Re-greasing a shielded bearing (no disassembly)
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- เผยแพร่เมื่อ 29 ก.ย. 2024
- Cleaning out and re-greasing shielded ball bearings without popping
the shields off. Using an air compressor and a vacuum cleaner to clean out and force grease back inside.
woodgears.ca/mo...
What on earth is the point, replace, bearings are very low cost!
if you can find it, yes. but this is an oddball size. also shipping costs and waiting for it.
Yeah not all bearing are cheap, and many times just getting fresh grease in will provide many more years of life.
@@matthiasrandomstuff2221 I’m not sure where you live, but here in the US there are tons of bearing companies that have pretty much any size you could imagine. I’m in northeast Ohio and there is Akron bearing just to name one.
The difference between people 70 years ago and today.. they would fix it while we throw it away and buy new.
@@QargZer Cost for new vs. Repair old.
If only we all had Matthias living next door!
So true, very resourceful :)
If you don't have a Matthias living next door, be the Matthias of the neighbour
I wanted to say the same...
I wish
Be careful what you wish for... don't you remember the videos with his leaf blower? ;-)
The thing I love about Shopsmith is walking straight from the (whatever machine configuration the tool is in) to the accessory wall to get the other attachment and retool.
the thing I love about separate machines is that that step is completely u necessary.
or that it's locked into a certain rpm because the selector knob was lost in 1962, and replaced with a vice grip
love it that you cleaned it, then finally created the higher psi grease fill. what more could a bearing ask for.
Excellent video great I've tried replacing bearings in old equipment and can never find the exact replacement bearing bravo great work my friend
2023 and I am returning to comment. This method works amazingly well. Flush the bearing with 3 in 1 or WD and blow dry. Place bearing in a jig above a shop vac and boy howdy does that grease get in that bearing. Holy lubrication. The fan on a 10 year old quartz heater began squeaking loudly and pissing off the wife and the chinchillas. This method returned the heater to the previous, silent operation. To those who say "Buy new bearings..." Well, I repaired the unit in less time than it would take to actually locate, order and receive the bearings. It's only temporary if it doesn't work.
Clever way to regrease. But to be picky, those are not sealed bearings, they are shielded bearings. Sealed ones can be regreased too but the seal needs to be popped off first.
I read stories of a farmer, in a Shopsmith group
(who had a small herd of Shopsmiths in his barn in multiple configurations-- like double-headed drill press, etc.),
and he'd regrease actual sealed bearings in his large hay mowers. He drilled a small hole in the seal, pushed grease in, cleaned the seal and put a dab of silicone sealer on the hole.
That way of cleaning and re-greasing was impressive! I usually remove one of the shields, clean the bearing, lubricate it and re-install the shield - this way is much simpler and leaves no marks on the shields. I should have thought of that years ago :-)
That it is... and less mess.
2:28 don't you mean "shop smiths are weird"? 😂😂 I love the things don't get me wrong it's just a crazy contraption 😂😂
My Shop Smith band saw has the same problem. Thanks!!
if you use a vaccuum to suck grease into it you will get channeling, it would be easier to use the same woodenblock and use a wooden piston to press the grease through the bearing
Wow all that work How long did it take ? I guess a new ball bearing like this is between $5 and $10 . Makes me wonder is it worth it ?
Sure hope he has a cover for it. I had a blade brake, an try to get me. Thank goodness the cover slowed it down.
Folks, please don't use paint thinner to wash out grease from your bearings. Paint thinner leaves behind stubborn residues in amounts significant enough to destroy the lubricant oil-soap dynamics in your grease. Chlorinated brake cleaner should be your solvent of choice here. And even then, you must thoroughly chase out the old grease/brake cleaner solution from inside the bearing housing with a compressed air gun and let dry completely before you can apply fresh grease.
p.s. rubber seals must be removed before solvent application. This is because solvent exposure degrades rubber
Если нельзя заменить подшипник, можно конечно и так сделать, но количество смазки должно быть определенным. Шприцом набьется слишком много, но это не очень страшно. Лишняя выдаваться, а пылесосом вообще неизвестно сколько. Скорее совсем мало. Придется часто повторять набивку
That bandsaw had a cool mechanism for tensioning the blade... But maybe that's common, I don't know.
