How Do You Get Pinion Gear in SolidWorks?

In SolidWorks, the pinion gear is an essential component used in various mechanical assemblies. It plays a crucial role in transmitting motion and power between gears or other mechanical components.

Getting Started

Before we dive into the process of obtaining a pinion gear in SolidWorks, let’s first understand what a pinion gear is. A pinion gear is a small-sized cylindrical gear with teeth that mesh with the teeth of a larger gear known as the spur gear. This interaction between the two gears enables rotational motion to be transmitted from one shaft to another.

Step 1: Open SolidWorks

To begin, open SolidWorks by clicking on its icon or accessing it from your Start menu or taskbar. Once SolidWorks is launched, you will be greeted with the main interface.

Step 2: Create a New Part

Next, create a new part file by going to File > New > Part. This will open a blank canvas where you can design your pinion gear.

Step 3: Sketching the Gear Profile

Now it’s time to sketch the profile of your pinion gear. In order to do this, you will need to activate the Sketch tool located on the top toolbar or use the shortcut key S. Once activated, select the plane where you want to create your sketch (e.g., Front Plane).

Note: The specific steps for sketching may vary depending on your version of SolidWorks. However, the general principles remain consistent.

Step 4: Draw Circles and Teeth

In this step, draw circles representing the base diameter and outside diameter of your pinion gear. The base diameter is the diameter at the bottom of the gear teeth, while the outside diameter is the overall diameter of the gear including the teeth.

Next, create teeth by using a combination of lines and arcs. Ensure that the teeth are evenly spaced and symmetrically aligned around the circle.

Step 5: Define Gear Parameters

To accurately define your pinion gear, it’s important to specify various parameters such as module, number of teeth, pressure angle, and helix angle. These parameters determine the size, shape, and behavior of your gear.

You can set these parameters by going to Tools > Equations or by directly editing them in the sketch dimensions window.

Step 6: Extrude and Finish

Once you have sketched your pinion gear profile and defined all necessary parameters, it’s time to extrude it into a 3D shape. Use the Extrude tool located on the top toolbar or press E to activate it.

Select the sketch region representing your gear profile and specify the desired extrusion depth. You can also add any additional features or modifications at this stage.

Finally, click on OK to complete the extrusion process.


You have successfully created a pinion gear in SolidWorks! Now you can incorporate it into your mechanical assemblies or further refine its design using additional tools and features provided by SolidWorks.


  • Save your work regularly: It’s always a good practice to save your progress frequently to avoid losing any changes.
  • Experiment with different parameters: Feel free to modify the gear parameters to achieve the desired gear characteristics and performance.
  • Use assemblies for complex designs: If your design involves multiple components or intricate mechanisms, consider creating an assembly file to manage and assemble them more efficiently.

With this comprehensive guide, you now have a solid foundation for creating pinion gears in SolidWorks. Remember to explore and experiment with different features and functionalities provided by SolidWorks to enhance your design capabilities.

Happy designing!