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How do I calculate linear travel speed of a screw jack?

April 26, 2017CALCULATE Jack linear screw speed Travel

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How do I calculate linear travel speed of a screw jack?

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Each screw jack has an inherent number of input shaft turns per inch (TPI) of screw travel. TPI is simply the result of the jack’s gear ratio divided by screw lead. The TPI can be found on the jack specification pages at the beginning of each jack section. When the input RPM is divided by the TPI, the result is the linear speed of travel in inches per minute. Example: A model WJT 242 has a TPI of 96, if 350 RPM is applied to the input shaft, the resultant linear speed is (350/96) or 3.65 inches per minute.