Hi Andrew,

I believe Stefan G has the 'close-loop stepper' version of these on his Sorotec router (I could be wrong). As I give him 15 marks out of 10 for pretty much everything, I, for one, would be happy to emulate him. He has the 'closed-loop steppers' rather than the servos to avoid having to play around with the servo params.

He has, I think, the 3 Nm IHSS60-36-30 ones - you are looking at the 180W iHSV57-30-18-36-21-38s?

BTW I have found that JMC has a plethora of parts with similar part numbers.

Alan