It would be great if all the parts and pieces of your manufacturing process last forever. Unfortunately, that isn’t the case.
As you design and develop your process, consider the life expectancy of your ball screw so you can plan for the future. At PST, our engineering and manufacturing professionals are experts at determining a ball screw’s life expectancy and can reverse engineer failing screw threads for a custom solution.
Calculating the Life Expectancy of Your Ball Screw
A precision ball screw’s life expectancy is calculated using the static and dynamic capacities applied within the specific applications. Based on the diameter and lead of the screw, the stroke length, material and hardness, as well as the circuitry of the ballnut, PST can calculate the life expectancy for any ballscrew assembly.
We use the DIN specification DIN-69051 to calculate the dynamic and static capacity, which is based off of a limit of one million revolutions of the ballscrew.
In simple terms, if the ballscrew is operated with a load equal to the dynamic capacity, the screw will have a life expectancy of one million revolutions. If your specific application requires more than one million revolutions, we can design a custom screw thread to meet your requirements.
Planning for the Screw’s End of Life and Component Failure
Even if you’re working on a brand new project, it’s important to consider the end of your ball screw’s life.
If your ball screw is nearing the end of its life on an existing project, you have two options: reengineer and replace the component or send PST your used assembly for a rebuild.
At PST, we’re experts at handling both options. To keep downtime to a minimum, PST can supply a replacement ballscrew assembly. Even if your ball screw is a custom build, developed by a competitor, we can design, develop, manufacture and supply a replacement. But keep in mind; depending on the environment and the usage, there are certain times that an assembly cannot be repaired after a completed life cycle. In those cases, a complete reengineer is necessary.
Reengineering a Solution
There are instances when a ballscrew has not met the requirements of a particular application. PST can disassemble a damaged precision ball screw assembly and evaluate what failed within the assembly. Using specific applications, we can verify existing assemblies have the ability to meet any requirements. If the existing components don’t meet your needs, we can reengineer components so they do.
Custom Ball Screws
Whether your current ball screw is failing, or you’re planning for a future project, it’s important to consider the end of your ball screw’s life while crafting your manufacturing process. The experts at PST can help you. Contact us today to get started.