Which circular connector for spindle

[Doddy]

I wasn't looking for a GX-16 style connector, it could be anything as long as it is not too bulky or too expensive. So I guess I would need a 5 pin connector to implement the shield as well, is that correct?

If the connector shell is conductive (metal) then that should be bonded as well. Often the shield is connected to the connector shell, but if you can spare/spec a pin then this provides a predictable low-impedance path to earth, and would be a good thing.

There's two goals here:

1) Equipotential bonding of all exposed conductive elements - for that reason the metal connector shells should be bonded to earth.
2) Electrical shielding of EM-emissive cabling - for that reason the shield should contain as much of the cable run as physically possible - achieved by bonding the braided sheaf to the connector shell.

[ROBCNCAU]

Ok,

I think 4 pin should do the job then, at the spindle end I will have the braided shield isolated from the connector shell and then at the control box end I will connect the braided shield to the connector shell.