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Acme Screws

A reliable source for Ball Screw information and leading Ball Screw Companies & Manufacturers.

Acme threads are easier to manufacture than square-threaded screws. Trapezoid-shaped threads can bear heavy loads, which makes acme screws a popular choice in lead screw systems. Lead screws are tools used to convert rotational motion into linear motion. When a specially designed nut is paired with an acme screw, as it moves up and down the screw, force is exerted linearly on one side of the nut, depending on its direction of motion. Read More…

Acme Screws Acme screws are a type of threaded rod characterized mainly by trapezoidal thread shape. Compared to other thread shapes like squares, trapezoids allow for long term, high performance use with minimal thread degradation.
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Leading Manufacturers

Bethel, CT  |  800-245-5013

Del-Tron Precision, Inc. produces and supplies various automated equipment, such as ball screw actuators. Our engineers have designed our ball screws to offer accuracy that is unparalelled by competitors.

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Del-Tron Precision, Inc. $$$

Bethel, CT  |  800-447-2042

When it comes to ball screws, no one does them better! We offer same day shipping to ensure that your product will be sent to you as soon as possible in order to keep your business moving smoothly.

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Tusk Direct, Inc. $$$

New Berlin, WI  |  800-298-2066

For over 70 years, Dynatect has provided motion control solutions for a wide range of markets. Our ball screws are custom-engineered for both OEM and replacement applications. Not only can Dynatect manufacture new ball screw assemblies, we can also reverse engineer, optimize and repair ball screws from almost any manufacturer. All work is conducted in a modern ISO 9001:2015 certified facility, with experienced technicians, onsite engineering, and inspection/test equipment. Contact us today and we will find a solution that works perfectly for you.

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Dynatect Manufacturing, Inc. $$$

Somerset, NJ  |  800-322-6150

AdvanTech International Inc. (ATI), established in 1951 as a specialized international trading company has evolved into a global sales and a market development organization. Driving product leadership, ATI partners with global leading manufacturers to deliver engineered product solutions through our strategically located operations.

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AdvanTech International $$$

Radford, VA  |  540-633-3549

Thomson Linear Motion offers the most complete line of precision ball and lead screws, in both metric and inch diameters, for industrial, medical and aerospace applications. We also provide ball screw repair of any design and any manufacturer to original performance specifications. Thomson is the name you can trust for high quality, innovation, on-time delivery, controlled costs and reduced risk. And, call us or any of our 2000+ distribution partners around the world for fast delivery of replacement parts.

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Thomson Linear Motion $$$
placeholder image Del-Tron Precision, Inc. Tusk Direct, Inc. Dynatect Manufacturing, Inc. AdvanTech International Thomson Linear Motion

Lead screws are used in all kinds of machines to generate precisely controlled lateral parts movement. They can be used for delicate equipment movement or they can be used to move large plates in crushing applications. Acme screws are self-locking, which means that they prevent unwanted backdriving. Backdriving is the unintended reverse motion of a nut.

acme screws Acme Screws - Universal Thread Grinding Company

There are many applications in which backdriving could be catastrophic, particularly those that involve load bearing. Acme screws eliminate this risk because of their thread shape and angle. Acme screws are useful in applications including load carrying, linear actuating and quick threading. They are also valuable components in valve stems, clamps, table lifts, jacks, screw press drives, machinery slide drives and other kinds of machinery.

The main disadvantage of using acme screws compared to other screw varieties (like ballscrews) in creating linear motion is the high amount of friction between the threads and the nut. This greatly reduces efficiency, requiring a higher force input to overcome the resistance caused by friction. However, acme screws, among screw designs that involve direct thread-nut contact, are comparatively efficient, and that efficiency can be increased when split nuts are employed.

The use of split nuts also compensates for wear, extending the operating life of the screw. Acme screws are available in a selection of nut materials, lubrication types, lead and thread forms, speed, length, and strength. For example, the type of load an acme screw uses could be static, dynamic or a compression load.

The specifications chosen for a particular acme screw depend on the requirements of the application. Due to variable effects of friction, lubrication and cleanliness, the lifespan of acme screws cannot be predicted pre-purchase, but proper lubrication, consistent maintenance, and operation within specified limits all aid in maximizing performance of acme screws.

Acme Screws Informational Video