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. → View our capabilities. 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.
Expediting new ball screw assemblies in 2 weeks! Machine down? Emergency ball screw repair in as little as 24 hours!
Ultimate Design Flexibility and Optimization – Dynatect offers complete options to provide the best balance of price, size, up-time, and performance for an application. Dynatect can now provide twice as many varieties of long lead applications where lead is greater than 50% of the screw diameter.
“Zero Lost Motion” Solutions – We customize your design to minimize backlash and eliminate deadband.
Superior Wiper Technology – Dynatect’s unique wiper design results in a greater wiping surface and better sealing than traditional wipers.
Best Lead Times in the Industry.
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.
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.
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 57 feet).
High Quality –Ensure the highest quality for your company: Our facility is ISO 9001:2015 certified.
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)
Check out this video via Design World, sponsored by Dynatect.
Excerpt from the video:
A ball screw is a mechanical device that translates rotational motion to linear motion. The basic components of a ball screw are a nut and a screw with helical grooves, and balls. The balls roll between the nut, the screw and the grooves when either the screw or nut rotates. Balls are routed into a ball return system of the nut and travel in a continuous path from their starting point to the end, and then back to their starting point. Wipers are often used on either side of the nut to prevent debris from compromising the life of the ball screw assembly.
Why use a precision ball screw?
Precision ground ball screws are favored for a high degree of travel accuracy, which is expressed by lead error. Lead error refers to the measured lead minus the specified lead (deviation)
High precision is usually required for applications where the dimensional tolerances of the part being produced are critical or need to be highly repeatable. Examples of these types of applications are typically found in machining operations, including but not limited to, metal cutting and grinding.
Precision ground ball screws may not be required for simple “transport” tasks where high accuracy repeatability is not critical and additional systems are in place for controlling motion. Examples of these types of applications are typically found in material handling and automated transport lines.
Dynatect manufactures high-precision ball screws up to ANSI Class 2 specification.
Ball Return Designs
Ball Return Designs
End Cap Return – Single circuit with multiple turns. Best for long lead applications where lead is greater than 50% of the screw diameter. Offers reduced wear thanks to proprietary fingerless pickup design that eliminates the common end-cap wear point and allows for refurbishing.
Smooth operation and low noise – balls spend less time traveling unloaded
Ease of installation – components protected by design means low risk of damage during installation
Up to 25% Lower cost: Proprietary blind lead on screw results in fewer threads needed for loading nut on ball screw
Eliminate external tubes which are susceptible to damage, premature wear, speed limitations, noise and increased package size.
New: End-Cap Return
Dynatect can now provide twice as many varieties of long lead applications where lead is greater than 50%
of the screw diameter. Dynatect’s diverse capabilities help balance price, size, uptime, and performance for
Double load capacity, increase life by adding multiple starts while maintaining the same package size
Reduced wear: Patented fingerless pickup eliminates the common end-cap wear point and allows for refurbishing
Up to 25% lower cost: Proprietary blind lead on screw results in fewer threads needed for loading nut on ball screw
Customizable end cap returns provide application flexibility not found in standard catalog offerings
Eliminate external tubes which are susceptible to damage, premature wear, speed limitations, noise, and increased package size.
Dynatect can also repair and rebuild your precision ball screw assembly. Learn more.
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, brinneling, 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.