# Will these stepper motors work?

**URL:** <https://community.inventables.com/t/will-these-stepper-motors-work/17051>\
**Category:** X-Carve\
**Created:** [December 8, 2015, 9:14pm UTC](https://community.inventables.com/t/will-these-stepper-motors-work/17051 "2015-12-08T21:14:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![DriesVerbruggen](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/driesverbruggen/32/67245_2.png) [@DriesVerbruggen](https://community.inventables.com/u/DriesVerbruggen)\
**Post date:** [December 8, 2015, 9:14pm UTC](https://community.inventables.com/t/will-these-stepper-motors-work/17051/1 "2015-12-08T21:14:43Z")

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Hi all,

I’m planning on building an X-carve and I hope to reuse some stuff I have in the studio. I plan on decommissioning one of our old Bits from Bytes Rapman 3d printers and reuse the steppers used in that machine as they are quit powerful. But I’m always a bit intimidated by stepper specifications so I hope you can help me here. The NEMA 17 looks to be exactly the same as the one on Inventables and I would like to use this one for the Z but the 23 I am not sure about… Will these work with the gShield and standard power supply? Thank you!

Here are the specs:

**3 x NEMA 23** M57STH51-3008DC  
-1.8 deg/step  
-Voltage: 2.2V  
-Current/Phase: 3A  
-Resistance/Phase: 0.74 Ohm  
-Inductance/Phase: 0.9 mH  
-Holding Torque: 706 mNm  
-Rotor Inertia: 275 gcm2  
-Detent Torque: 360 gcm  
-Length: 51mm

**1 x NEMA 17** M42STH47-1684SG  
-1.8 deg/step  
-Voltage: 2.8V  
-Current/phase: 1.68A  
-Inductance/Phase: 2.8 mH  
-Resistance/Phase: 1.65 Ohm  
-Holding Torque: 431mNm  
-Rotor Inertia: 68 gcm2  
-Detent Torque: 200 gcm  
-Length: 48mm

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<div class="post-metadata">

**Author:** ![Earwigger](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/earwigger/32/85008_2.png) [@Earwigger](https://community.inventables.com/u/Earwigger)\
**Post date:** [December 8, 2015, 9:56pm UTC](https://community.inventables.com/t/will-these-stepper-motors-work/17051/2 "2015-12-08T21:56:19Z")

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> [@DriesVerbruggen](#):
>
> M57STH51-3008DC

Those appear to be “Double Stack” steppers which means they are longer. They would still work, but stick out farther than the stock motors. I would suggest a single stack Nema 23 for the Z axis, but a double stack works here as well if you mount it upside down. No biggie.

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<div class="post-metadata">

**Author:** ![DriesVerbruggen](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/driesverbruggen/32/67245_2.png) [@DriesVerbruggen](https://community.inventables.com/u/DriesVerbruggen)\
**Post date:** [December 9, 2015, 10:01am UTC](https://community.inventables.com/t/will-these-stepper-motors-work/17051/3 "2015-12-09T10:01:26Z")

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The NEMA 23 mentioned in the BOM are 51mm as well, aren’t these double stack as well?  
But since I only have 3 NEMA 23’s I was planning on using the one NEMA 17 for the Z axis.  
I think dimensions should be fine, I was more worried about electronic specs.

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<div class="post-metadata">

**Author:** ![Earwigger](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/earwigger/32/85008_2.png) [@Earwigger](https://community.inventables.com/u/Earwigger)\
**Post date:** [December 9, 2015, 4:43pm UTC](https://community.inventables.com/t/will-these-stepper-motors-work/17051/4 "2015-12-09T16:43:09Z")

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I was basing my comment on the picture of the stepper when I searched that model number. So perhaps they used a generic picture.

The generic specs should be fine as well. I believe the GRBL shield can only provide 2.5 amps per stepper and that may require some cooling.