# Supporting Motion ## Why Supporting Motion is Important Supporting the assemblies that move on the robot is very important. Without planning proper supports, [shafts](/duo-build/motion/intro/shaft.md) may not be able to spin or actuators could be easily damaged. ## How to Support Motion Forces, or loads, that are at a right angle to the shaft are the most important forces to counteract. The floor pushing on a wheel or two gears pushing against each other are two examples of these forces. ![](/files/-M7xcTZvUyCgkBPWPr8a) It is best to support a shaft with two supports, one on each end. Without two supports, the shaft can pivot in the direction of the force. If, and only if, two supports are not possible, it is very important to minimize the distance between the force and the single support. ### Some products that can be used to support motion assemblies are: * Bearing Pillow Blocks ([REV-41-1317](https://www.revrobotics.com/rev-41-1317/)) is recommended for supporting shafts in heavy duty applications * Motion Bracket ([REV-41-1303](https://www.revrobotics.com/rev-41-1303/)) used in tandem with a bearing --- # Agent Instructions: 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: ``` GET https://docs.revrobotics.com/duo-build/building/supporting-motion.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.