Clarkson Autolock chucks 40int are they worth selling

Hi

As the title, i have a (I think) a small collet chuck with 40 int taper and a large with 40 int taper

The small chuck has 6,10,19 & 1/4,3/8,3/4 collets and I've made and used the 12mm & 1/2" collets.

The large has some collets but I've not measured them yet, I used to use these years ago with an old milling machine that has since been scrapped and now I'm having a huge clear out before my new lathe is delivered.

So are they worth much? I've looked on Ebay but they all seem to be buy it now so it doesn't give you much indication of what people are willing to pay.

Thanks
Steve

Mmm, the smaller one might be a medium, the collets are 22.17mm o/s.

Steve

Collets sell for about £10 to £20 each metric being dearest, a clarkson s type autolock with a set of collets will sell for between £60 and £100, they are still the best way of securely holding threaded shank cutters,they CANNOT get dragged out of the collet when cutting tough materials,

Check if there are any being sold on eBay. You'll get an idea of their value or just let them run on a biding auction. Good quantity tools are like gold dust and there's always someone looking for what you have I'm sure!

Edited By Johnboy25 on 18/04/2015 18:05:33

Although they appear on ebay at quite high prices I'm not so sure they actually sell. Not many home sized mills have 40 tapers so the demand isn't as high as R8 .

I put one on ebay last month, one collet holder and 7 assorted collets (which a friend was throwing out) hopeing to get maybe 20 pounds for the lot. I was instantly offered £120, needless to say I accepted!

I picked up an Osborne Titanic II (which is just as good as a Clarkson but hasn't got a magic name) for £25 at MEX. Everyone else must have thought that was too much as this was late on Sunday.

It's definitely better than ERs at holding threaded cutters - but one question is when will the supply of threaded cutters dwindle away? Nice bit of kit, anyway.

Neil

Lot's of old threaded cutters out there Neil - you just need to be able to sharpen them, as many have seen a good deal of use by the time they do come along.

I have an MT2 Clarkson 'S' that I use in preference to my ER32 chucks where possible - but in fact I've never had an ER slip on me yet - but I guess I don't push them too much either.

This has just reminded me though - I have an Int. 30 Clarkson 'S' somewhere that I don't use. Must dig it out and flog it.

IanT

Threaded cutters are now a special item out here. The reps I deal with do not stock any threaded cutters now. Only 1 supplier that I know of has them and they are more expensive than a coated solid carbide cutter up to 10mm diameter. With the clarkson, I used to have a set of threaded ends to make the collets be able to hold non threaded cutters. Never had one come loose or let go. But now they have a full set of R8 collets, so just use those instead most of the time. The Clarkson is handy when you are drilling some holes or change back to milling, the the table or head height does not have to be adjusted so much.

The ER series work well, but the tool really needs to have 90% or better length location into the ER collet, or else they have a tendency to clamp harder on the back of the item and in turn leads to the cutter walking out of the collet.

For the smaller diameter cutters, I like to use the smaller collet series. As for the sale price on an AutoLock setup, the 2nd hand market for them is a joke. Especially when you consider the quality of the AutoLock unit and how well made they are and what their new price as the time. But that must be a sign of the times I guess. I have an Autolock, but won't ever sell it. For the odd time that I do use it, is worth the shelf space.

Neil

Hi

Thanks for the replies, I had a look on ebay and found plenty with buy it now but that doesn't give me an indication of the price they are selling for, however I think I'll put them on a bid auction rather than buy it now.

Still got to find out if the small one is a small or medium though.

Thanks
Steve

I suspect that the reason that there are a large number of Autolock style chucks on Ebay is that the threaded cutters are falling out of favour with commercial machine shops. So said machine shops are offloading the chucks. The same is true of the Dedlock chucks; I don't think new cutters are available for these. In a fit of stupidity I bought an INT40 Dedlock chuck a couple of years ago. Fortunately I've also managed to pick up some 3", 4", and 6", Dedlock cutters at an advantageous price.

I have a small R8 Autolock lookalike chuck and large and small INT40 Autolocks, one Clarkson, one Dormer. They don't get used very often, but can be useful, especially for home made custom cutters, like this:

Like everything else the chucks are worth what somebody is prepared to pay.

Andrew