High Speed Spindle for SIEG X2 Mill - getting technical

[isvflorin]

Hi there,
I have no ideea about the dialect, might be even Japanese, it's all Chinese to me (pun intended). Here is the datasheet. There are 3 bearings all laser etched in arrow shape, 2 of them are paired and the 3rd seems to be the 4th bearing from another pair (like they initially were 4 bearings all laser etched in matching pairs from start to end bearing - from this configuration of 4 bearings I have numbers 1,2 and 4, judging by the etching on the side)

[BobWarfield]

The laser etchings are orientation marks that tell you which face goes which way and how to rotate them in their pocket to minimize the runout. NSK's will be documented on their web site. At the very least, go check out how to line up the marks.

I suspect you will be able to tell from the site whether you need a spacer, but I'll bet not.

Also, those are inspection sheets. The diagram is telling you pretty clearly how it wants to sit for proper preload. Note the offsets in microns. Take the bearing code, 7008ATYP5, and go look it up on the NSK site.

Best,

BW

[isvflorin]

Bob,
NSK website was the first thing I checked of course. However these apear to be really old stock bearings and they changed numbering since. The new numbering is different and can't see any corelations between.
They are probably old style numbering, who knows from how many years ago.
I'll keep looking, however the datasheet gives some micron numbers that appear to be tolerances and dimensions of inner and outer race.

I would be really nice not to need spacers, I guess there is a simple test I can make, just assemble without spacer and see if there is axial play ?

FLorin

[BobWarfield]

Take a closer look at the diagram on the lower left. Those dimensions are displacements from the resting state of the bearing. Looks like preload to me.

Worst case is you need a spacer the thickness they're calling out. And yes, your penalty for having gotten them cheap is you will need to painfully wade through their online site to figure out their numbering. If you just did a search, forget it. There are multiple bearing catalogs. Go find every one of them that deals with angular contact bearings, print them out, and scan through them by hand. It's a lot of work, but you'll learn quite a lot about bearings doing so.

Your second penalty is you're going to have to do some experimentation. That's ok too. Wait until you see the page in the bearing catalog that tells you what the tolerances for mounting the bearing are supposed to be. It will take you a trial or two at the lathe to hit anything close to those tolerances unless I miss my guess!

Cheers,

BW

[ee_t]

Hi there,
I have no ideea about the dialect, might be even Japanese, it's all Chinese to me (pun intended). Here is the datasheet. There are 3 bearings all laser etched in arrow shape, 2 of them are paired and the 3rd seems to be the 4th bearing from another pair (like they initially were 4 bearings all laser etched in matching pairs from start to end bearing - from this configuration of 4 bearings I have numbers 1,2 and 4, judging by the etching on the side)

NSK being a japanese company should give you some clue to the language of the document.

Here is a google translation of the columns:

Difference method 受外 泽寸 pongee
Difference in bearing 泽寸 Law
Outer ring radial runout
Outer ring axial runout
Inner ring radial runout.
綸 axial runout in
Inner horizontal deflection

① front gap width
② width of the rear differential

2nd page:

Handling Precautions

1. The large bearings grease seal, please use as they are.

Large sealed bearings are not lubricated Gu Su Su 1, which is also fine to use it in situ, grease rust before Me-hee coarse vertical (or oil) and iron powder not 混大 to eliminate waste O 觔 Meshimasu to be washed with white 淸浄 kerosene.

2) to bring harmful results caused the wound shock and stroke in the orbital plane of the bearing during assembly, please be careful, especially dealing.

3) sign indicates radial runout of poetry place 般大 way or chamfer the inside and outside the ring E (or O) 埸合 殳 mount on the shaft axis in the visible, this E (or 0), wet place Me the. resultant plants together and place your going to be the opposite position 镢 up correctly and eccentricity of the axis: ^ Please. The outer 叫絵 places including the eccentric position of the box 较大 铀受! Sign of the outer ring and E (or 0) As mentioned I made the mounting position of the opposition will correctly position the whistle.

[isvflorin]

Many thanks,
I'll keep working on the Frankenspindle and let you know how it turns out.

Florin

[Big-tex]

Herbertkabi

Very nice work, I must admit I can only wish to accomplish some what you have done.

I have questions for you,
I would like to build ATC that attaches to electric motor (with brushes) with build in variable speed working up to 20.000 rpm. This is for router application.
I have seen cartrige that usovo sells but it is wrong size. I have no clue how they have them constructed to release drawbar when 6-8 bar of pressure is applied. Do you have any drawings or designs.

