Sorry, my bad before - the incoming supply is to R,S, and E=Earth. The output is the UVW terminals (wired Blue, Brown and Earth wire <naughty>), ah, so it was three phase and you're looking to wire the new spindle similarly?, looks do-able.

We could still do with what Clive asked for - a better image inside the terminal housing on the spindle. What you've described are six terminals - two for each winding, and three windings for a three-phase motor. The manner these have been described wires the windings in what's known as a delta configuration. Normally this is one of two types of configuration, the second being "star configuration", and is normally used for a "proper" three-phase 415VAC-across-phase supply. The delta configuration is more typical of a 220VAC three-phase supply much as you might expect from a simple VFD.

What's confusing me is that you've described the wiring identically for 220V and 330V operation. I suspect there may be other markings, perhaps subtle, on the terminal enclosure to describe better the difference between 220 and 330V operation.