Normally you do not require a regulated supply for servo's.
Your going to need at least a 1.5kva transformer.
You might try Anatek, he makes and sells Toroid transformers on ebay under jonango.
You then need a 4 diode bridge and you will need to go with some very large capacitance values for smoothing.
The is uncommonly low voltage for CNC servo's, higher voltage is obviously usually available and this makes it easier to spec in lower current devices for the same wattage.
Is this for servo duty or spindle?
Are you replacing a 186w motor with a 1.6kw over 8 times larger?