Unusual. I wouldn't call it cool.
Could you have replaced the tires with crowned urethane tires? Since you didn't show any tracking mechanism, I wouldn't know.
Which reminds me I need to check the arbor bearings on my tablesaw!
Cool approach. What kind of grease did you use?
This is cool thinking - though new bearings at like a buck or two
Depends on the sizes, I would think.
My dad was the kind of man that would buy a rebuild kit for a brake cylinder. I thought he was foolish; spending so much time to save so few dollars, until I got older. Now I have so much respect for the way he lived. This video reminds me of him. I like it.
Who doesn't rebuild a cylinder? Shoot, in Arizona we rebuild everything a cylinder is like bottom of the barrel guy... get out ur lil eco-zone and explore life more... cylinders is just one part on one machine of many thousands that are out there... I've resleeved motor piston cylinders for 350 motors, rebuilt it and I'm still a newbie... and that's just it, I'm not on a MASTER level, let alone GOD TIER... and those people exist
@@stasylumbassist1 Shut it julio. Nobody cares about your fantastic life
Some times the simplest thing's are easier .
I wish we could get back to fixing solid stuff rather than throwing broken ones and buying new ones over and over again. People fall into this "single-use" trap easily. But, it was only meant to serve global giants of manufacturing which paid the politicians to push the first world country into this shit.
For a moment there, I thought Matthias was going to balance the bandsaw wheels as well.
Perhaps in the next video ? 😬
Next video
That vacuum method was pretty clever. Granted, it wasn’t the most efficient way to pack a bearing, brute forcing the grease in proved to be much faster. But still it was clever.
For when you don't have a grease gun on hand
New video on how to clean grease residue out of my vacuum hose 😂
Sure... seems mostly like a safe way to get a bunch of slimy grease into your shop vac. They way that worked was clever dough.
@@the_hate_inside1085 Clever indeed. With enough saw dust and other things being vacuumed, if it's only a little residue maybe it works itself out eventually.
@@practicalguy973 More like it attracts dirt or whatever else you are vacuuming, and makes it stick to the insides of the machine.
NOT a sealed bearing, that's just shielded. but great ideas for shielded bearings to give them new life.
If you have a sealed bearing which has lost its grease, it is now only a shielded bearing. *shrug*
@@Nevir202 lol, true.
I love how entertaining these 'random stuff' videos are :)
That is not a sealed bearing. It is a shielded bearing. A sealed bearing has rubber seals that do not allow dirt to get in.
Absolutely correct. And the bearing is shot, if it's making that noise replace it, £2.50 max. While you are at it replace with a sealed bearing.
You made me laugh when you said, "A sealed bearing has rubber seals that do not allow dirt to get in." Yeah sure, you keep believing it.
@@1pcfred Yes, seals keep lube in and contaminants out. “Arizona Road Dust” or carbon bush dust are fine enough to work its way though but for the most part rubber seals on precision bearings work.
@@teofilstevenson in my experience what rubber seals do is keep contaminants in bearings. Whatever manages to get past the seal gets into a bearing and doesn't come out until you pop the seals and clean the bearing. Sealed for life means the bearing is beat once the seal has been defeated. Not nothing ever gets in the bearing. I mean use your head. The seal wears as the bearing turns. A seal contacts the inner and outer races so the outer stays stationary along with the seal and the inner turns on the seal. It's not going to put up with that forever.
@@1pcfred Hey Mr Wizard, I do use my head and have used it for the 35 yrs I’ve worked for a world class bearing manufacturer. This isn’t the Stone Age, technology has addressed such things.
Look, just Dremel the bearing in half. After you've gotten stitches on your thumb, cleaned up the blood and tissue from the workbench, try to see if the part number is still legible so you can order a new one.
Since these bearings aren't aligning a shaft, after cleaning the blood you can just measure the ID, OD, width and get one of that size from the auto parts shop.
