... -locking,Heavy duty,Uniform lifting speed,small sizes,easy installation. 1.Model: RN-0.5T,1T,2T,3T,5T,10T,15T ... Loading: 0.5 ton ~ 100 ton Reduction ratio: 7.5:1~100:17.Input Horsepower Ranges: 8.Lifting Screw Diameters: 9 ... , Chemical industry, Health Care, Culture, Health and Others Industries Jwss11-S-R Worm Gear Linear Actuator