Opening up a Haas VF3 spindle !!! 

Hi Your welcome, I enjoy doing it and hopefully it comes in handy for other people wanting to do the same sort of thing Thanks Marc

Hi I’ve just watched the same video, very in depth! If I end up replacing these bearings it will probably just be a nice clean up, new bearings and in she goes lol

No problem, glad they help you out I am about to do the next part to the spindle video

Hi Thanks for the info, appreciate that 👍 Glad you like the videos Thanks Marc

Yeah certain dust and materials Kill things very quickly, What kit does you mean? Thanks Marc

Cheers Yeah it’s a great old press for lighter work, really love the older tools like this

Hi The inner and outer bearing spacers are away being re ground now to make sure they are matched heights so the new bearings will have the correct preload When grinding them they also have to make sure the face are perpendicular to the bore so everything compress down evenly not cocked or that can also induce a bend in the spindle Hopefully in a week or so time depending I will be ready to put it back in the machine Thanks Marc

Typical, never mind, I hope to use another spindle and rebuild this one later when I get the spare time and money That video is very in depth but a good watch

Hi Thanks for watching

Yeah I should have heated it with an Oxy Propane torch whilst pressing it out like I did the gear box shrink fit pulley

Yeah its not stainless but im not sure why that specific collar has corroded worse and the rest is all ok

I totally agree, i do love a lot of the old stuff just don't have the room for any more of it lol

Cheers, yeah they were in a bad way for sure, i have my fingers crossed for the other spindle as well then i can get this one sorted when time and money allows Thanks Marc

Thank you

Hi Move never heard of that sort of vfd issue but these old machines can do some strange things at this age lol Yeah the rusting on the bearing collars is strange! They are not a totally sealed unit so it’s likely it could have been moisture in the air supply to cause the rusting like that I think

@@kinzy_fabrications Also, were they ever changing their spindle oil? Maybe it slowly absorbed moisture and lost its corrosion preventatives. It seems odd how very much material was in there, like maybe they were running without out air flowing through the spindle? But I would think that would cook it pretty fast.

Hi Yes after looking at it further id say there was definetly was water/moisture ingress issue. hopefuly when i finally get round to rebuilding it i should never have that issue as i have a very good air dryer on my own system Thanks Marc

Hi Yes i do, and i will be doing another video soon showing the next steps, apologies it has taken so long

Hi On this machine which is a 1998 vf3 the total cost for me to complete the spindle rebuild came to approx €1300 That included new bearings, straightening the bent spindle which I done by heating it too much! Having the taper re ground and news seals etc That does not include my time spent to do it which without filming etc is approx 1.5days including removal and refitting But some of the newer spindles might be different to mine so I can’t comment on yours but if you have the time and are semi confident I’d say why not have a go like I have My advise would be make up some good press tools etc to remove the shrink fit parts rather than the heat like I did and caused damage I have just done another spindle and made up some very basic tooling and removed everything without heat this time Thanks Marc

I did not have 1 but in future I will make something up

Hi I havent removed them from the spindle shaft yet so im not able to tell you this at the moment Thanks Marc

Hi Yeah it is definitely an air oil mist machine and has the separate air oil mist line and metering unit on the back as per my other Haas I’ve had

You'd think the positive air pressure would not let the iron dust in so maybe it failed at some point@@kinzy_fabrications

The air pressure is low but should stop ingress but i think it actually may be more due to water in the air that caused the issue and not cast iron debris like i initally thought

Thank you

Hi I have not yet fully dissasembled the entire bearings assembly yet but will hopefully be doing that soon Thanks Marc

I look forward to the next disassembly video. thank you

Hi mate Yeah seems the bearings have just worn heavily and on top of the cast iron the machine was working in it was all drilling and tapping work so loads of high load stuff that probably wore the bearings even quicker

Hi The spindle is belt driven off of a 2 speed gearbox, thats where it gets the torque from, the direct drive machines get the torque control from the vector drive and wye delta switching

@@kinzy_fabrications Thanks, this was a nice and somewhat tedious video but it gave me an insight on the guts of a CNC milling machine

Lol not on earth

Yes, My Dake 3T.

Thanks, The drawbar can be very tricky to remove from the spindle, it took me a while to fiddle it to get it out but it did eventually. Thanks Marc

​@@kinzy_fabrications el drawbarg se saca siempre golpeandolo hacia arriba verdad si??

Hi Yes it is always removed from he top of the spindle, on the ones i have seen like mine. not sure about newer machines

​@@kinzy_fabrications Gracias por compartir tu conocimiento👏🏻👏🏻 Saludos desde COLOMBIA MEDELLIN CITY...👊🏻✌🏻

Your welcome

Hi Im afraid i do not have a technical drawing of the taper cross section. Thanks Marc

@@kinzy_fabrications I already made the opening, your video encouraged me, thanks

Hi What are you using the 99999 for? I don’t understand?

@@kinzy_fabrications hi marc Thank you. I solved the problem, but I faced another problem, which is "low lube or low" alarm. When I changed the oil for it

I replied to the other message