Precision Ball Screws

Dynatect manufactures “precision ground” ball screws with a lead accuracy of +/-0.0005″ cumulative with the best lead times in the industry. We’re experts in custom ball screws, large sizes, and ball screws with high repeatability. Our engineers assist with new ball screw designs, improving existing designs, retrofitting, and converting other types of screws.

Getting a quote is as simple as sending us your specifications or a print. We can also reverse engineering from your old part.

Expediting new ball screw assemblies in 2 weeks: Machine down? Emergency ball screw repair in as little as 24 hours!

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Engineered Ball Screw for Precision Motion Applications

Dynatect is a manufacturer of engineered precision ground ball screws designed to meet the demands of precision motion control applications.

The Mechanical Ingenuity of Ball Screws

A ball screw is a mechanical apparatus designed to convert rotational motion into linear motion. The fundamental elements of a ball screw comprise a nut and a screw featuring helical grooves, along with ball bearings. The balls move in a continuous path between the nut, the screw, and the grooves, orchestrated by the rotation of either the screw or the nut. They follow a trajectory within the ball return system of the nut, traversing from the initial point to the endpoint and then returning to the starting position. Wipers are strategically positioned on either side of the nut to act as a protective shield against debris, which can shorten the life of the ball screw assembly.

Applications Requiring High Accuracy

Precision ground ball screws find optimal application where a high degree of travel accuracy is non-negotiable. Travel accuracy is defined as the deviation, represented by the measured lead minus the specified lead. Specifically, within machining operations such as metal cutting and grinding, achieving dimensional tolerances, and ensuring repeatability are critical. Besides machine tools, some ideal applications for precision ball screws include replacing hydraulics on training equipment (convoy training, flight simulators), simulation technologies, and motion platforms.

Not Every Application Requires Precision

Acknowledging the nuanced requisites of diverse engineering applications, not every operational context necessitates the highest precision. In situations where straightforward transport tasks are at hand, and the highest degree of accuracy repeatability is not imperative, the utilization of precision ground ball screws may exceed practical necessity. This is especially relevant in material handling and automated transport lines, where streamlined motion control systems demonstrate effectiveness without compromising performance.

9 Reasons to Choose Dynatect Ball Screws

1) “Zero Lost Motion” Solutions

We customize your design to minimize backlash and eliminate deadband

2) Superior Wiper Technology

Dynatect’s unique wiper design results in a greater wiping surface and better sealing than traditional wipers

3) Best Lead Times in the Industry

We understand the urgency in your operations, and our commitment to prompt delivery sets us apart

4) Easy to work with

Ball screw assemblies can be manufactured based on drawings, a sample unit, or the specifications you provide. Need CAD files? Our fully automated CAD system allows us to design in real-time, so we can deliver a model early in your project.

5) Made to Your Specification

You are not “locked in” to a few ball screw and nut designs in a catalog. We can offer a solution that is easy to install, saving you money by minimizing the need to retrofit or adjust other components.

6) Size Flexibility and Unlimited Selection

Ball screw diameter and lead sizes are offered in both imperial and metric sizes. We manufacture ball screw diameters from 5/8” to 6” and specialize in long screws (the longest to date was 67 feet)

7) High Quality

Ensure the highest quality for your company: Our facility is ISO 9001:2015 certified

8) Full Customization

Your ball screw will be configured with the options you specify, and can be further customized for a complete solution that is quick and easy to install, saving you time and money. Options:

  • Ball nut style/configuration (single or double nut, 2-piece flange to flange nut, middle flange nut)
  • Internal or external ball returns
  • Wipers and end seals
  • Custom journal ends
  • Custom housing and mounting blocks

Ball Screw Repair & Rebuild

Have you thought about repairing your ball screws? Dynatect can also repair and rebuild your precision ball screw assembly. Assess potential cost savings using our Ball Screw Scenario Savings Calculator. 

A rebuild often consists of a screw regrind with a new ball nut. When a ball screw is sent in for repair evaluation, it is sometimes found that the ball screw cannot be reloaded due to pitting, brinelling, and/or damage to interior or exterior of unit. In that case, the unit could be refurbished by manufacturing a new ball nut and regrinding the existing screw to remove pitting and taper. This type of rebuild comes with a warranty.