Double Shafts?

[kolias]

Why the stepper motors have the shaft front and back?

What is the purpose?

Thank you

[ger21]

You can get them with one shaft or two. Depending on the application, you can use the rear shaft for many things. Instead of the front shaft. In addition to the front shaft. For an encoder. Mount a handwheel to it.

[Eurisko]

Originally Posted by ger21 ... you can use the rear shaft for many things... Mount a handwheel to it.

Ger,

I know that cranking a stepper manually will generate a voltage at the leads. Try wiring two steppers together and cranking one of them. The other stepper will match the rotation of the first.

My question is, would mounting a handwheel and cranking a stepper cause any problem to the stepper, drive or power supply?

[ger21]

I don't think you can spin it fast enough to do any damage. But I'm not an expert.

[kewlkiwi]

Originally Posted by kolias Why the stepper motors have the shaft front and back?

Could be the 'back end' is to fit a damper on?

http://solsylva.com/cnc/dampers.shtml

Bob

[ger21]

Yep, you can use it for a damper too.

[Hirudin]

Having two shafts also gives you more mounting options if you're building your own CNC machine.

[kolias]

That's a very good link kewlkiwi

Thanks