BIGGEST BRONZE BUSHING In My Machining Career. Największa brązowa tuleja w mojej karierze.
ฝัง
- เผยแพร่เมื่อ 7 ต.ค. 2021
- Machine: CNC VTL
Yama Seiki GV-1600M
Material: Bronze C93200 (SAE 660)
C93200 Bronze is a general purpose bearing alloy possessing good anti-friction properties, ample strength and hardness, adequate ductility and excellent machinability. It is used as bearings, bushings, light duty gears and sprockets, impellers, wear strips, plates, automotive fittings and washers.
That bushing is insane! I couldn't imagine the mess that bronze made all over the lathe, one of the worst materials to clean up after in my opinion. It's sad to hear people putting down your machining. Everyone's an "expert" when they're on the internet. Your machining is always impeccable! Thanks for putting up another great video.
And that's where the enclosed machine shines.
@@ChrisMaj Very true!
I think that the less chance someone on the internet has actually done any machining, the more of an expert they are. That seems to hold true for almost all disciplines.
for me cast iron is worst material...
@@Paul_Kair O yeah definitely and that smell.
I started thinking about the things that went into that piece. The casting process, the metallurgy to get the alloy correct.... Then to see that there was only that small void visible when you finished.
And you sir, you are a true craftsman in what you do. Not only are your machining skills top notch, your video production skills are great as well.
Haha thanks. I'll take that machining skills, but the video production, I don't know about that. 🤣
I used to turn a lot of bronze for face shovels and draglines, the TH-cam experts would have a fit if they saw how we did it (2 set ups, release tension after roughing to finish). I've seen enough of your vids to know you take pride in your work so no complaints from me, thanks for sharing.
I hear you. Being a repair shop we've pulled some crazy shit to get the job done, but that's definitely not TH-cam material. 😉
nothing wrong with stress relieving parts either, it almost guarantees part wont move much in later operations.
Awesome as usual. I wouldn't even bother addressing the tool bags that criticize your machining. When one of them actually posts a video that shows them doing what you do then we can consider them more than just a popcorn fart....
🍿💨...😆😂🤣
It's all good 👍
I love bronze, but the mess is something else. I bet you were still finding chips in the neighbours parking lot six months later. Great job.
And as always beautiful workmanship
Great work as always! A point to ponder, if I may: As an automotive technician I learned a long time ago that there's usually more than one way to get something done. Just because it works for me doesn't mean it'll work for you. I also learned that machining is the same way. As long as the part meets specifications and the customer's expectations it's all good!
Well said!
I'm in love with the pieces he makes. I always watch his videos and I love them
Loved the video as well as your others I'm retired and after watching your videos
It really makes me miss machining
I never questioned tolerances changing after un chucking or runout
Badass job my man
That's really cool!!!!!!!
Thanks for sharing this all the way around the world!!
Nice and clean part . But that 0.001" tolerance on something that big is something else.......
Yeah, I was really surprised when I saw that. I don’t do work that big but a total .005 on ID seems rather tight as well. Very small margins for error. 👍
@@matter9 yes class 4. tolerance of sorts.... , tipically i see 6-7-8-9 class tolerances , the rest is open or specific . the 6. Class is tight enough . I really can't imagine they need that precision (&i could be wrong)
@@kisspeteristvan I've only seen this kind of tolerancing on high RPM stuff like in engines. In car engines it can be on the order of tenths rather than thou, but this is more than ten times larger than car engine bearings so the tolerance scale is comparable. Not sure what needs to spin that fast which is that flipping huge though.
put a TH-cam video while you work on some expensive no margin of error job becomes a standard practice among machinist worldwide. it is a good proof for the picky customers to see how the job was done. no flip flop, no cut corners, no flow play, no it was broken in the workshop kind of mumble jumble. it is a kind of good advertisement for the goodwill of your company too.