BTW Wy gavaritie po ruski?

[Herbertkabi]

Herbertkabi

Very nice work, I must admit I can only wish to accomplish some what you have done.

I have questions for you,
I would like to build ATC that attaches to electric motor (with brushes) with build in variable speed working up to 20.000 rpm. This is for router application.
I have seen cartrige that usovo sells but it is wrong size. I have no clue how they have them constructed to release drawbar when 6-8 bar of pressure is applied. Do you have any drawings or designs.

BTW Wy gavaritie po ruski?

"Po ruski" is not mu mother tongue but I do it well, can read and speak easy, writing comes with lot of typos.
My own ATC ... its so-so, Im not very pleased with result, mostly because Im weak with to use and install different programs ...
but there all are on the one(!) hollow shaft ( 1-Model.jpg ).
This actual spindle changes 1/8" bits only.

I have bought two Usovo ATC, one just for Sherline, another was full ATC water cooled spindle WZW105 I bought without motor inside, motor I built and installed myself. Also Tool Magazin SK15 with dust cover, more sk15 toolholders and control box ... Usovo ... this guy does not want to speak with you very much, was very hard to get adequate answer to asked questions ... just wiggled out of, most of newer replied.
There are two bearings on the bottom, back/back, no more supports!, are angular contact bearings but not super precision, described max speed by Usovo exceeds factory described max speed of bearings somewhere 5krpm ...
There are piston and common spiral spring (missed in the photo) inside ... interesting solution, yes, but rigidity ... Im very-very sceptic!
Usovo SK15 toolholder fits exact in to ER16 - angle 8 degrees. So, if you buy Usovo SK15 toolholders, you can build your own ATC spindle using some hollow ER16 collet holder, just little bid thinkings, turnings, borings ...
Also Usovo drawbar can be made longer and easily used ... I have tried and this is OK.
Added photo about ATC for Sherline,
About Usovo full ATC Spindle ... Im not sure is it good idea to show detailed photos how it is made
cheers,
herbert

[Big-tex]

Thank you Herbert

I am kind of interested in design that they have and translate it to different size
tool holder that can hold collets with 1/2" shank tools for example ER20 BT30 or ER20 BT40. I like to use industry standard tool holders.

Usovo does not offer that. I do understand design is simple and it works!
Mechanical portion of it. Programming and controlling I will do in mach using control board I have. I am not looking to mass produce it.

I also speak russian I can not read and write any more it has been way to many years. I have learned the language during communist years in late 70's visiting Tibilisi running around and playing with kids.

Your help is greatly appreciated.

[wam]

Here is an alternative for a motor to drive the spindle.

Green Tube Video - Green BD -

[Riceburner98]

So, I guess there's no way to block people from posting spam.. (@ press guy from India)

Cool video of the alter-motor there..

[shadowvoice]

I have bought two Usovo ATC, one just for Sherline, another was full ATC water cooled spindle WZW105 I bought without motor inside, motor I built and installed myself. Also Tool Magazin SK15 with dust cover, more sk15 toolholders and control box ... Usovo ... this guy does not want to speak with you very much, was very hard to get adequate answer to asked questions ... just wiggled out of, most of newer replied.
There are two bearings on the bottom, back/back, no more supports!, are angular contact bearings but not super precision, described max speed by Usovo exceeds factory described max speed of bearings somewhere 5krpm ...
There are piston and common spiral spring (missed in the photo) inside ... interesting solution, yes, but rigidity ... Im very-very sceptic!

Well... I also bought ATC head for Kress from Usovo (first version). And must to admit that most of mentioned above is true.

First and foremost I'm totally unhappy with communication with that guy. Everything goes OK until You pay a bill. Since that moment Your fortune is is in Your hands...

ATC head on it's own looks to be an idea worth to work out, but for now - it still looks for me to be a very raw project.
BTW - everytning mentioned re bearings it true. And even worse - thease bearings build up heat heavily ;-)

Much worse it goes with air control unit STG01m which is badly overpriced and... "interestingly" designed. I'd say it's a crap. I had to replace all pneumatic components to get it working more or less reliable.

Summary in short words - I spent a hell of time and efforts trying to get it working in reliable manier, but - ok, now it's collecting dust on the shelve.