The important thing in this video is not the few dollars he saved but his creativity coming up with a way to lubricate the bearing. What if this bearing is no longer manufactured? There is an old saying: There is more than one way to skin a cat. It's always good to learn more things. I had never thought of this way to relubricate a bearing.
@@saylormalan when a bearing starts making noise there is already metal on metal contact and it's no good anymore. Besides, no bearings are out of production, just read the specs or measure them and order off of a catalog or auto parts store. No point in getting them from the manufacturer.
@@saylormalan you're some bearing expert
@@mick1gallagher Greetings from Brazil. I'm an amateur mechanic. I was born liking mechanics. Each case is different. In this specific case I think it's worth relubricating to last a few more years. What cannot happen is for a bearing to run without grease. Putting grease on this little beauty, it can still last a reasonable amount of time.
In bearings that have plastic protectors, it is easy to remove these covers for cleaning and regreasing, but when these protectors are made of tin, usually the covers get dented when removed and assembled. This way to regrease this type of bearing is very well thought out. God bless you.
These here were shielded while the ones with plastic or hard rubber are sealed.
Matthias!
I have a Shopsmith and my bandsaw makes the same sound!
This was a perfect video for me. I know what I am doing today!
THANK YOU SO MUCH!
Name checks out 😉
Me too, bad thing is I replaced the thrust bearings little over a year ago! Of course who knows how long my FIL had the replacement bearings that came with the SS...
I usually melt the grease, drop the bearing in and wait until grease resets.
I usually pop the shields using two dental picks (you grab the springs on opposite sides and lever out) but this is much more interesting. Especially for rarer bearings that can't be replaced/ (shield can't be)removed (of which i've come across a few times).
Ya same actually, I was like holy crap I may be able to fix some of my old machine bearings finally!
Only thing I'd do different probably would be to soak the bearings in the solvent longer to allow it to break down the grease and dirt. Not sure how well it worked just jigging them around in it for a few seconds. When we re-greased automotive wheel bearings in automotive class in high school we'd lay them in kerosene for a couple hours and then come back to them and clean them.
For high volume standard bearing sizes where there’s high automation in the manufacturing process the shields can be non-removable.
For the smaller bearings i find two Stanley blades work quite well. I can easily take apart a PC fan bearing (3x8x4 - 693) and regrease, I prefer mobil polyrex EM, it makes less noise. The newer bearings have press in shields and can't be removed without damaging them...
@@teofilstevenson I've been popping the shields of bearings for over 50 years, but only as a short term measure, the grease as come out because of wear.
Feels Good When Everything Can Be Fixed
That grease jig probably would have worked on my drill press bearings, but they were damaged knocking them out. Like you said just get new ones if you can't get at them easily. Nice and quiet now.
Yes, Shopsmiths are somewhat odd creatures (owning a couple myself). But they work fine and are still supported by the manufacturer. That’s what really keeps them going. The same basic design has been around for 66 years, with improvements that are designed to be back compatible to those older machines.
If a person doesn’t have a lot of space, a Shopsmith can be a good all around solution. Definitely not a perfect solution but it’s not designed to be in a cabinet shop.
And yes, the bandsaw is odd by design, but for someone who understands it’s quirks, it’s actually simpler to set up than a standard bandsaw.
I have a Powermatic 14” bandsaw with Carter bearing guides, I hate them! Every time I go to use my bandsaw there’s at least one bearing is sticky or frozen. I’m going to try this trick on all of the bearings when I get the time. Thank you Mr. Wandel!☮️👍🏼
Yes anyone can just buy new. Its always nice to be able to salvage what we already have though. Particularly when encountering the infamous "backordered" message online but also just to see human ingenuity. Well done. Subscribed.
I like your method of greasing those bearing with the gun. Pretty ingenious!
I used the vacuum cleaner technique on my bicycle wheels, to get grease right through the axle to both sets of bearings (having first flushed them with degreaser, and dried them off). It worked very well. I've also used this technique to get woodglue deep into cracks. Vacuum cleaner on one side of the crack, tape in strategic places to concentrate the vacuum on the other side of the wood, and glue applied at that point until it appears at the other side of the wood.