I enjoy these videos for not only the talent you have but also to see how you do your setups I'm new to running a 56in bullard keep up the good work
That is one hell of a big bushing I haven't made one that big yet probably never will.As a machinist we all know how you go about machining,premachining roughing ,stress relieving and final machining and all the care you take always catches my eye since I'm a bit of a fussy machinist myself.I haven't come across any of your videos to criticise,if others do then they know SFA.👍
I'm trying not to post all the fuckups 😉 Thanks for taking the time to watch my videos 👍
Very nice work. I don't pay any attention to negative comments. Your set ups are perfect obviously! I've been a machinist for over 40 years and cut a lot of bronze. Also liked seeing the pi tape used. Used those many times as well.
Your set up was spot on mate, so I'd bet you weren't worried about run out or ovality, experience counts, let them say what they like, I don't know why people leave negative comments they're only jealous mate, lovely piece of turning and well filmed mate thanks for sharing 👍
I really enjoyed machine shop when I was studying for my ASMET! Crusty old retired Navy machinist taught us. First thing he said to us was: "You'll get an A+ if you can do it better then *I* can. If you break a tool, you fail the course on the spot". I got an "A" on every project! I also broke a 1/8" drill bit. Took it to him and showed it to him: He said: "Get TF back to work"! Guy watched me (caught him out of the corner of my eye). One day he asked me: "Why did you pick this old LeBlond down at the end of the row instead of the newer machines up front"? I said: "The Squirells fight over the new ones and never use the same machine two days in a row. I figure this old girl gets left alone (and it did because every day I got to it it was just the way I had left it the day before). Also, the scrap barrel is two steps away, and the tool room is about 10' away. Those guys walk back and forth more than I do, and I get done cleaning up and turning tools in and am gone before they even start"! Went on to my BSMET and had a good career as an Engineer before I retired. These days I wonder if I might have been better off being a Machinist although I *did* spend a lot of time in the machine shop! ;)
As a young design engineer I worked for a U.K. company in rubber and plastics, Francis Shaw , my division made rubber mills and calendars, each machine used four or eight such huge bushings, one guy did nothing but turn them on his vertical lathe, no CNC in those days. Each and every one a masterpiece in casting and machining. They had cast iron rolls of about 10 tons running in them and thrip between the rolls that masticated the rubber used around 600 HP at say 20 RPM. Humengous loads,and these machine ran for decades. This looks awfully like a replacement bush for a rubber mill, a big rubber mill.
That must have been a most satisfying job to have finished .Thanks for the video.
Bronze is always fun to work with. Thanks for watching.
Westinghouse on Henry Ave. Sunnyvale ,CA. Now that was a shop that would dwarf a part like this. I'm impressed by the skill of the machinist on this part keep up the good work
Always knew you were a watchmaker at heart.
By the size of this piece, more like big ass clock. I could not be a watchmaker, I don't have the patience for small parts.
@@ChrisMaj We took a survey , and found out we have faith in you and your skills . Stay well .
I made some 80mm outer diameter bushings with my small toolmaker lathe. I sweat water that i match the tolerance. Im not that experienced in bronce. You did an awesome Job!
Hey man, don't listen to the negative comments. You do amazing work. Watching your videos makes me miss the machine shop. I did similar work locally but the castings we got were never in as good a shape. As always great work.
It used to bother me a little, but now I don't really care. Thanks for taking the time to watch my videos.
wow, this a fantastic video...thanks so much for sharing....Paul
What a unique part. Chris I was wondering if you had heard from David Wilks. I really hope he is still around
Yes, have been worried about David.
i did some tracking and found someone on Facebook who is supposed to be his son so ive sent them a message asking if he is alright
No, I haven't heard anything about him since last youtube post.
@@shaneward6689 Well done. I won't play on facebook and am thinking of dumping utube. Too PC for my liking.
@@markneedham8726 so far no luck though
Wow, awesome video, thanks for sharing!
Good work buddy!!
Thank you! Cheers!
No smart azz comment from me.
You are a professional.
Awesome to see the true form of the object released.
I love watching these vids.
I always got the weirdest jobs in the shop. From sump Sucking to setup for long production runs to covering for guys being sick in other shops.
Awesome job . Cheers .
Lovely video Chris, could you make a separate video of how you set up the part and fine-tune it while indicating it on the CNC machine
Well done, Simon!
Haha, I don't see it.
@@ChrisMaj ... a big golden Buzzer
Well done!
Добрая робота!
Удобный циркометр для замера длины окружности. Респект !
Awesome work
Hello from Greece.
Really cool bushing size for sure.
I work with castings and they do a really good work,and this bubble you show is in non working side!!
After the hard cuts,you may test some aluminium inserts on bronze...i find them to work perfect in bronze, even in hard ones.
Very nice work as always!!!
Thanks for the tips!
I started job in a new shop 6mths ago, First job they had me do was a 30in diameter, 30in length, 16in bore brass nut. Had an internal buttress thread with a 1.5" pitch. Grooves went from 16" to 18" in diameter. Needless to say it took 3 weeks and many chewed fingernails.
If you're still there, it means you did good. 😆👍
@@ChrisMaj Thanks. They were definitely happy.
I grew up with the family that invented the Pi tape, before Lufkin. Great video.👍👍👏🏻👏🏻
Great tool once you get the hang of it.
Amazing Chris👌👌👌👍
Glad you enjoyed it
That’s cool. Nice work.
Thanks!
very impresive work sir
Wow, great and precision machine job, very appreciated your professionalism💯💯💯👏👏👏
A beautiful Job!
Beautiful is what I do 😉
These kind of jobs can only be done by really skilled people. You must be one of them…👏👏👏
Haha thanks, I like to think so 👍
Damn, that was cool as hell. I have done a lot of bronze castings. Nothing that big but still 12." OD. I do miss doing this stuff. And you didn't even squish it! Well done mate.
Yeah, that was a first one for me too of that size. Turned out better than expected.
amazing work! good choice of music too. 5 stars!
Glad you liked it!
Brilliant piece of machining sir,I machine brass every day,gunmetal mostly,lg2 and lg4
Dobra robota!
Dzięki 👍
Well done , good job .
Thank you! Cheers!
Chris, mam wrażenie że za bardzo się przejmujesz jakimiś durnymi komentarzami od osób co chyba nawet klucza w ręku nie trzymały.
Skoro wrzucasz od kilku lat filmiki z obróbki, to znaczy, że wykonujesz swoja pracę perfekcyjnie. Wiadomo, że gdybyś produkował dużo bubli, to na pewno byś długo nie popracował w zawodzie i nie wrzucałbyś nic na YT.
Pozdrawiam i czekam na kolejne video. ☺😎
Przyzwyczaiłem się już do tych klawiszowych ekspertów.
Very nice work
Good job there, that's some shaft diameter!
Back when, they wanted the bronze swarf back.
PITA to clean the machine that well prior to machining the bronze!
Neat how brass turning makes the same sound even on tiny parts as this gigantic one
Beautiful!! I'd sure like to see the machining of the grooves to distribute grease across the contact surface.
Nice job.
nice piece sir.
Świetna robota. Pozdrawiam z Polski.
Dzięki, staram się 👍
Finally i saw the making off of one of the 4 bushings for my model truck. its in a 20:1 scale.
Is a big ass truck.
Good job I’ve machined some big pieces and things like this too . I had grease groves on the inside it wanted to sing cutting them ! I started machining graphite talk about to tight to loose to chuck on ! I always had out of shape parts to repair another hard part is indicating something bent ! I also machined on a old Bullard touret lathe 30” crucibles for vertical casting brass
nice work
I want to make a smart comment 09:08 ..... what a great job, that is one heck of a bushing and a thumbs up from me.
Well thanks man.
About machining, I don't see any technical difficulty, rather it is a straight easy part to machine. But quality of casting is just superb. But for that small defect, casting is really good. I appreciate the foundry. Thanks for the video
You right, there isn't anything too complicated other than the one tolerance and the size of it. Thanks for taking the time to watch my video.
Verry impressiv!
Good job
Looks like they did pretty good on the casting.
They sure did.
most people dont realize it doesnt take much jaw chucking pressure to machine parts of this size in a vertical orientation. gravity and the weight of the part help keep it on the pins. just an opinion from a 35 year part spinner! peace very nice work by the way!
