How to connect second stepper motor?

nielsgeode · Post by **nielsgeode** » Tue Jun 04, 2013 12:15 am

I ordered a second stepper motor from Cognisys and I want to attach it to a horizontal translation stage that I still had lying around.

Yesterday, I received the stepper motor and I'm curious how the same stepper motor is connected to my StackShot. There is only a smooth metal pin without any attachment options (like thread)

Any help is appreciated.
Niels

rjlittlefield · Post by **rjlittlefield** » Tue Jun 04, 2013 12:22 am

Take a close look at your StackShot rail. There's a coupler with a setscrew.

--Rik

nielsgeode · Post by **nielsgeode** » Tue Jun 04, 2013 1:21 am

Of course, I had the moving base blocking view to the coupling piece

How is this coupling piece attached to the stepper motor? How does it look on the "inside"? I don't want to dissamble it...

Craig Gerard · Post by **Craig Gerard** » Tue Jun 04, 2013 2:06 am

That's a 'non-flexible' shaft coupler. It acts like a 'sleeve', attaches to the shaft of the Nema 17 stepper motor and the shaft of the lead screw. There is nothing inside but air.

Non-flexible shaft couplers are used when perfect alignment exists between the two shafts.

Nema 17:

Craig

Guido · Post by **Guido** » Tue Jun 04, 2013 4:48 am

In de modelboat shops you can find these.

They work fine for me

http://www.graupner.de/en/products/1be7 ... oduct.aspx

elf · Post by **elf** » Tue Jun 04, 2013 7:05 pm

As long as the stepper motor shaft is the same size, you can use the existing coupler. If not do a search for "flexible coupling" to find one with the correct size input and output ID (interior diameter).

Guido · Post by **Guido** » Wed Jun 05, 2013 2:33 am

This is a stepper connected with Modelbuilding gear.