Wow. I learnt something very useful on TH-cam for a change. Very clever idea 💡
You can grease the bearings easily without the jig by putting some grease in your hand and repetitively rub the side of the bearing through it while rotating it. This will hydraulic the grease through the bearing.
Hadn't thought of that, but even simpler! Less cool though.
Have you ever done that with a shielded bearing?
He did it with ZZ metal sheilded bearings, without removing the shields.
It's hard to hand pack a shielded bearing.
That's the old tried and true method used for automotive wheel bearings back in the days of drum brakes. It works, did it many times before I got a tool for greasing wheel bearings using a grease gun.
@@bobd. I just got to thinking, an automotive bearing grease jig would probably be pretty easy to make out of wood. I never thought about it back in the day. I drive a GMC Safari van that's rear wheel drive and I just hand packed brand new bearings for it and put new rotors on while I was at it. Runs smooth now 👍
Very clever. Also, you can pop the shield open and reinstall it back.
That squeaking brought back awful memories of my Shopsmith. I've never been so happy to get rid of a tool
Thanks for this, I'm doing this next time. To think I've been popping the covers off all these years for no reason! Great tip.
I love the tinkerer attitude 💪
Let’s find a way to do it .
Doesn’t matter I can replace the bearing relatively inexpensive.
But I get to tinker with it .
Clean out old grease , build a fixture to force new grease in .
😄
I spend many hours doing just like that 💪
Very interesting method, I liked it very much.
In the case of high loads bearings, there is a specific type of grease. Very sticky and smells like most of mechanics shops. Cheers!
To the peril of all other TH-camrs, I watched John Heisz' video first. Thanks for the useful content Matthias! I'm pretty sure my bandsaw bearings are ready for some grease.
Interesting way to re-grease bearings. Feels like a really Mathias way of doing it :)
love the vacuum regreasing and the pressure jig as well.
Awesome I love this! Good job Matthias. Great to have neighbors you can help and count on them for help 💕👍
Thanks for sharing both methods of packing a bearing. To fix the shaking of your band saw buy a new set of tires for the pulleys. After that get in the habit of releasing the tension on the blades when the saw is not being used. The tension flattens the tires after sitting thus the shaking.
It's not that hard removing the clip and shield. That's not the correct grease. Making things harder for yourself.
well i never!! ive been repacking and regreasing bearings for 50yrs and have never seen such things. Man that will save me a motza on damaged bearing seals. Thanks for sharing Matthias. And for those who say buy new ones, I'm tipping they don't live and work 250miles from their nearest place to even order bearings..
The problem with greasing up squealing bearings is that the damage is already done. Once they squeal, you've had unlubricated metal on metal contact and wear has taken place. But I suppose for something like a band saw, you'll probably be ok. Not good for things that run for extended periods of time, or even continuously like wheel bearings, air handler motors and bearings, etc.
Cannot wait to go lube all the bearings on my dad's old band saw. Thank you brother!
Curious what type if grease you used.
Also, the second way of filling them, by pushing grease through the bearing, is easy if you need to fill many bearings with the same dimensions. Built a base plate with a rod that matches the inner diameter of the bearing that has a thread on it so you can screw the acrylic top tight. The acrylic top has two holes and you push grease in one hole with a syringe until it flows out of the other. Same volume filled every time and easy to clean when screening many different grease samples.
/chemist working in grease R&D
Looks like typical wheel bearing red grease
it looked like red
The slippery slidey kind
Fantastic answers lads. Really narrowed it down.
(Most probably this is a multipurpose simple lithium grease but the transparency of it makes me want to say anhydrous calcium but that seems a bit unlikely for a regular consumer. Also colour is 100% irrelevant, any grease can be dyed any colour, almost.)
I would guess Lucasoil Red N Tacky.
About the best re-greasing process I've seen so far. 👍🏼
Bearing grease... And not the blood of welders who call their helmets masks
some times getting new bearings is better but sometimes it's too hard to find one , your solution is great for second types 👍
Well hell, that vacuum thing was slick but the grease gun set up was outta sight! Thanks..
They just don't make bearings like they used to!
I would try to order some good Bearings that size from Japan.
