Difference of closed-loop stepper technologies

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Okay, the title basically says it all. Stepperonline has closed-loop steppers with a magnetic encoder and an optical encoder?
The magnetic one has nearly an identical size to the open-loop steppers we are using now: https://www.omc-stepperonline.com/de/nema-17-schrittmotor-mit-geschlossener-regelkreis-56ncm-79-3oz-in-mit-magnetischem-geber-1000ppr-4000cpr-17hs19-2004-me1k
This one that my kit has has an optical encoder and is a lot bigger: https://www.omc-stepperonline.com/de/nema-17-closed-loop-schrittmotor-52ncm-73-64oz-in-mit-encoder-1000ppr-4000cpr-17hs19-2004d-e1k (the other question is: why didn’t I take the 100oz stepper, it’s just 2€ more… I think I feared it might be too high for the core… Damn…).

What’s the difference between those two? The price is the same, the one with the magnetic disc are a tad stronger, so why would I buy the one that I just bought?? I really have no idea, because the magnetic ones could be fit on Y as well as Z.

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I don’t see the full kit like you I believe you ordered for the magnetic ones - so you’d have to buy the controller and programming cord separately.

They appear to have the same basic specs…

This site seems to suggest that magnetic are newer:

They also suggest that magentic is more robust…but can be affected by nearby magnetic fields while optical are more resistant to outside influence.

It sounds like magentic are newer and may have been more expensive of an option until recently…

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Thanks. For the magnetic one there are no kits yet, I ordered the optical kit. And I am really happy with it, but the steppers are a lot longer than the magnetic ones.

I just did the math and regrettably outfitting Y and Z with steppers and drivers would be 270€. That’s gotta wait a bit, but I am pretty sure I am going to try that sooner or later.

If someone has some experience with it, out with it, I’ll gladly take it. Otherwise you will have to wait until I have the money. :stuck_out_tongue:

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Do you really need the encoder?

Wouldn’t this be more useful? One on the x axis and perhaps mod the Yz plate to fit them in the z axis too

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A closed loop stepper drive without an encoder is… A simple stepper motor.

So is the difference between 65Ncm and 59Ncm enough to fix lost steps? That’s the difference between what Ryan sells in the shop and the linked stepper. 6Ncm. 10% more torque.

My bet is the closed loop stepper for at least X on a LR would potentially be a far larger improvement than 6Ncm more torque.

I suppose as more of us play with these we’ll get more reports on the pro/con of them.

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I haven’t used the closed loop motors really.

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here are some helpful information for the linked CL 17’s

this still a thing? @Tokoloshe

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It’s been connected for a while, thanks. The thread was about the differences. :yum:

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i would like to test this but for the z axis as well.

lol, i need to finish the 2 builds first

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