> For the complete documentation index, see [llms.txt](https://tempdocs.zerog.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tempdocs.zerog.one/electronics/stepper-motors.md).

# Stepper Motors

{% hint style="warning" %}
This is **NOT** an exhaustive list, please refer to the relevant documentation and manuals for the motors of your choice.  This page serves merely as a pointer to picking out your hardware.
{% endhint %}

***

### <mark style="color:red;">42STH60-3004AH (Classifieds)</mark>

2.85A RMS | 12.4 Oz-in | XY | Integrated thermistor

{% hint style="info" %}
Very torque heavy but with a slightly lower top speed than 2504's.
{% endhint %}

<details>

<summary>More Info</summary>

<table><thead><tr><th>Type</th><th>Info</th><th data-hidden></th></tr></thead><tbody><tr><td>Phase Resistance</td><td>1.1x(1±20%)Ω</td><td></td></tr><tr><td>Phase Inductance</td><td>2.3x(1±20%)mH</td><td></td></tr><tr><td>Holding Torque</td><td> 12.4 Oz-in | 88 N-cm </td><td></td></tr><tr><td>Rated Current</td><td>2.85A RMS</td><td></td></tr><tr><td>Coil Temp Limit</td><td>180c</td><td></td></tr></tbody></table>

</details>

***

### <mark style="color:red;">42STH48-2804AH</mark>

2.8a RMS | 5.9 Oz-in | XY

{% hint style="info" %}
We have observed heavy VFA when running these motors at 48v.
{% endhint %}

<details>

<summary>More Info</summary>

<table><thead><tr><th>Type</th><th>Info</th><th data-hidden></th></tr></thead><tbody><tr><td>Phase Resistance</td><td>0.7x(1±20%)Ω</td><td></td></tr><tr><td>Phase Inductance</td><td>0.6x(1±20%)mH</td><td></td></tr><tr><td>Holding Torque</td><td>5.9 Oz-in | 42 N-cm</td><td></td></tr><tr><td>Rated Current</td><td>2.8A RMS </td><td></td></tr><tr><td>Coil Temp Limit</td><td>180c (AH) | 130c (AC)</td><td></td></tr></tbody></table>

</details>

***

### <mark style="color:red;">42STH48-2504AH</mark>

2.5A RMS | 7.6 Oz-in | Comes in AH(High temp) and AC configurations

{% hint style="info" %}
Regarded as the best overall steppers for speed and quality.
{% endhint %}

<details>

<summary>More Info</summary>

<table><thead><tr><th>Type</th><th>Info</th><th data-hidden></th></tr></thead><tbody><tr><td>Phase Resistance</td><td>1.2x(1±20%)Ω</td><td></td></tr><tr><td>Phase Inductance</td><td>1.5x(1±20%)mH</td><td></td></tr><tr><td>Holding Torque</td><td>7.6 Oz-in | 55 N-cm</td><td></td></tr><tr><td>Rated Current</td><td>2.5A RMS</td><td></td></tr><tr><td>Coil Temp Limit</td><td>180c (AH) | 130c (AC)</td><td></td></tr></tbody></table>

</details>

***

### <mark style="color:red;">42STH48-2004AH</mark>

2.0A RMS | 5.6 Oz-in | Comes in MAH/AH variants&#x20;

{% hint style="info" %}
Slightly underpowered for CoreXY, best used in Z.
{% endhint %}

<details>

<summary>More Info</summary>

<table><thead><tr><th>Type</th><th>Info</th><th data-hidden></th></tr></thead><tbody><tr><td>Phase Resistance</td><td>1.6x(1±20%)Ω</td><td></td></tr><tr><td>Phase Inductance</td><td>3.0x(1±20%)mH</td><td></td></tr><tr><td>Holding Torque</td><td>5.6 Oz-in | 59 N-cm</td><td></td></tr><tr><td>Rated Current</td><td>2.0A RMS</td><td></td></tr><tr><td>Coil Temp limit</td><td>130c (AC/MAC)</td><td></td></tr></tbody></table>

</details>

***

### <mark style="color:red;">42STH48-1684AC</mark>

1.68A RMS | 6.08 Oz-in | Comes in MAC/AC variants.

{% hint style="info" %}
Underpowered for CoreXY, best used in Z.
{% endhint %}

<details>

<summary>More Info</summary>

<table><thead><tr><th>Type</th><th>Info</th><th data-hidden></th></tr></thead><tbody><tr><td>Phase Resistance</td><td>1.65x(1±20%)Ω</td><td></td></tr><tr><td>Phase Inductance</td><td>2.8x(1±20%)mH</td><td></td></tr><tr><td>Holding Torque</td><td>6.08 Oz-in | 43 N-cm</td><td></td></tr><tr><td>Rated Current</td><td>1.68</td><td></td></tr><tr><td>Coil Temp Limit</td><td>130c (AC/MAC)</td><td></td></tr></tbody></table>

</details>


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