> For the complete documentation index, see [llms.txt](https://docs.wcproducts.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wcproducts.com/welcome/gearboxes/planetaryx/assembly-instructions/px-180-degree-gearbox/steps-1-4.md).

# Steps 1-4

{% hint style="info" %}
The following steps will use the 1/2" Hex Male Coupler for the Planetary Assembly.
{% endhint %}

## Step 1

Install the 17mm ID x 26mm OD Radial Bearing into the Input Block. It is a snug fit and can be installed by hand or with an arbor press, if necessary. The bearing should be fully seated in the Input Block. 

Next, position the Male Input Hex Shaft into the Input Block in preparation for assembly

<figure><img src="https://3780174091-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHsaEh283Wbjq6h8k68Rq%2Fuploads%2F85obN8mC2VLg6LQFUwrU%2FPX%20180%20Degree%20Gearbox%20-%20Step%201.svg?alt=media&amp;token=1312dc0f-743a-462b-831e-7341568e7716" alt="" width="563"><figcaption></figcaption></figure>

## Step 2

Place the Output Shaft into the Output Block and use the #10-32 x 1/2"L Bolt to secure the shaft.

{% hint style="info" %}
The Output Shaft in the picture is only for reference, the shaft will vary based on user application.
{% endhint %}

<figure><img src="https://3780174091-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHsaEh283Wbjq6h8k68Rq%2Fuploads%2Fc1yPa9nnGDDULIsXiDVi%2FPX%20-%20Step%202.svg?alt=media&amp;token=a5108dda-7673-43fc-a88d-a72f40ca842b" alt="" width="563"><figcaption></figcaption></figure>

## Step 3

Combine the assemblies from Step 1 and Step 2 with your selected gear set stack-up to achieve the desired gear ratio. Each gear set should sit flush against the next. Secure the full stack-up to the Output Block using the four #10-32 SHCS bolts specified below.

{% hint style="info" %}
Refer back to the [Load Ratings](/welcome/gearboxes/planetaryx/general-info/load-ratings.md) Section for your desired overall gear ratio and the corresponding gear sets.
{% endhint %}

| Stages  | Bolt Length |
| ------- | ----------- |
| 1 Stage | 1.5"L SHCS  |
| 2 Stage | 2"L SHCS    |
| 3 Stage | 3"L SHCS    |

<figure><img src="https://3780174091-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHsaEh283Wbjq6h8k68Rq%2Fuploads%2Fg5Ifhk4wbDJNSoNsGvN8%2FPX%20180%20Degree%20Gearbox%20-%20Step%203.svg?alt=media&amp;token=b70d9f9e-2be1-4f4d-aab8-b59afe43408d" alt="" width="563"><figcaption></figcaption></figure>

## Step 4

Install the 1/2" Rounded Hex ID x 1-1/8" OD Flanged Bearing into the Gearbox Plate.

<figure><img src="https://3780174091-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHsaEh283Wbjq6h8k68Rq%2Fuploads%2F1hNRafqdP3861UMMxPVh%2FPX%20180%20Degree%20Gearbox%20-%20Step%204.svg?alt=media&amp;token=2101082d-e9ec-4eff-bc23-f8ded2605d59" alt="" width="563"><figcaption></figcaption></figure>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.wcproducts.com/welcome/gearboxes/planetaryx/assembly-instructions/px-180-degree-gearbox/steps-1-4.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.