Stem Pinions

A stem pinion is a small gear mounted directly onto an integral shaft, or "stem," rather than being bored to fit onto a separate shaft. This design allows the pinion to be installed straight into bearings or mounting supports without requiring additional shafting or keyways, simplifying assembly and reducing the number of components needed in a drive system. Stem pinions are commonly used to mesh with a rack or larger gear, converting rotary motion into linear motion or transmitting power between shafts. Their compact, ready-to-mount design makes them a practical choice for applications such as rack and pinion systems, instrumentation, and light-duty industrial machinery where simplicity and ease of installation are important.

We work closely with the leading manufacturers to provide gearing solutions to meet the requirements of your unique applications.

If you have any questions, write us via live chat (one of our team members will answer your questions), give us a call, or send us a quote request. The HVH team is always ready to help you.

1(866) 577-4040

or