hybrid steppers

**Muzzer** · 18-01-2018

Originally Posted by Boyan Silyavski

This Hybrid stepper is driven at 36VDc and we all know it must be driven at 70VDC and 4.5A , so-I dont think so.

I dont see a benefit in a hybrid stepper anyway. Prefer servo motor or a plain stepper.

Sorry I bothered to offer an opinion. Seems you have an expert here who knows all the answers!

It didn't know that "it must be driven at 70VDC and 4.5A" - that must be a universal truth I wasn't aware of. Sounds as if it will be a hell of a beast. Motors as big as the machine itself.

**Boyan Silyavski** · 18-01-2018

Originally Posted by Muzzer

Sorry I bothered to offer an opinion. Seems you have an expert here who knows all the answers!

It didn't know that "it must be driven at 70VDC and 4.5A" - that must be a universal truth I wasn't aware of. Sounds as if it will be a hell of a beast. Motors as big as the machine itself.

Now you know.

**Robsuffolk** · 02-02-2018

Thanks all for the advice it's helped a lot in my research.
Hi George, it was always the intention to convert as the first project been fun machining the mounts for the CNC conversion on it. Yes i was aware of you plans for the kit but quite enjoying the process of the conversion.

Think i've come to the thinking of nema23 3Nm steppers on the x-y and Nema 34 4Nm on the Z, C5 1605 ballscrews on all axis with double ballnut i'll direct drive to start of with to to see how it goes may change to being belt driven in future from Zapp. Leadshine 808 or 828 stepper drivers. Intention is to run LinuxCNC.
Does that sound like a sensible approach?
Thanks in advance
Rob

**Snapper** · 02-02-2018

I have steppers with encoders fitted to the shaft on my lathe. The real benefit is when you reference off the switches at power up they repeat to 0.00mm every time, so no need to touch off at the beginning of the day to account for the error in the switch. And as the spindle is encoded too, threading.