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Our U.S. manufacturing operations are located in Wisconsin, Indiana, Michigan, California.
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Repair & Replacement
When you need a ball screw, we will walk you through the specification process. In this article, you will find some basic design information, terms explained, and helpful diagrams.
Critical speed is the angular velocity at which the screw (or nut) develops severe vibrations. Regardless of mounting orientation, a ball screw assembly must operate below its critical speed to avoid vibration, noise and possible failure. The magnitude and location of the shaft unbalance, the length of the shaft, shaft diameter, and the type of bearing support are factors which affect critical speed.
The useful life of a ball screw assembly, usually given in terms of one million inches of travel. The operational load rating is a major determinate of ball screw life. Every application is unique; duty cycle and environment also have an effect. Customers are encouraged to consult with our engineering staff to discuss the specific requirements of their applications.
The amount of load to be moved is used to select the proper screw size.
Lead error refers to the error in lead length per turn, compared to the basic lead specified. We manufacture ground ball screws up to ANSI Class 2 or DIN/JIS Class 1 specification.
The following chart indicates the relationship between various design specifications and operation parameters.
Ball Screw Mounting Styles: Four standard mounting styles are available. Fixed ends offer the highest column load support and the highest resistance to vibration.
Fixed-Free
Fixed-Support
Support-Support
Fixed-Fixed
Ball Nut Styles: For standard ball nut styles are available. Internal and external returns can be applied to all styles.
Single Nut (1 piece)
Middle Flange Nut (1 piece)
Double Nut (2 pieces)
Flange to Flange Nut (2 pieces)
Your ball screw will be configured with the options you specify, and can be further customized for a complete turn-key solution that is quick and easy to install, saving you time and money.
Customization Options