Hello Nicholas,

I don't know the model, but suspect the arbour is located by a morse taper fitting which is pulled into location by a drawbar from the rear at the pulley block. The front end would be supported by a casting from the overarm with a precision bush in it. That is the general pattern for horizontal machines

You say there is a pin through the nut at the rear, indeed a hole is visible in your picture. I don't see any purpose for that at all. I think that the drawbar has been pulled up very tight and you will need to take it by surprise to free it off

Try fitting a drive belt to the pulley on the largest diameter, twist it up with a bar close to the pulley to get a good grip on the pulley and anchor the bar to something on the machine body to stop it moving.

Now fit a ring spanner on the nut, not open ended you need the full ring contact and belt the end of the spanner with a hammer; don't be timid about this, a good hefty whack will be needed. That should free the drawbar thread so that you can unscrew the drawbar. Undo it by a couple of turns and with a lump of flat brass on the head of the nut, give that a good belt with your hammer to jolt the tapers free.

After this treatment it should all come to pieces in the usual way

Best of luck

Brian

Edited By Brian Wood on 02/08/2022 17:38:41

Nicholas,

Slacken off that drawbaw, maybe half a turn. Tap the hex head with a soft hammer. This will loosen the mt3 fitting. Then undo drawbar fully and remove arbor.

Hi Nicholas, did you manage to remove the drawbar? I have a similar machine and the drawbar is easily removed by undoing the hexagon head (mines standard right hand thread, but yours maybe left hand) a few turns and then giving the end of it a tap with a soft faced hammer to loosen the far end as AJAX says. The arbour end has a 3/4 in’s plain shaft that fits into the mandrel.

I’ve made a couple of fittings to fit into the end of the mandrel, one that will take a fly cutter and another threaded to match my lathe spindle nose.

John.