Maybe you can get lucky and get some New Old Stock?👍
You can get good quality bearings from any old auto parts shop. SKF, FAG, NSK, Koyo are all good brands. If you are ordering off an industry catalog make sure you don't pick a bearing with tolerances set too high, as that may wear prematurely due to poor alignment (assuming it's aligning a shaft).
I like it. I will keep that in my memory bank. You never know when you might need to do that.
I look forward to all your videos Matthias. Humongous fan!!♥️
I can't believe he came up with two working solutions to get grease into sealed bearings.
Yes, Shopsmith bandsaw are weird, but in a wonderful way. The upper wheel isn’t crowned but has a slight taper, and it is canted to the back, which causes it to auto-track against the bearings on the left. Great vid as always, Matthias. Scott
Looks like the tension was set above the max on a 1/4 inch blade and the blade didn`t seem to track at the back of wheel as it should. Maybe other issues are afoot?
That was very clever using wood as a bearing housing to clean and grease the bearings.
I wounder, did the weird engineering of the Shopsmith bandsaw attachment stand out at all from the rest of the Shopsmith tool 🤔
I would say there is some unusual engineering in the upper drum of the Shopsmith 6" belt sander, for tightening the belt.
Sometimes the easiest, temporary fix is to: drill a small hole in the shield; Hit hole slightly with a center punch to make a mild countersink; Force grease in with a Lincoln needle grease applicator; and seal hole with a dab of adhesive.
Great idea and would work well when using a packing tool reducing the effort to get the grease in there.
Or you can just put it into a bag with grease and use a vac master
@@andrewa8569 My suggestion is more aimed at situation where the bearing can't be easily removed.
I gotta say that’s the first time I’ve seen bearings greased with a shop vac. Thanks for sharing.
Awesome use of your jigs and a shop vac.
I like the way you blew the paint thinner out of the bearings. Pretty neat little jig.
All that drama just to repack a bearing!
Many years ago I worked for a company that had a lot of machines that needed regular maintenance. The bearings were all sealed as the one in your video. We were taught to drill a small hole carefully in the seal of the bearing. Then cover the hole with silicone caulk. When they needed grease, we simply used a needle tip on the grease gun. Worked good for us. Thanks.
I saw a bearing like that on a motor that came to a shop I worked at. It didnt seem to cause any issues. I was impressed.
it is the wrong bearing, it should be 2rs not 2s
Brilliant alternative methods of greasing
Amazing idea. I wish I would have know this about 20 years ago. Thanks for helping
The final method of injecting grease was fantastic. Thank you so much for sharing.
i think the shop smith tools are pretty cool, id love to hear your opinions on the unit
Love your "make a jig" approach!
That wood block jig for cleaning and pushing grease in is actually genius 😁👍
Not sure if anyone else mentioned it, but…. Don’t spin bearings like that with air (unless you’re tossing them anyhow and it’s just for fun!). You can hit 10s of thousands of ripums and it’ll ruin them.
The noise of that bearing, like shearing a pig! 😳
Lots of squealing, not much wool.
Money/time-wise not worth it. For fun and use your brain tinkering a little bit. Totally worth. Good knowledge in case of zombie apocalypse too.
Take it from a maintenance engineer… if it’s been running without grease *at all*… it’s GONE… there’s no saving it
if you can get a few more miles from re-greasing them, go for it. When I was working on the family wheat farm, waiting several days for a new bearing to come in meant a lot of lost money.
Happy to see you’re getting to know your neighbours! People down here are friendly but a little shy. 👍❤️
FYI, they are shielded beatings, not sealed. It would be nice if they at least gave the option of lubrication holes with these smaller bearings. I can understand being because they're mostly used in throwaway stuff, but much in industry still uses them, and time and money to replace is still a loss versus being able to keep them lubed.
I clean (usually only when rusty) with WD40 or diesel, mixes with grease better. I spin the bearing using the rubber backing adapter for roloc pads.
You can usually blow a rubber sided seal out of a bearing, and pack with your thumbs.
I have never had grease cross contamination ruin a bearing, if there was grease In there we would not be doing this.
