Does anyone have any knowledge of Steinel SV4 vertical milling machines and could help me with this problem please?

A friend has a Steinel SV4 vertical mill purchased from a late club members estate but unfortunately it did not come with a manual so we are guessing at some of the features.

The problem is how do you remove the MT collets from the collet holder?

There is a square (approx 1/2” , 12.7mm) on the top of the quill which may be a drawbar lock and a large flat spanner that fits some approx 2” (50mm) flats on the collet locking nut. Do you hold the square and use the spanner on the flats or is there some way of locking the spindle so you can use the spanner and how much force should be required to undo the collet nut as it’s seems solid at the moment?

Any ideas please?

Thanks for the replies to my request for assistance on the Steinel SV4 mill.

Thor: If we can’t work out how to lock the spindle then investing in a manual might be the answer but it’s a hefty price and in German I suspect.

Brian: My friend can’t reach both the nut on the spindle and the collet at the same time and then hit the spanner with a hammer so I’ll visit next week to give a hand or take photos of him attempting to do this.

As you say there should be a spindle lock on it somewhere as I don’t see an industrial machine would have been acceptable without one if it’s going to take more than one person to change a cutter.

Thanks for the suggestions.

Thanks for the links JohnF.

We had another go at undoing the collet nut today using more ignorance and a bigger hammer but it won’t budge.

Tried translating what must be technical German but don’t understand what a “specify rod “ is.

We’ll keep trying.

The problem can now be solved I think.

John Hinkley: Your hints on the translation make sense as the “specify rod” turns out to be the “draw bar” which fixes or locates another part, i.e. a collet.

Dick H: The second link leads to an English translation of the manual in two sections, in section one for the horizontal mill there is a diagram and parts list which has a better description of the parts than the vertical mill. The manual for the horizontal mill includes a diagram for the vertical head attachment which has the same internals as the vertical mill.

The two parts I was tracking down turn out to be the “Part 268 Draw bar for vertical milling attachment” and “ Part 269 Nut for loosing the tool”.

So it looks like you hold Part 269 and the large conical nut.

Just to help clear any confusion between the vertical and horizontal part numbers they are V321 = H268 and V322 = H269. The large conical nut has the collet fit inside it.

mgnbuk: We were holding the large conical nut (55mm AF) and trying to undo the drawbar but as the drawbar is only 9mmAF it didn’t seem large enough to take the force. What the above parts list indicates I think is to hold Part 269 and the conical nut. I thought Part 269 was attached to the splines on the spindle but it seems it can't be in this case.

Part 269 is 36mm dia and has 4 slots to take drive pegs. I have a C spanner to fit this size but may make a socket with 4 drive pegs so as not to damage the slots.

Thank you for your help.

I will let you know how we get on with this.