DIN 6388 OZ Collets

[Tony Wells]

Well, seeing that I don't have a 1" holder for the 50 taper, it is useful as it is for that. So I'll probably keep it unless I can trade it for something like an ER 40. I probably won't try to modify the chuck. It's hard, so I'd have to grind it anyway. I don't have the time to mess with it right now.

Well, my forum life has boiled down to 3. There was just too much to keep up with. Two for machining and one for antique radios. That's plenty. Sometimes, I have too much work going, and don't get to post much anywhere, and sometimes I have plenty of time, so I get to comment a lot. I'm just glad I can.

[stevec]

Tony, I'm undecided as to whether the time spent on forums is a gain or a loss, particularly when info is incorrect or erroneous and I'm speaking of the recieving end as well as the sending.
This forum, however, is special in that nobody pontificates information (or misinformation) it is exchanged freely and peacefully.
I still check the site I used to frequent but tend not to post.
All this to say this place is laid back and great!

[Tony Wells]

Yep Steve, there's a lot to be said for a group that gets along well and you don't get all the animosity like seen on some sites. But no need to bring all that up. We all know why we're here.

[starlight_tools]

(08-23-2012, 05:44 PM)Tony Wells Wrote: Well, seeing that I don't have a 1" holder for the 50 taper, it is useful as it is for that. So I'll probably keep it unless I can trade it for something like an ER 40. I probably won't try to modify the chuck. It's hard, so I'd have to grind it anyway. I don't have the time to mess with it right now.

Well, my forum life has boiled down to 3. There was just too much to keep up with. Two for machining and one for antique radios. That's plenty. Sometimes, I have too much work going, and don't get to post much anywhere, and sometimes I have plenty of time, so I get to comment a lot. I'm just glad I can.

Tony

Sounds like a good plan on the holder, hang onto it as it has a size you need.

As for forums, I monitor a bunch of yahoo groups, and keep my eye on a few forums, but since I was IP banned for life for no known reason that I could determine on my old favourite haunt that I spent hundreds if not thousands of hours fixing stuff on I have been laying low and not doing much at all. I have posted a bit to SFT and here. Do not do much with PM although I did find a link to a gentleman that gave me all sorts of help designing my low profile bridge crane. Otherwise keeping very busy with work and not much time for leisure.

SteveC

Yup misinformation can be a bad thing. I am trying to do my part to mentor those that have less experience than myself and find that the forums and yahoo groups is a good way to at least try to help. There are not many in my area that are infolved in this type of work and those few I can help out person to person, but the rest, I do my best to help out where I can. Also, I have found that I have learned a lot in doing all this mentoring so seems to work out good alround.

So when push comes to shove, yup, I think that these forums do more good than bad, and mis-information gets corrected quickly and I know that I have made friends that I would otherwise never have met.

Walter

[SnailPowered]

I think the problem with forums is that some people try to act like they know something because it was on wikipedia or came from another site. I like to refer to this as "telling someone else's lie." Not necessarily that you were being malicious but you do need to check sources. I just try to make sure when I post something that I haven't experienced myself I point out that it makes logical sense but may or not be the correct answer. I try to not perpetuate "telling someone else's lie."

[tlfamm]

These Grizzly collets are OZ25:

Models T10067 thru T10070


I suspect these are as well:

Models SB1348 thru SB1351

http://www.grizzly.com/catalog/2012/Main/652

The "T" series (and probably the "SB" series) are made by SYIC:
http://www.syic.com.tw/collet/83800.htm



Note:

1. Grizzly can't/won't special order single collets or chucks from the above series.
2. Since the exact specification of the collets is not disclosed, Grizzly is free to switch to a different collet type and still sell them under the rubric "quick-change collet".

[Tony Wells]

On those Grizzly collets, how do you determine that they are OZ style? Just comparing them to the R8 adapter, they appear much smaller than the one I have. The adapter I have is a 50 taper. Grizzly doesn't appear to have anything as large as the 50 taper series. The other link you provided seems to, but it is not very clear how to order from them, if it even if they sell direct. Probably have to find a distributor. And their selection is a little confusing as well on which one matches what I have.

But I appreciate the links, those I haven't run across yet.

[tlfamm]

I don't have access to the DIN 6388 specification, so my knowledge of these uncommon collets is not satisfactory or complete.


"EOC", "OZ", and "SYOZ" are related acronyms/product-designations, and all apparently refer to some flavor or other of DIN 6388 collets (some of which are specified in one of the following series: OZ6,8,10,12,16,20,25,32,40,50).

Elements from my Grizzly T10068 collet set are inscribed as follows:

R8 chuck: "R8 X EOC25"
chuck closing nut: "Shin-Yang EOC25 Clamping Nut"
Collet: "3/8 0850 SYIC" (I think the "0850" may be a production-machine ID (or perhaps batch ID) - some collets share a number, some have a unique number).



My EOC25 collets are 52mm long, and the lip diameter is 35mm, consistent with DIN 6388 (apparently).

see: http://www.techniksusa.com/metal/cnadin.htm



I imagine that all of the Grizzly products I mentioned previously are from the EOC25 series: hence they would not be compatible with your OZ38 collet.
----------------------------------------------

I'd love to know more: Machinery's Handbook gets mighty thin where collet systems are concerned.

[tlfamm]

@Tony Wells:

"The other link you provided seems to, but it is not very clear how to order from them, if it even if they sell direct. Probably have to find a distributor. And their selection is a little confusing as well on which one matches what I have."

I recall seeing some number of distributors of OZ/EOC collets (USA, China, Germany, elsewhere) in previous web investigations - so since you already have the chuck, you may have some success in buying more collets. (I don't think SYIC sells in less than 100-lot(?) units.)

I wanted to buy just an MT3-spindle chuck, and I couldn't find anyone who sold such outside of a complete set (such as Grizzly/SYIC sell).

[Tony Wells]

Well, if this will help ID yours, here is a chart: