# More Gearboxes and Accessories

## WCP Rotation SS Gearbox <a href="https://wcproducts.com/products/wcp-rotation-ss-gearbox" class="button primary" data-icon="list">Product Page</a> <a href="https://app.gitbook.com/o/jQ1oA79yIGzA6fO0uMWk/s/H8TQZqbGZEuCYiNmohd8/" class="button primary" data-icon="book-open">Manual</a>

A 2 stage gearbox designed around the new friction brake. This gearbox is perfect for arms or turrets and many other situations where an axis needs to rotate.

* Ideal for arms and other low revolution speed mechanisms
* Easy integration with [Friction Brake](https://wcproducts.com/products/friction-brake-ratchet)
* Ability to get more reduction by mounting a VersaPlanetary Gearbox
* Fixed or adjustable mounting options

<figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FaWP0Cbk0LO9JVvgNxTIf%2FRotation%20SS%20-%20Cover.svg?alt=media&#x26;token=571dccda-5652-47a3-837d-f19e5ef985fc" alt="" width="563"><figcaption></figcaption></figure>

### Gear Ratios

{% hint style="info" %}
The table below shows the final ratio for all combinations of the first and second stage ratios.
{% endhint %}

<table data-header-hidden data-full-width="false"><thead><tr><th width="117"></th><th width="100"></th><th></th><th></th><th></th><th></th><th></th><th></th></tr></thead><tbody><tr><td></td><td><strong>8:60</strong></td><td><strong>9:60</strong></td><td><strong>10:58</strong></td><td><strong>11:58</strong></td><td><strong>12:58</strong></td><td><strong>13:56</strong></td><td><strong>14:56</strong></td></tr><tr><td><strong>16:60</strong></td><td>28.13:1</td><td>25.01:1</td><td>21.75:1</td><td>19.76</td><td>18.11:1</td><td>16.15:1</td><td>15:1</td></tr><tr><td><strong>18:58</strong></td><td>24.17:1</td><td>21.49:1</td><td>18.69:1</td><td>16.98:1</td><td>15.56:1</td><td>13.89:1</td><td>12.89:1</td></tr><tr><td><strong>20:56</strong></td><td>21:1</td><td>18.68:1</td><td>16.24:1</td><td>14.76:1</td><td>13.52:1</td><td>12.07:1</td><td>11.20:1</td></tr><tr><td><strong>22:54</strong></td><td>18.41:1</td><td>16.37:1</td><td>14.24:1</td><td>12.94:1</td><td>11.86:1</td><td>10.58:1</td><td>9.82:1</td></tr><tr><td><strong>24:52</strong></td><td>16.25:1</td><td>14.45:1</td><td>12.57:1</td><td>14.12:1</td><td>10.47:1</td><td>9.34:1</td><td>8.67:1</td></tr><tr><td><strong>26:50</strong></td><td>14.42:1</td><td>12.83:1</td><td>11.15:1</td><td>10.14:1</td><td>9.29:1</td><td>9.29:1</td><td>7.69:1</td></tr><tr><td><strong>28:48</strong></td><td>12.86:1</td><td>11.43:1</td><td>9.94:1</td><td>9.03:1</td><td>8.28:1</td><td>7.39:1</td><td>6.86:1</td></tr><tr><td><strong>30:46</strong></td><td>11.5:1</td><td>10.23:1</td><td>8.89:1</td><td>8.08:1</td><td>7.41:1</td><td>6.61:1</td><td>6.13:1</td></tr><tr><td><strong>32:44</strong></td><td>10.31:1</td><td>9.17:1</td><td>7.96:1</td><td>7.25:1</td><td>6.64:1</td><td>5.93:1</td><td>5.50:1</td></tr><tr><td><strong>34:42</strong></td><td>9.27:1</td><td>8.24:1</td><td>7.16:1</td><td>6.51:1</td><td>5.97:1</td><td>5.32:1</td><td>4.94:1</td></tr><tr><td><strong>36:40</strong></td><td>8.33:1</td><td>7.41:1</td><td>6.44:1</td><td>5.86:1</td><td>5.37:1</td><td>4.79:1</td><td>4.44:1</td></tr><tr><td><strong>38:38</strong></td><td>7.5:1</td><td>6.67:1</td><td>5.8:1</td><td>5.27:1</td><td>4.83:1</td><td>4.31:1</td><td>4:1</td></tr></tbody></table>

## Friction Brake & Ratchet <a href="https://wcproducts.com/products/friction-brake-ratchet" class="button primary" data-icon="list">Product Page</a> <a href="https://app.gitbook.com/o/jQ1oA79yIGzA6fO0uMWk/s/rUMuwQvzDRcE76BfKCn0/" class="button primary" data-icon="book-open">Manual</a>

The Friction Brake allows you to aid your PID controller in holding an arm, elevator or another subsystem in place or even completely hold your mechanism in place without any motor power!

* Easy integration with your design
* 1.875" and 2" bolt pattern compatibility
* Compatible with the Rotation SS Gearbox and WCP Bearing Block

<div><figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FnkbXzlrdQyTdbiRMHGwV%2FFriction%20Brake%20-%20Cover.svg?alt=media&#x26;token=3fedbee7-dba8-491c-9a37-9dd1844c460a" alt="" width="375"><figcaption><p>Friction Brake</p></figcaption></figure> <figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FnLe5Ld2bPg1cxmZJbczD%2FRatchet%20%26%20Prawl.svg?alt=media&#x26;token=aac07cce-22b0-47e9-830e-23aa40810f9e" alt="" width="375"><figcaption><p>Ratchet &#x26; Pawl</p></figcaption></figure></div>

#### Ratchet Plate (1/2" Hex)&#x20;

The Ratchet Plate is designed to replace the traditional 1/2" hex wrench while also giving teams an easy and direct mounting experience with the integrated #10 hardware clearance holes.

<figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FdDhSGzSH3AERuewsWL35%2FRatchet%20Plate.svg?alt=media&#x26;token=4c874452-8bcf-4af9-8f6a-5af358cb3861" alt="" width="375"><figcaption></figcaption></figure>

## Miniature Linear Servo Actuators <a href="https://wcproducts.com/products/miniature-linear-servo-actuator" class="button primary" data-icon="list">Product Page</a> <a href="https://app.gitbook.com/o/jQ1oA79yIGzA6fO0uMWk/s/gEG1GkSxO05Z8fz121rw/" class="button primary" data-icon="book-open">Manual</a>

These nifty little linear servos act like pneumatic air cylinders, but are powered by an electronic servo instead of compressed air! This means that not only do they provide reliable linear motion, but also have the added bonus of being able to extend to any position in its range of motion, not just full in or full out!

* Available in 50, 100, and 140 mm stroke lengths
* 35:1, 63:1, and 150:1 gear ratios
* Servo powered actuator does not take up a PDP slot
* Mounts like a pneumatic air cylinder

<figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FxFpl6r3iMTLAEiDBkWHJ%2FActuator%20-%20Cover.svg?alt=media&#x26;token=5cddcdb8-ff82-43cc-bc43-9942b09fd53a" alt="" width="375"><figcaption></figcaption></figure>

<table><thead><tr><th width="268">Stroke Option</th><th width="150">50mm </th><th width="149">100mm </th><th>140mm</th></tr></thead><tbody><tr><td>Mass</td><td>56g</td><td>74g</td><td>84g</td></tr><tr><td>Max Side Load (extended)</td><td>40N</td><td>30N</td><td>20N</td></tr><tr><td>Closed Length (hole to hole)</td><td>118mm</td><td>168mm</td><td>208mm</td></tr><tr><td>Feedback Potentiometer</td><td>6kΩ+-50%</td><td>11kΩ+-50%</td><td>16kΩ+-50%</td></tr></tbody></table>

<table data-header-hidden><thead><tr><th width="270"></th><th align="center"></th></tr></thead><tbody><tr><td>Feedback Linearity</td><td align="center">Less than 2.00%</td></tr><tr><td>Input Voltage</td><td align="center">6VDC</td></tr><tr><td>Stall Current</td><td align="center">650mA @ 12V</td></tr><tr><td>Operating Temperature</td><td align="center">-10C to 50C</td></tr><tr><td>Audible Noise</td><td align="center">60dB @ 45cm</td></tr><tr><td>Ingress Protection</td><td align="center">IP-54</td></tr><tr><td>Mechanical Backlash</td><td align="center">0.25mm</td></tr><tr><td>Maximum Static Force</td><td align="center">250N</td></tr><tr><td>Maximum Duty Cycle</td><td align="center">20%</td></tr></tbody></table>

## Accessories

### Output Shafts <a href="https://wcproducts.com/collections/systems-structure/products/output-shafts" class="button primary" data-icon="list">Product Page</a>

WCP offers several different premade output shaft options made from 7075-T6 Aluminum. These shafts are correctly toleranced such that they fit perfectly through bearings and hubs, without extra work.

#### Output Grooved Shafts

* 4" Long x 1/2" Rounded Hex Shaft (1/2" Snapring Groove)
* 6" Long x 1/2" Rounded Hex Shaft (1/2" Snapring Groove)
* 8" Long x 1/2" Rounded Hex Shaft (1/2" Snapring Groove)

<figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FquxNI8AxNLEEBg6CJm5i%2FWCP-1368.svg?alt=media&#x26;token=6e76f5ad-20ec-44c5-a53b-c5117564d86b" alt="" width="300"><figcaption></figcaption></figure>

#### Output Rounded End Grooved Shafts

* 4" Long x 1/2" Rounded Hex Shaft (1/2" Round, 1/2" Snapring Groove)
* 6" Long x 1/2" Rounded Hex Shaft (1/2" Round, 1/2" Snapring Groove)
* 8" Long x 1/2" Rounded Hex Shaft (1/2" Round, 1/2" Snapring Groove)

<figure><img src="https://1911150060-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FByQLBt0bw4wTa9DDV1kH%2Fuploads%2FOeLuTAmpveCebqhcsEQS%2FWCP-1505.svg?alt=media&#x26;token=c782f80d-d471-41c4-9b2b-3bc923dae39b" alt="" width="300"><figcaption></figcaption></figure>