Helix Linear Technologies Blog | Articles, how-tos and information on the latest linear motion topics.

Most design engineers know that a mechanical linear actuator is a device that converts rotary motion into linear movement—such as lead screws, ball screws, and acme screws.

High-end, motion control lead screw applications only perform as anticipated when the screw is matched with the right acme nut—whether the acme nut be available as a standard component or produced from a specific custom design.

Today’s motion-driven automation environments demand effective linear motion control systems, such as lead screws and ball screws. Although lead screws are often seen as less expensive substitutes for ball screws, making a decision on which type of screw to use is a lot more complicated than focusing solely on cost.

Acme screws are a mainstay for supplying motion and positioning control in many types of machinery, including CNC milling machines, lathes, syringe pumps, linear actuators, 3D printers, and robotic systems.

The coefficient of friction, wear life and resulting torque to drive acme screws and acme screw assemblies are highly controlled by the ability of the engineered plastic to supply sufficient lubrication to the nut and screw interface.

In short, a linear actuator is a device that creates linear (straight) motion. From highly complex applications to the simplest button pressing application, small linear actuators are used everywhere!

Lead accuracy is the difference between the actual distances traveled versus the theoretical distance traveled based on lead. Obviously, the better the lead accuracy, the better precision you have.

The acme thread form, established over 100 years ago, replaced square thread screws, which had straight-sided flanks and were difficult to manufacture.

There are so many benefits of using PTFE coated screws to improve and enhance your products and applications. Before we get into some benefits of choosing PTFE coated screws, here's some more information on the product itself:

Not sure which material to use for your acme nuts? Learn the basics of the materials used in acme nuts and how to compare them with our helpful PowerPoint that we have created for you. Please note that all Helix materials used have been selected for low friction, minimum wear, long life and clean operation.