

If drilling a hole into a bearing instead of simply popping the seal off is what you call genius, I would not want to visit your village.

[@johnwade5747]

Why don't you just blow air around the gap between the inner race and the tin seal like I do?they pop right out. Even if it distorts it a bit,the tin can be straightened with your thumb. P.S; never fill full because at high speeds it will not only swell and fly out,but you don't want heat transfer. I rebuilt all the tuthill fillrite pumps,12v.and 110v.for an oil co. for 22 years. Had good results.

[@grumpy_old_man]

Thank you very much for your input John Wade. I have tried a couple of times to pop the metal shield but found it hard to get it to stick and stay in place, therefore the drill operation ;-) Regarding the "overfilling" of grease, i will keep that in mind! I have "regreased" a couple of drills, a grinder, a multi saw and our trusty old Kirby vacuum cleaner. So far i have had no issues and the equipment is running smoothly :-)

[@pierrelombaard820]

Some of the comments segest, just take the seal out with small screwdriver Wash out and refill maks 50% to prevent oveheatin Observe the damage on the removed seals Usually very limmited Just bend the shape back Bearings that has run dry or seazed are scrap Better to do maintenance in time

[@keithscott9774]

You don't have to drill a hole in the shield and risk getting the last bit of cuttings inside the bearing. The shield also has a hole in now, which kind of defeats the purpose of a shield. You can clean the bearing simply by submerging and rotating. Grease easily pass through the gap between the shield and the race so any simple setup with drilled wood or whatever that allows you to pump grease through the bearing will work. There's already a video kzbin.info/www/bejne/n2GoiauifsqnmqM of a guy who's done that. He uses his little drilled wooden block to blow compressed air through the bearing after submerging in solvent, then once it's clean, pumps grease through. He first used a vacuum to suck grease through LOL, but finished with a grease gun.

[@grumpy_old_man]

Thank you very much for your input and link, smart way to do it :) For my use, the bearing i have done this with are placed in a sealed compartment, if you know what i mean. The drilled hole is in the back of the bearing holder, which is sealed as i mentioned. I think i get all the shavings out since the drillbit is magnetized, but i could not be a 100% sure of that off course. But after over 1 year of use in my drill and vacuum-cleaner it is still working flawlessly ;-)

[@rodenreyes6320]

How about grinding(filing) out with tiny carbide bit until it has thinned up enough so a tiny hole can be pierced with a pointy awl...problem with filings getting into bearing solved...

[@Hermes-t6z]

What a great idea 👍 thank you

[@KiIIerJo]

ok... how to grease a sealed bearing without removing it from the part?

[@chrishayes5755]

could use a tack welder (used to make battery packs) to seal the hole with a little piece of metal

[@nejoh713]

The powder of steel will stay inside, damage bearing.

[@grumpy_old_man]

I think i get all the shavings out since the drillbit is magnetized 😉

[@albertross1039]

How would you know that you didn't hit one of those ballbearings with the drill bit

[@grumpy_old_man]

By being extremely careful ;-) The shield is reasonably soft and easy to penetrate but the balls are extremely hard and will slip away when you penetrate with the drill. But you should barely penetrate the shield. I have not yet managed to make a scratch on the balls by doing this, unless the ball bearing is completely fixed without the possibility of rotating.

[@tigerbalm666]

Umm..I drilled but when thru the whole thing...wut to do?

[@grumpy_old_man]

Hi tigerbalm, I am really sorry to hear that. Did it go straight through and out on the other side? If so, I believe your bearing is beyond repair. You have used to much force when drilling. Be very delicate and you will feel when the drill penetrates the shield and stop the drill at once when you feel it. I hope this was helpful?

[@fatkorn]

Go slow, keep heat build up to a minimum, put a gob of high temp bearing grease on the drill, it will capture the chips jus fine. Clearly this is a temp fix of a non-critical failure point (no loss of money or injury).

[@mititeimaricei]

HECK NO! Metal shavings? Hole in the seal?

[@grumpy_old_man]

I think i get all the shavings out since the drillbit is magnetized 😉

[@Thanks4yourattention]

What a nice man I would be concerned with happened to the metal shavings from the drilled hole being stuck in the chamber with the bearings. Where did they go please?

[@grumpy_old_man]

I have not yet experienced that metal shavings have entered the ball bearing. So how it affects the ball bearing I do not know. But as long as you drill holes from the underside, gravity will do its thing and the metal shavings will fall down. But you can also put a small magnet on the drillbit and the metal shavings will stick to the drillbit. I hope this was helpfull.

[@daveharms5153]

Yeah...hold the bearing in YOUR HAND while you drill through the cover!!! Sheesh!

[@grumpy_old_man]

Yeah, I should probably have worn a helmet and safety shoes :-)

[@chrishayes5755]

@@grumpy_old_man did you engage your safety squints while drilling sir? I hope so.

[@MrFryfish]

..have you ever use a hand drill? Is not for faint heart.. it can even twist your hand; badly; Hilti one... Let our author show us more risky business.

[@nicholaslandolina]

Just use a pick and take the shield off

[@TheMaratbilgin]

sonra bir daha takama....

[@franciscoduran3688]

Great!°

[@grumpy_old_man]

Thank you 👍

[@vasanthakumar7896]

I am afraid that the Grease will drain due to heat from the same hole.

[@grumpy_old_man]

I thought so too at first, but after 1 year of using our Kirby vacuum cleaner (which is used a couple of times a week) there was virtually no leakage of Grease. So I recommend you try it and judge for yourself after using it for a while. But of course it also depends on the quality of the grease you use.

[@keithscott9774]

It that's the case then grease would drain from the gap between the shield and the race. Shielded bearings are not sealed bearings. Many bearing greases are rated for high temperature running and that's why they get called high temperature bearing grease (HTB). They don't simply "melt" and run out.

[@geoeconomics5629]

Good job nice work

[@grumpy_old_man]

Thank you very much :-D

[@wwaldes]

[@arc-sd8sk]

you can just take the clip off that's holding the shield lol

[@TheMaratbilgin]

Ulan gerzek klipsi olmayan rulmanlardan haberin yok mu?

[@jssamp4442]

What is the point? Now you have a greased but worthless bearing. Could have saved the time and effort and just tossed it in the scrap metal bin. Some people are too dangerous to be allowed near power tools, but they are funny sometimes.

[@grumpy_old_man]

Still working flawlessly in my electric drill and Kirby😉 But you probably have other experience?

[@MrFryfish]

The pont is on some ocassions, maybe not this one.. when you cannot EXTRACT THE BEARING because the manufacturer decide to work against you, then you have NOTHING TO LOOSE to EXTEND the life on a bearing!

[@gkamenov]

You just killed that bearing

[@grumpy_old_man]

Still working flawlessly in my electric drill and Kirby😉