I have a JHF 2030 router and wish to control via Mach3. The stepper motors have no identification marks at all and the manufacturer of the machine is not replying.

They are 8 wire. 12.7mm (1/2") shaft with keyway.

I am a very skilled toolmaker but not very good at electronics.
Is there a way to establish the characteristics of stepper motor without a datasheet.

cheers
Jopo