... tons 3. Self-lock trapezoidal screws RN-Series Translating Screw Jack Features: ModelRN-0.5T, 1T, 2T, 3T, ... Pillow Block Bearing, Counter, Bevel Gearbox, Swivel Plate etc.RN-Series Translating Screw Jack Material: Lifting Screwsteel C45 (optional: stainless ... /low temperature oil sealing) RN-Series Translating Screw Jack Certification: RN-Series Thanslating Screw Jack Package: RN-Series Translating ...