soba centre square

Hi OM,

Excellent work .... How is the HBM. Must confess I have only bought Toolmex or Bison and never hand any problems... But my wallet is very much lighter!

OS

As a semi legal aside the responsibility for supplying goods of merchantable quality lies with the supplier not the manufacturer. You have a contract with them and therefore they are required under the Sale and Supply of goods act to make sure what they supply is what you thought you were buying. It may be of interest to any of you that own Saab's you thought were under warranty. Since they went bust your dealer will tell you the warranty is void. It aint necessarily so as the warranty is between you and the dealer. There I go digressing off topic again, but if you can remember who sold you the duff gear at the exhibition contact them, they will be closer than the manufacturer and probably are more fluent in our native tongue

ATB Andries

My concern now is my new HBM 6 inch 4 jaw chuck

I purchased a HBM camlock 3 jaw chuck with 2 piece jaws as a replacement for the Harrison 330VS at work & it is good in all respects - fits the spindle well, the jaws are a good fit in the body & grip the workpiece parallel. The top jaws are a very snug fit the the base jaws. I did a runout check on a bit of ground bar when it arrived, though I can't recall the reading - but it was low enough not to be an issue.

We also use RDG's ER collets at work on CNC VMCs, as they are a lot cheaper than the industrial suppliers & the ones I have checked have been very good for runout. No complaints from the operators about them either.

At home I have a HBM rear QC toolpost on the Super 7 - again, nicely finished, the tenon fit the tee-slots snugly & it works well.

The same cannot be said of the supposedly Myford fit Soba ER collet chuck - which doesn't. I should have sent it back (bought at Harrogate last year), but didn't get around to it at the time. It is tight, though, so it will get sorted eventually. But a small Soba boring head with interchangeable shanks is nicely made, the 2MT shank fits the machine taper well & it works fine. Perhaps Soba have a QC problem, or maybe they buy in from different suppliers for different products & just brand them all Soba ? It does seem to be a bit of a lottery as to how useable their products are.

Nigel B.

I have a small Soba machine vice. Otherwise very accurate, the jaws were at about 87 degrees to the axis of the vice instead of 90. Some judicious milling restored order, until the thread in the moving jaw (it is a combined left/right hand thread for faster movement) stripped. I managed to replace it with a suitable single thread bar .

Neil

I had the same experience. It was too tight to fit the rigister. I should have sent it back but did the model engineer thing of fixing it. When I finally managed to pursuade it on, it ran so far out, my knackered 50 year old three jaw, which was retired to a shelf about fifteen years ago, ran better. I couldn't be bothered after that and it went in the bin. I then bought the Myford one which ran perfectly. By contrast, I've also got the Soba centre finder in question and my one is fine. However the damage is done and I won't be buying anymore Soba stuff.

Hi Chris

At the risk of an accusation of Grandmothers and eggs - it should be a tight fit on the register.

I too bought a SOBA ER collet chuck and tried and tried to get it onto the S7. I was about to return it but, luckily, hit on the solution. The problem was one of precise alignment. I chucked a piece of 1/4" silver steel in my tailstock chuck, put the appropriate collet into the ER chuck, and closed it to be a sliding fit on the rod. Sliding the collet chuck up to the mandrel it screwed straight on to the full depth of the register. Run- out measured on the ground inside face of the chuck is not perceptible on any equipment that I have. I 've had this chuck for a couple of years and I find the above method is the best and quickest way to fit the chuck.

This leaves the question - did your "fixing" of the problem destroy the accuracy of the chuck?

Regards

Norman

Edited By NJH on 24/05/2012 11:19:17

I too have a SOBA Myford fit ER collet chuck. Fits perfectly on my S7 spindle (and also on my "non used" myford nose reference tool. Concentricity (run out) is not really measureable ie less than 0.0001" [0ne ten thousanth).

Forget the legal stuff, any supplier worth his salt will exchange the item or give you your money back. If they will not, say so on this Forum!