Frequently Asked Questions
1. What is a leadscrew and how is it used?: 

LEADSCREW (pronounced: leed-screw) also, lead screw, lead-screw or screw drive. A Leadscrew is an assembly of a threaded shaft with a mating threaded nut.

The basic function of a leadscrew assembly is to convert rotary motion into linear motion. The threaded shaft is rotated with a motor or crank and the nut travels along the shaft. The resulting motion of the nut can drive a load.

Leadscrews are used in many industrial automation applications. There are many types of threads and mounting configurations used with leadscrews. Leadscrews or screw drives are a time proven, accurate and highly configurable mechanism for providing controlled linear motion.

2. What is the difference between an ACME leadscrew and a Ball leadscrew?: 

Comparing leadscrews versus ballscrews:

An Acme leadscrew uses a threaded screw design with sliding surfaces between the nut and screw.

Ball leadscrew uses a ball nut which houses one or more circuits of recirculating steel balls which roll between the nut and screw.

3. How is a Rolled thread different from a Machined or Ground thread?: 

Comparing Rolled threads versus Machined threads:

The grain structure of a rolled thread is parallel to the surface of the thread. This process results in a strong thread in the axial direction.

A Rolled thread is manufactured using a different process than the Machined or Ground thread. Rolling is a cold forming process, similar to forging, which moves the material to conform to a die. There is zero material removal using the rolling process. The grains of the material flow as the threads are formed. Rolled threads posess an ideal grain structure for axial shear strength which increases the load bearing capacity.

The grain structure of a machined or ground thread is parallel to the axis of the thread. Machined and Ground threads are manufactured using a material removal process. This process results in a weaker thread in the axial direction.

4. What are some benefits of Rolled threads?: 

Some of the reasons why the thread rolling process is beneficial:

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