Myford Lathe - Genuine Morse Taper 2 (MT2) Collets.

Myford Lathe - Genuine Morse Taper 2 (MT2) Collets. Today we will have a look some genuine Myford morse taper two collets for my Myford ML7 lathe.

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[turningpoint]

Everything you said was I think correct Paul, and unless those collets are seriously worn or there's damage within your spindle, the run out should be very good. Anything Myford made was always to a high standard. But for a lathe, a spindle mounted ER collet chuck either shop produced or commercially obtained can be made to work with basically zero run out. Yes it takes a bit of design and machine work, but it's possible to use the same idea Bison and a few others use to zero the part run out on there 3 and 4 jaw scroll chucks for multiple parts of the same size. Running a Google search using Set Tru, Set True, Griptru etc will turn up the information. But it basically uses a slightly under sized back plate that fits the chucks recess and usually 4 set screws through the rear O.D. of the chuck body to adjust the run out your collet chuck against that back plate and/or any run out the collets may have. You do have to slightly loosen the bolts holding the chuck to the back plate, adjust and then re-tighten. And yes all that is just about as slow as just using a 4 jaw independent chuck. The difference though, is once adjusted it will have the same run out for multiple parts.

For a lathe I don't use the taper mounted ER chucks at all simply because as you mentioned they do prevent longer work through the hollow spindle that was designed in for that exact reason. There only benefit is that there quick to mount or remove. But there's no adjustment, so what you get for any run out your stuck with. Although they make 5C scroll chucks that could be made to work on that Myford, they would really be a bit too large and heavy. As far as speed, a lever or air operated 5C collet chuck is about the standard for most of the world. Unfortunately they require a spindle taper of at least MT 5 and a full set of 5C collets. At the quality and guaranteed low run out I'd expect with any collet set up all that would be very expensive and still wouldn't work with my MT 4 lathe. For people like us, I think the ER collet design and those back plate mounted chucks are about the best compromise. The ER's are still very limited against 5C's and there multitude of accessory's, indexers, square and hex collets though.

[AWDJRforYouTube]

Great video Sir, I don't have a Myford, but a related problem I found on my older Logan lathe the 3AT and 3C collets are limiting on the bar stock thru size up to the largest collet ID=7/16". I recently added a 5C collet chuck and increased my thru bar stock size up to the limit of the spindle ID= 25/32" The scroll action of the 5C collet chuck has much more holding grip than the 3AT-3C.

[PlusPrecision]

Hello Paul, thanks for sharing those i never seen those before. Its nice to see new old things.

[howder]

Great video Paul you can't beat a collet for fast and true setups. I have the adapter type and some times I regret the limited length allowed. Enjoyed, cheers!

[EverettsWorkshop]

That is a very cool idea they had with the way those collets worked, I guess the ER system just eclipsed it as time went on but I can see how the MT system would have its advantages with lathes having smaller spindle bores.

[AmateurRedneckWorkshop]

A collet chuck is a really nice tool to have. Quick setup and relatively accurate.

[Man-in-da-shed]

I’m a long long way off looking at collets for my super 7, but this is interesting.

[MattysWorkshop]

Gday Paul, “you do like a collet”, I’ve never seen this type of collet setup before, only the ER and 5C, I like the myford idea a lot, great video mate, cheers Matty

[RetroSteamTech]

Hi Paul. That's a very interesting collet setup on the Myford, not seen anything like that before. Cheers, Alan.

[adaml]

Hi Paul,
I didn't realise, the Myford lathe has a MT2 spindle bore.
That collet setup looks good.
ATB Adam

[demondunk]

The Myford nose collet setup is great for quick jobs. Wouldn't be with out mine. I also like the lever collet setup From Myford. It uses the Hardinge MA99e collets. The lever setup is very expensive and the adapter to make it work is as rare as hens teeth.

[CraigsWorkshop]

Those are great. I like the spindle nose closure. I think the direct taper collets I've seen in the past have a drawbar to pull them - which also blocks through holding. Those are the best of all worlds. Though I like ER collets for the range of holding size, and price :)

[tooltimechris]

Very clever collet design, I havent seen these yet!

[jonsworkshop]

Nice one Paul, I am jealous, need a collet chuck for the M300. You must have more collets than the collet shop by now! Cheers, Jon

[danielabbey]

Very interesting setup that Myford had for their MT collet system - no drawbar. Being made by Myford, I would expect decent accuracy. My P&W bench lathes and mills all use a drawtube for the collets (3PN, 4PN, and 5PN proprietary).

[craigtate]

What a neat setup. Never seen a set that goes together like this before

[RustyInventions-wzir]

Very interesting. Thanks. I have half a set and didn’t even know what it is. He he. Well I knew it’s collets, but didn’t know it’s for my Myford.

[neilphilip]

Interesting! I just bought a set of collets identical to yours. I measured the run out of the main spindle and it was close to zero - maybe 5 microns. But then we put a new small milling tool into one of the collets and we measured close to a quarter of a millimetre(!) run out on the tool close to the knurled nut - any suggestions as to what is going on? I really don't want to have to return the collets (which appear to have been well looked after) but this level of runout renders them useless...did you get to the second video you mention? Thanks. Neil

[ruperthartop]

Great video. What you say may be correct however i'm lucky enough to have the Myford MA99E collet chuck with a full set of metric and imperial collets. (Yes it cost a fortune). I have to say it is very accurate with little run out. I think either option is great. Using collets for accurate work and a four jaw for larger work is the way to go in my book. Many thanks for sharing

[richpost]

Very nice collet setup with minimal stick-out and good rigidity. Does the Myford provide for a "spider" to support long round stock through the spindle on the outboard end ? I have seen this on some larger lathes, seems like a device you could shop-make yourself if necessary ...