How to make live center | Metal lathe

[@terencem9962]

I have watched your videos maybe 6 months ago, and found myself back here again for this one. So i thought i must subscribe to see more. Great work, thanks for sharing

[@howtousemetallathemachines6478]

Thank you for the visit I’m glad you found it useful!

[@arnonuehm2]

Sorry to put it so plainly: This design is really dumb. Three bearings (overconstrained) on a flimsy (compared to the taper shank) shaft and to top it off an oil seal behind the tapered roller bearing to take the thrust. Curious when he'll find out how well it'll work.

[@nickstihl7821]

How can you make an accurate bull nose using a 3 jaw chuck ????????

[@maxheadflow]

Not sure how the tapered roller bearing acts as a thrust washer. Seems like the seal would get squashed between the roller bearing and tapered mandrill.

[@lockgessner]

Yea all theses dummies on youtube showing there “skills”

[@captcarlos]

You are correct! It would be handy if there was a step in the bore for the cup and a step on the shaft for the inner race that that bearing would act as a thrust bearing. At the moment it's a floating.. something. Execution is.. fine Design is lacking somewhat.

[@sidineizanini9328]

Ficou exelente faltou fazer um tratamento térmico na ponta cônica para evitar desgaste no cônico do restante ficou nota 1000

[@razvanon]

does it matter if i'll make mine with only 2 bearings? one normal and one conical. Do you think it will have side play or something? I have made the shaft only long enough for 2 bearings. Should i just use 2 normal bearings or should i include a conical one as well ?

[@howtousemetallathemachines6478]

Use one normal bearings and Roller Bearing , It is suitable for light workpiece. Live Center Applications heavy duty bull nose live centers are typically used in applications where the center hole is a large bore or when the application calls for the machining of pipe or other cylindrical components such as hydraulic cylinders. Oil field maintenance facilities, manufacturers of power generation components, and pipe manufacturers all rely on the durability of heavy duty bull nose live centers. These centers are specifically designed to operate in hostile environments where work piece weights and machining forces are extreme. Bull nose live centers are constructed with larger bearings to carry these heavy loads. The strength and alignment of the fully supported bull nose head provides longer center life when machining large work pieces. The rigidity of this live center helps dampen vibration and resist chatter.

[@razvanon]

5:55 did you make 70 degrees steep angle because the steel part was kind of short for a 60 degrees angle or was it just your personal choice? I'm asking because i have a similar stock of about 80mm diameter and about long as yours and i would have preferred 60 degree angle but i think it's too short for that

[@howtousemetallathemachines6478]

The 70 degree center angle is commonly used for larger parts. We see it most often in steel mill rolls and similar heavy shafts. In the US the 60 degree angle is the most common while 70 degree is industry specific. You also see a few 90 degree centers. In Europe you see 60 degree and some 75 degree centers.

[@razvanon]

i've already made mine 70 degrees like yours with one normal bearing and one conical. works fine but the only issue is i forgot to machine a little bit of clearence on the inside nose and i think the first bearing rubs a bit on the steel inside as it spins but i could see it already improved on that. Not sure how i'll take it out on the future because i already knocked out the shaft because i forgot to put grease on the conical bearing and the first normal bearing remained in place. Any idea how to take the first bearing out ?@@howtousemetallathemachines6478

[@howtousemetallathemachines6478]

@@razvanon You have to drilling the live center. so that you can take out the bearings with a steel rod. Please observe safety precautions when drilling.

[@stevelamperta865]

I would have watched your video and given it a like , But I couldn't cause of the music ! I think most people feel music ruins a video .

[@h7opolo]

beautiful result! 13:00

[@razvanon]

21:36 what is the screw for? Does it hold anything or is it just to have access to the end if that shaft so you can punch it out for removing?

[@howtousemetallathemachines6478]

Yes , Just to have access to the end if that shaft .

[@mohabatkhanmalak1161]

Thats a nice project and enjoyed watching, thanks for sharing.

[@userwl2850]

I'm making 1 to hold a tube with a 14" bore. Great video 👍

[@马立军-k4l]

Amazing! Your drill is sharpening very well.Thank you for share.

[@jeremiasspencer6644]

Sorry to be so offtopic but does someone know a trick to get back into an Instagram account..? I stupidly lost my password. I appreciate any help you can give me

[@remingtonkase8634]

@Jeremias Spencer Instablaster =)

[@jeremiasspencer6644]

@Remington Kase thanks for your reply. I found the site through google and I'm trying it out atm. Seems to take a while so I will reply here later with my results.

