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        • * Model: RNK-20T
        • * Screw Diam: 50 mm
        • * Screw Pitch: 10 mm
        • * Static Load: max 7 tons
        • * Dynamic Load: max 2.8 tons
        • * Speed Ratio: 1/8 1/16 1/32
        • * Lifting Speed: 75-1500 mm/min
        • * Input Power: 0.92-3.24 hp
        • * Max Input: 1500 rpm
        • * Screw Type: ball screw
        • * Stroke Range: max 1500 mm
        • * Top End: top plate, clevis end, threaded end, plain end
        • * Power Source: electric, manual, both

        model diam. gear ratio 1800RPM 1500RPM 1200RPM 900RPM 600RPM 300RPM
        pitch input (HP) work
        load(kg)
        lifting speed (mm/min) input (HP) work load (kg) lifting speed input (HP) work load (kg) lifting speed input (HP) work load (kg) lifting speed input (HP) work load (kg) lifting speed input (HP) work load (kg) lifting speed
        RNK-20T 50mm
        P=10
         1/10 3.57 466 1800 3.24 483 1500 3.01 650 1200 2.84 816 900 2.59 1116 600 1.89 1633 300
         1/20 1.9 533 900 1.97 483 750 1.84 750 600 1.72 933 450 1.58 1283 300 1.15 1866 150
         1/40 1.53 800 450 1.57 650 375 1.46 1116 300 1.44 1466 225 1.25 1916 150 0.92 2800 75

        Installation & Spindle Screw Type

        Translating screw: A driven worm shaft acts on an internal worm gear, which in turn drives a lifting screw to extend or retract. As the lifting screw translates through cast iron housing, then worm gear and lifting screw rotate together. When the lifting screw is held to prevent rotation, the lifting screw will move linearly through the cast iron housing to move the load.
        Keyed screw: Some loads don’t prevent lifting screw rotation. These applications require a keyed screw jack. A key, fixed to the jack housing and inserted into a keyway milled into the lifting screw, forces the lifting screw to translate without rotating.
        Rotating screw: A lifting screw keyed to the worm gear as a single unit, forcing the lifting screw to rotate,but not translate. A traveling nut, attached to the load, is driven by the rotation of the lifting screw. This type jack is ideal for applications that can not accommodate a screw protective tube and save enough mounting space.

        1/10, fast speed, 1 turn 1 mm travel
        1/20, mid speed, 1 turn 0.5 mm travel
        1/40, low speed, 1 turn 0.25 mm travel
        About the relationship of gear ratio, load capacities, input power, input torque and input rpm, please return RNK-20T model.

        300: 300 mm travel stroke

        Accessories:
        N: Standard Jack,No additional accessories
        P: Steel Cover
        R: Rubber Bellow
        Y: Hand Wheel
        Other accessories,please check below picture