Acme, ballscrew, custom thread… if you’re just starting a project, choosing a screw thread that meets your needs can be more than a little confusing. Luckily, our engineering and manufacturing experts can help you determine which thread will work best for you.
Thinking about an acme screw thread?
Acme screw threads are typically used for axial loads, not radial. They have a 29 degree thread angle and are capable of handling greater thread capabilities with diameters from ¼” to 6”. Most acme threads are rolled, but they can also be ground. They can be manufactured to general industry specifications as well as custom requirements.
As a cheaper alternative to linear motion purposes than a ballscrew or roller screw, acme screw threads are frequently used on machine tools, including jacks, linear actuators, etc.
Acme screws work well when radial lads are present or for projects requiring tighter tolerances. Although they are typically made from 1045 or 4140 material, including bronze/brass alloy, there are also coatings available to protect from harsh environments.
What about a ballscrew?
On the other hand, if you need a custom ballscrew for a special linear motion application, PST can help you choose a ballscrew that will work for your particular application.
At PST, we routinely develop ballscrew assemblies to meet specific requirements, including custom components in a wide range of diameters and lengths. We also have a variety of thread leads and preloads available. We can work around your motor’s speed and torque capabilities to provide a ballscrew that will work for your application.
As you consider your options, don’t forget to take into account the life expectancy of your ball screw. Ultimately, a ball screw’s life expectancy is dependent on its dynamic and static load capacity. (Load capacity is the load that can be consistently applied to the ballscrew assembly that will result in a minimum of 1 million inches of travel.)
At PST, we engineer ballscrews to meet your exact requirements, including utilizing protective coatings, lead accuracies, materials and sizes.
Ready to get started?
Contact us today.