[@jeremiasspencer6644]

@Remington Kase It did the trick and I actually got access to my account again. I am so happy:D Thank you so much you saved my account!

[@remingtonkase8634]

@Jeremias Spencer Glad I could help :D

[@GrayCo]

Good video. Have you thought about looking at the screw on that two-handed cross slide yet?

[@kevinstrachan4442]

I would change one thing, the flat head locking screw for a small cone with threaded end and just locktite it in, so it can be more versitile ie for smaller bores ect. That's my 2 pence worth! Top job Sir!

[@lacaver64]

big nose for turn pipes that is a good thing ,nice video

[@DIY-cu5jp]

請問您是用哪一種材質做頂針

[@ИгорьДедов-к5ж]

Thanks for the video, good way to install bearings, never seen before, thanks.

[@ИгорьДедов-к5ж]

@Rohan Sage Thank you, I'll try)

[@daniloagostini4156]

Brilliant video!

[@Tasarran]

I saw those drills wobble quite a bit as they went in, and I was thinking to myself, 'Man, I hope he's going to true that up with a boring bar next...' I must be psychotic or something! ;)

[@mikelodoncz2886]

What lathe is that? Looks like TOS SU 50A

[@carlostubianosa8630]

Long sleeve plus lathe machine 😱

[@bobbysipes2469]

I wonder how long he is going to keep all his fingers, unless he gets out of the habit of swipeing those shavings off with his bare hands.

[@SomBo-bd3ms]

Good

[@howtousemetallathemachines6478]

Thanks for watching.

[@larbihatem3066]

Good job bro

[@howtousemetallathemachines6478]

Thanks for watching.

[@user-Petrosjann]

На каком станке он работает ?

[@Gurmeetsingh-uq9gb]

Which iron is right for this plz

[@IAN-ev8qz]

why 70 degree point angle ?

[@evandrojosenogueiralima740]

Já fiz muito assim , parabéns estar corretíssimo! Salvador

[@heldercristovao2634]

Ola Evandro tbm me parece que está bem feito mas, tenho uma dúvida não deveria ser em material tratado para depois retificar? Creio que se não for em material tratado, as arestas de peças apoiadas neste ponto o irão marcar.

[@tonyalves9901]

@Helder Cristóvão nao, o ponto funciona apenas como apoio.... esse ponto vai girar junto com a peça. claro que se vc conseguir fazer a têmpera, fica melhor....

[@alangriff1]

When you set up a boring bar, does the cutting point need to be on dead centre just as you would set up a lathe cutting tool?

[@alangriff1]

Don't you need to use cutting fluid on the lathe tip?

[@joseleite8711]

Parabéns bela peça

[@marianodemarco2975]

GENIO !!! desde Argentina, abrzo !!!

[@user-farez]

Почему не закалили? Несколько прижимов ,и,будут вмятины

[@АлексейШульга-ж7т]

И по выбору подшипников есть вопросы.

[@romanrekunov2268]

Игрушка неболее

[@shreeb122]

Ok then how to remove the bearing sir

[@howtousemetallathemachines6478]

Unscrew the screw Then we put the live center under the press and remove the bearings.

[@hayathayat1462]

Bravo Turkey İzmir den selâm

[@silvestreperez4758]

Genio....👍👍👍👍

[@howtousemetallathemachines6478]

Thank you! I’m glad you found it useful!

[@ARTEEMMETAL]

excelente trabalho meu amigo parabéns

[@frankvagas3853]

The taper is morse the inclinación, is whith strip for precision not whith charriot. A diference to 2 or 3 minutes is critical in the length of taper and the coupling of taper.

[@wilfriedkaspar3866]

In my view is turning a correct morse on lathe Impossible.

[@SomBo-bd3ms]

❤

[@cario001musicspace2]

Thanks Nice Proyect. Whats the messure for sealed, please? Thanks and best regards

[@cario001musicspace2]

Thanks...👍👍👍🤗

[@phakdee]

thanks for knowledge sharing.

[@scroungasworkshop4663]

I like this build and will do the same. I’m guessing the tapper bearing takes the thrust when the load is applied. That’s a good idea. Cheers Stuart 🇦🇺

[@ARIFINLATHE]

Nice brother..bearing size type?

