Self-Reversing Screw Assemblies

Screw assemblies, such as a lead screw or ball screw, are used in applications when rotational motion must translate to linear motion. However, when the application requires a single direction of rotation, self-reversing screw assemblies are the best option.

What Is a Self-Reversing Screw Assembly?

For most screw assemblies, you need a shift in direction to return the nut to the starting position of the application. The self-reversing screw requires no direction change, making it more efficient and useful when a change in direction would cause a problem. The design of the self-reversing screw uses a unique nut that has a follower blade in it. This matches with the grooves of the screw, allowing it to reciprocate motion.

Self-Reversing Screw Assemblies Applications

When are self-reversing screw assemblies needed? With several screw applications to choose from, it’s important to understand when the self- reversing option is necessary. The self-reversing screws are sometimes called level winders or spooling screws because of their ability to wind heavy cables successfully and neatly—and often thousands of feet long.

Let’s look at a list of common applications in which the self-reversing screw works well:

  • Spooling heavy cables on winches for offshore industries 
  • Winding of ropes in crane construction 

Whenever you need industrial-strength spooling, use the self-reversing screw so that layer upon layer of cable, yarn, hose, or rope is safely taken care of and wound properly. At Wedin International, we have provided self-reversing screw assemblies for over 40 years. Whether in stock or built to suit your application needs, you can trust Wedin for the designing, manufacturing, and repairing of your reversing screw assemblies. Contact us for more information.