A blunt tip assortment of syringes is a must, 14 - 25 gauge, (20 for $10) you can simply just add some grease through the gap in the shield there. If the rubber of an applicable bearing is supple, you can just go under the lip. I warm the syringes a bit, and squeeze them with pliers, putting the syringe barrel through a metal washer where your index and birdie finger go to grab on to.
I mostly drill a small hole in the seal wall, (cuz the seal is crunchy) and fill. Seal hole with a dab of 1min permetex right stuff.
If you roll the bearing while putting the needle in, you can usually get deeper.
I over pack the bearing and spin it very fast and fling the excess grease back out and clean off.
I use Full Synthetic Valvoline VV985. It mixes great. Bad advice for space shuttles and aeroplanes, but wonderful for cars and equipment.
I have had great luck greasing timing belt pulleys and front wheel bearings on cars/trucks, (sealed assemblys, not old school) If they are apart for something else like a ball joint or water pump, drill a hole and squirt them up, they will even quiet back up if noisy and arrest advancement of whatever axial play, if any, was there.
I would run a re-greased Japanese timing belt pulley over a luck of the draw Chinese sourced part any day. A gambit of new timing belt pulleys could exceed the value of the car. (I have been known to repack new pulleys from 3rd party's to ensure good grease)
Most people will not a replace belt pulley, if I can even get them to change the belt. I have greased hundreds of noisy 6203 style bearings and they always end up out lasting the thing I bolted them back on to.
If a bearing does not spin a lot, I use Seal Glyde as a lubricant instead.
It tracks AGAINST bearings? lol, what a horrible design.
That sharp and deafening metal on metal sound, gotta love it.
The wooden adapter for the grease pump was indeed very effective, wow.
I clicked this vid just to see if it was an april fools joke. But no. they were being serious.....
If a bearing is worn out, it's worn out. New grease doesn't change that fact. HOWEVER, in this particular situation it might work for a while, but not in anything with any demand for actual load or precision.
What ( cant find exact 40 mm hole saw) you use to cut out the bearing O.D. ? hole saw, end mill, forstner ? Also what was the exact O.D. of the grease hose end ?
Shielded or " sealed bearing" are for the most part NOT 100% permanently sealed. I've been cleaning and greasing these for years. It's a little pain in the ass but can be done easier and faster than waiting on amazon or driving into town TRYING to find the right replacement bearing. Unless you have a destroyed bearing just fix it yourself.
I like your method of greasing the bearings. The tough part is to know when to re grease and when to just get new ones. That is the tough part. And for the engineers, can you say DUMB ASSESSESS.
Or you could just pop the shield off, pack it with new grease, snap it back on and call it a day... What a mind-numbingly inane video. And all the fixtures and jigs he cobbled together just to try to do it. oh my!
great video... but those bearings are probably less than $5/ea... probably only useful if you live in the middle of nowhere and need it right away... which... might fit your description
I understand both sides of the argument, of, reuse or buy new. I, myself, prefer having instant gratification by going to a brick and mortar store and buying what I need, but, sometimes what I need isn't immediately available. I also weigh in safety factors. Is a regrease going to cause more problems than it'll fix? If not for the short term, regrease and revisit sooner than later if it's not a lot of time to replace the parts. In this example, 5 minutes of cutting up a block of wood, and 2 minutes of squeezing grease through, a LOT better than ordering online and waiting.
One thing though, others talk about over packing will lead to bearing fail as well, did you pack it completely full ? and do they still work perfectly today ?
too much grease and the ball will be pushing through grease which is not good either
Aren't you that guy who made the mouse hole video.... I loved that video.. Ok I know it's you after seeing the last 5 seconds of this video.
Nice one. I like your face.
I looked in to a specialist for sealed wheel bearings, and apparently any more then 30-40% full of grease and they will create heat and thin the grease as it runs out.
I used to clean bearings every week when I raced R/C cars a couple of decades ago. I bought a jig that, although plastic, looks a lot like what you made for blasting out the bearings using brake cleaner. It was designed with a conical shape so that many different size bearings could be cleaned. IIRC it was called a bearing blaster. Thanks for the tips and the memories!