[@MJamilJaan]

Amazing job I like it

[@EmptyPocketProductions]

Can you show us your measured runout on the cone of this center ?

[@camillosteuss]

Of less importance, as this is an example, if you want to, you can take time and effort to grind the thing on the lathe on the inside and the outside, center turn the tapered shaft, even center turn the conical part with a custom jig and buy some ultra high precision bearings from timken or skf and voila, a virtually 0 runout centre, but this is to show your ass that if you dont need a tir of 0.00001` you can easily make it yourself, and even then, but it will take more effort...

[@mqeqeshe1]

This center has the same amount of runout as his 3-jaw chuck. Probably .002-.005". Way too much for a live center in my opinion. Before the 2nd operation you should indicate the part concentric with the surfaces machined in the 1st operation. Otherwise you lose your concentricity when reversing the part.

[@ardian3874]

Very nice job .

[@vickeykumaryadav6600]

Humko bhi Centre banana hai

[@stanwooddave9758]

Is it just me, but the number's on the bearing boxes is just out of focus. Maybe the creator of this video, could type in the number's. To me, it seems that the camera was just maybe 4 to 6 inches too far away.

[@HamidHamid-cm5ln]

Yes

[@tommy_xt_6698]

Hi, do you know anyone what the screw that added at the very end is used for?

[@tommy_xt_6698]

@@howtousemetallathemachines6478 but I'm interested in what it is used for (what function does it perform in bullnose) ...thanks for your answer

[@endemiller5463]

Awesome answer!

[@robertoswalt319]

If you need to take it apart, remove the screw and you can use a brass drift to push the shift and bearings out.

[@mauriciotort8303]

70 grados?

[@mauriciotort8303]

@@howtousemetallathemachines6478 muy buenos , me sirven 👏👏

[@farooq6139]

Super ❤️👍

[@zdzisawf551]

fajny filmik ... bardzo pomocny ! dzięki i pozdrawiam Zdzisław

[@slavkoslavkoo4629]

Абразивом шлифонул прямо над направляющими, метал без термообработки, следы от кулачков... китай одним словом.

[@aaymanengineering6964]

Good job

[@vipulbhairakhasiya6004]

Super bro

[@1tarbaby1]

You never ever put a bearing cup into piece using the bearing itself, This only damages the bearing and race. Basic mechanical skills.

[@bebetourneur8110]

reprise en mors dur ? ou et la precision

[@kadironay7598]

bu adam konik rulmanı neden hep ters çakıyor

[@ParsMaker]

nice work

[@柯隆圻]

沒同部一體成刑無法百分之百準確

[@SUNDREDSTAR]

Good thing you put annotations for every operation. Would never have been able to figure out what you were doing to make this otherwise, you know us machinist types are no good with technical things.

[@Stefan_Van_pellicom]

Think about all the poor saps like me who still have to learn to get to your level of wisdom.

Hay quá !

[@chrisford9045]

That thin little shaft will bend......its dangerous

[@josefranciscodesousafranci8128]

👍

[@M3_MvKUBE78]

что за не русское использование резца?

[@ИгорьДедов-к5ж]

Так не русский точил)))

[@ВиталийФ-ч4г]

А это на что то повлияло?))))

[@АлексейШульга-ж7т]

Как всегда , что есть под рукой , тем и точим )

[@captcarlos]

It would be handy if there was a step in the bore for the cup and a step on the shaft for the inner race that that bearing would act as a thrust bearing. At the moment it's a floating.. something. Execution is.. fine Design is lacking somewhat.

[@wilmersaulyaurimuchaaroni3925]

Ese grado no es 30 grados que se da

[@royerringopolo7294]

En si le puedes dar el grado q tu quieras no le hacee...seguro el quiso un grado mas agudoo

[@walterborges4245]

Verdade, o grau é de 30 graus, não 35.

[@sidineizanini9328]

O amigo boa tarde este grau não tem padrão ele achou melhor fabricar co 30 graus mas ficou bom o ponto que ele fez só faltou fazer um tratamento de cimentasao e têmpera

[@h7opolo]

3:09 boring, jk ;p

[@redaslot8013]

Auto sub n like

[@yurycz8933]

+

[@Janne1Hirmu]

Horrible music

[@vickeykumaryadav6600]

Aapka number chahie

[@SomBo-bd3ms]

❤