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View Full Version : Best way to connect to stepper motor



toozie21
03-06-2014, 08:33 AM
I have some stepper motors that i want to use in a project. They look a lot like this:
23407

I have a feeling that they were ripped out of an old printer/plotter. What I am not sure, is how to handle the sprocket-like part on the shaft (don't know the real name for it, maybe cog belt gear?). I assume that it is pressed on, so there is no way to remove it, so do people just drill a hole into it for a homemade setscrew, or do you buy the belts somewhere? How should I best proceed?

LightUp
03-06-2014, 09:54 AM
... What I am not sure, is how to handle the sprocket-like part on the shaft (don't know the real name for it, maybe cog belt gear?). I assume that it is pressed on, so there is no way to remove it, so do people just drill a hole into it for a homemade setscrew, or do you buy the belts somewhere? How should I best proceed?

The best way to remove a gear or pulley is to use a "wheel/gear puller" for press fitted items.
This guy made his own; http://www.instructables.com/id/Cheap-and-Simple-Gear-Puller/
You can Google for more similar ideas.

toozie21
03-06-2014, 10:09 AM
Ah, OK, like you have to do with a pulley on an small engine (I was actually reading up on those last weekend). OK, that makes sense. What do you put on in its place?

LightUp
03-06-2014, 01:57 PM
... What do you put on in its place?

That depends on what you use it for. It could be a gear, pulley, or an arm for linkage control, .... or a hand of a clock. :)