Mounting a chuck on a Rotary table

[John S]

I'll try to explain the drawing above.

One back plate screwed to rear of chuck. studs and grub screws to match the number of Tee slots.
The grub screw fit into tapped holes in the side and need a taper on them.
The studs have a matching tapered hole BUT it's drill slightly lower than the centre of the grub screw hole.

The idea is that as you tighten to grub screw up it pulls the backplate and table together.

Nice thing about this is that it's not size related to the table. You could fit an 8" chuck to a 6" table using this method.

[BillTodd]

I'll try to explain the drawing above.

One back plate screwed to rear of chuck. studs and grub screws to match the number of Tee slots.
The grub screw fit into tapped holes in the side and need a taper on them.
The studs have a matching tapered hole BUT it's drill slightly lower than the centre of the grub screw hole.

The idea is that as you tighten to grub screw up it pulls the backplate and table together.

Nice thing about this is that it's not size related to the table. You could fit an 8" chuck to a 6" table using this method.

Great idea John :)

My Haighton mill uses a similar mechanism for the swivel table lock:(albeit the other way up)