acme screws

In many devices lead screw assemblies are used to convert motion from rotary to linear and vice versa.  Historically these assemblies have had poor efficiencies and relied on grease for improved performance.  

Over the past few decades the advent of engineered polymers and new manufacturing capabilities have changed the game for the conventional lead screw assembly making it a powerful solution for motion based design challenges.  

At first glance lead screw assemblies seem rudimentary, but they are designed to perform a very specific function, and even with the latest developments in materials and manufacturing processes having a basic understanding of how lead screws operate can be the difference between a successful design and catastrophic failure.