Universal Thread Grinding Company, located in Fairfield, CT, USA, offers high-quality lead screw assemblies for precision linear positioning applications. Universal Thread was founded in 1946 to meet the needs of regional manufacturers by providing a wide range of customized thread grinding services. Development of expertise in manufacturing precision lead threads guided the evolution of our current product lines of precision lead screw and nut assemblies. For more than 40 years the Universal lead screw assembly has been used worldwide, meeting the most demanding requirements.
Services
A flexible antibacklash coupling is needed between the drive motor and lead screw to isolate the motor bearing errors from the lead screw bearing. Metal bellows type couplings have been used successfully. Split clamps are recommended to prevent loosening by motor torque. The lead nut requires proper lubrication for peak performance and longevity of the Universal lead screw assembly.
Nonstandard leads can also be supplied. We supply lead screw assemblies in custom and one-of-a-kind configurations to the same accuracies as our standard products. We can help you design and specify the lead screw configuration you need, and manufacture it in single or production quantities. Contact us for more information.
Universal Thread employs strict quality control measures to ensure that our lead screw assemblies maintain industry-leading precision. We provide you with complete traceability of our products, from original manufacture to delivery of the finished product to archiving. Serial number, lead, and accuracy etched into lead screw and nut with a laser marking machine.
Universal's lead screw assemblies, with lead accuracies to 10 microinches per turn and 25 microinches per inch, eliminate the "once around" banding problems common in high-performance color scanners, printers, and recorders. Graphic arts equipment designers define "banding" as the stripes which can occur on an image, perpendicular to the travel of the lead screw drive, with a spacing equal to the lead of the lead screw. These stripes, simulated in Figure 1, are caused by nonlinearity of the lead screw thread helix.
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