SpecialHybrid Acme style nut and screw design, no brake needed.SpecialSpecialSpecificationsSpecificationsValueAnti-rotationNoBrakeno (self Locking)MaterialCopper; Steel; Zinc; Aluminum; PlasticScrew TypeAcmeTemperature Max150 °FTemperature Min-20 °FUPC Number883680570250Voltage115 VacWeight22 lbDimensionsDimensionValue[A]18.32 in[S]12 inPerformancePerformanceValueDuty Cyle25 %Load, Static, Max3000 lbf