ER32 collet use.

Warco part number 9027

Not the same thing, Kwil - it's the same type everyone else is talking about and needs the intermediate backplate. ..... see the link in my earlier post for the Soba type that I was referring to that screws straight on ... (albeit only in ER25 now apparently).

Edited By Bandersnatch on 27/05/2015 18:10:23

I have an ER32 Collet chuck made by HBM which screws directly on to the Myford spindle. I`m certain I bought it from RDG but there is absolutely no sign of it anywhere on their site. Nor can I find any reference to it anywhere else on the web.

I`ve had a dig around on the net & found that Harold Hall has complete instructions on making the same type of chuck (and ER32 as well !) on his website. Nice little project & not to difficult.

Alan

After some thought, I purchased a 400mm ER32 collet chuck and a suitable Myford pattern back plate, from Arc Trade Euro. I have just finished machining and fitting it. On testing the internal taper at several points, I found the maximum runout to be about half of one tenth of a thou! Very pleased with the result. I have no connection with Arc Trade Euro, other than as an occasional and very satisfied customer.

In order to fasten the chuck to the back plate, I required three screws. I went to Apex Fasteners on Slough trading estate in Berks. The chap that served me found the correct screws for me, didn't complain when I changed my mind about the length, and when I came to pay for them he said "put fifty pence in the Poppy Appeal Box". I gladly put more than that in. What a great firm! I have used them for several years now and they are so helpful, knowledgable, and have no minimum charge. I know that few readers of this forum will be able to use them, but I just wanted to say how great they are! Such a refreshing change. Again, I have no conection with them.

Maurice

I've managed to grip quite short lengths using this trick.

Steve

That's a great tip Simon - it will get used today in fact as I have some short 'ends' that are the only ones from the scrap box that are the right size for the job in hand!

Something I found useful recently - relating to ER32 collets (well collet blocks actually) - that may be worth sharing (sorry if it's a "sucking eggs" thing to some here)

I was cutting a M12 thread on some bronze (using a solid die) and had got it started true in the chuck but was struggling to put the cut on (work slipped and it was hard to grip things tightly in situ - a touch of arthritis doesn't help.

It occurred to me to move the work to my ER32 collet (square) block - the collet held the work very firmly and I was able to hold the block itself in the vice - applying the necessary torque with both hands then became much easier.

I have tended to think of the collet blocks as tools to aid my machining (e.g. flats/squares/hex on the ends of bars etc) but I think I will be using mine a lot more in future to hold round work for hand work - they are much more secure than just using a vice...

Regards,

IanT