Kerk Motion Products offers new series with low drag torque

Kerk Motion Products offers its VHD series, ideal for eliminating drag and wear associated with high pre-load forces.  The Kerk VHD Series anti-backlash assembly provides the maximum load-carrying capability and the highest axial and radial stiffness of any Kerk nut assembly.  The standard VHD assembly is recommended for dynamic loads up to 350 lbs/1.5 kN.
Designed for smooth, quiet operation and long life, the VHD assembly provides low drag torque by making use of the patented Kerk AXIAL TAKE-UP MECHANISM, creating a stiff spacer which will continually expand to accommodate the wear which occurs during use.
The self-lubricating Kerk VHD Series is also instrumental in vibration and noise reduction challenges, as encountered in the semiconductor industry.  Since there are no recirculating balls and Kerk’s thread forms are exceptionally uniform, the nuts move smoothly, with very low friction.  And particle generation has been shown to be lower than ball screws.
Accuracy, reliability, and load rating make the Kerk VHD Series a popular replacement for ball screws.  Available leads from 1.27mm/.050” to 92mm/3.6” and lengths up to 4m/160” cover a range unmatched by ball screws.  VHD Series Screws are 303 stainless steel, with Kerk's custom Kerkote® TFE extended life coating optional.  Assemblies are available cut-to-length or with screws machined to your requirements.
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