Fajna robota bo tuleja dość gruba ,mi na konwencjonalnych karuzelach często zdarzało robić wieksze ale ciekoscienne tuleje na wały okrętowe upierdliwa robota , he he i ta taśma do pomiaru raz miałem możliwość pomiaru i dałem sobie spokój .
Nie chcą kupić większych mikrometrów, to się bawię taśmą.
@@ChrisMaj He he brak pomiarówki czyli ten problem jest wszedziej.
That is enormous, and I for one am very much impressed with the precision. Wonder what shaft this bushing had to fit, and why a bushing was chosen for this huge load.
Thats a big beautiful bronze bushing👍
I’m making some 55x50x45 mm bronze bushings myself for an hydraulic vane pump and you could probably put 500 of those inside this😂
Wow! That's uuuuugggggeeeee!
언제봐도 역시 대단한기술이네요......
good job chris maj
Excellent job! Those chips get everywhere though don't they lol
Yeah, bronze chips are pain in the ass.
Parabéns irmão, já trabalhei num vertical deste,mas usinava na maioria das vezes cobre eletrolítico
Nice 👌👌
Damn that’s huge!
I wonder what that’s going to be a part of someday.
Most of the work we do is for steel mill industry.
I'm guessing that's a propeller shaft bushing for an oil tanker or massive container vessel.
Beautiful work 👍👍😎👍👍
Steel mill industry
Muy buen trabajo !!!! yo trabajo en una fabrica donde se especializan en bronce y trabajo en un vertical you ji la fabrica se llama Sorena saludos desde Chile 🇨🇱
omg that tolerance wow
Great job.. I enjoyed working on bushings like these.. ever worked on halved/ split bushings this size?
Never, that might be little scatchy.
Awesome work. Anybody that doesn't think so, is just jealous.
Very nicely machined, that billet must have cost a fortune. I was curious about the rollers at the bottom, what roll they played? And your measuring method for the OD. Used stick mic's myself before but never seen anyone measure an OD using that method.
thats the goods bro
PERFECT
That's cool
I used to do these on an old Bullard vertical belt drive.
The haters can hate!
Me: well done. Precision work at its finest.
Prop shaft bushing? VERY NICE WORK sir!
Thanks 👍
@@ChrisMaj I often wonder if your work for a ship building company, It may be since I am a boat person I see boat stuff even when it isn't but there sure seems a lot of boat stuff you work on.
@@LadyDewBuild Almost all of it is for steel mill industry.
Looks good 👍 and to the smart asses out there, a bronze bushing that size Ain't Gonna Move on ya...
Beautiful work. 😊
Nevermind the "barking" noises from under the bushes. People like to gripe from anonymity.
That is quite a casting. you could probably recast the chips into another fair size part!
I wish I could keep the chips.
Made some wear strips from CDA954 Al-bronze for the box ways of my worn down milling machine once.
Somewhat funny material, lots of work hardening and likes to move during machining, so the comment about tolerances all over the place is somewhat understandable..... ;-)
Nem encostou o relógio comparador porque estava com os diametros ovalizados devido ter preso nas castanhas , tinha que ser nessa aba ou flange da bucha para não ovalizar ai depois acabamento final
I love how the casting is near net shape, but the thing is so big that it needs hours and hours of machinng anyways.
Nice Job #DuplexCNC
As a recently retired toolmaker who strived to make ever smaller more precise parts my whole career, and who ended up being a grinder hand making tiny, super precision laminate and connector mold inserts, it's a little intimidating watching over 1000 # of bronze spinning around.
One slip and you either made a very expensive piece of scrap, or you became ground beef.
Expensive part
Workshop tour please 😇😇
You didn't watch all of my videos, did you. 😉 th-cam.com/video/Sw9NDm1glZU/w-d-xo.html
I had never seen a lathe like this before crazy as
Top of the line workmanship as always, just curious, did you measure the OD with a tape measure? or is that some other kind of measuring device?
It's called Pi Tape
Question: Why did you have to flip it twice? Looks great!