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    Mechanical Screw Jack 20 ton

    Cheap 20 ton screw jack is designed for efficiently and safely lift the load. It is a mechanical screw jack wtih 325mm minimum height and 180mm lifting height, sufficient capacity, light and flexible, and large jacking force, widely used in manufacturing, construction, material handling and other industries.
    SKU: ATO-SJ-20T
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Factory price mechanical screw jack for sale online. 20 ton adjustable screw jack can lift loads efficiently and safely, provide 325mm minimum height and 180mm lifting height, ideal for building support, bridge construction, railway construction, and material handling. 


    • Model: ATO-HT8432-20T
    • Capacity (Load): 20 ton
    • Jack Length: 325mm
    • Total Length: 505mm
    • Minimum Altitude: 325mm
    • Lifting Height: 180mm
    • Weight: 11kg
    • Package Size: 600x350x200mm


    • An integrated body ensures the stability of the body.
    • The position of the red line is the maximum jacking height. Please do not jack up again.
    • Multi-layer primer baking, not easy to take off the paint, effective corrosion resistance, not easy to rust.
    • This screw jack is not suitable for automotive use.
    • It cannot be overloaded, please keep the thread clean and lubricated.
    • The screw jack is only suitable for jacking and cannot be used as a long-term support tool.


    Mechanical screw jack details

    Use Methods

    Mechanical screw jack use methods

    Tips for Using a Screw Jack

    1. Before lifting a heavy object, pay attention to the position of the Jack so that it remains vertical to prevent the screw from bending and causing accidents.
    2. When loading, force should be used to shake the handle evenly, so as to avoid accidents and damage to Jack caused by up-and-down impact.
    3. When in use, care should be taken not to exceed the maximum load-carrying capacity allowed to prevent accidents caused by overloading.
    4. When in use, the lifting height shall not exceed the marking line on the sleeve or piston, and for the Jack without the marking line, the lifting height shall not exceed 3/ 4 of the total height of the screw clasp or oil plug, so as not to remove the sleeve or piston top, Damage the Jack and cause an accident.
    5. Before loosening the Jack to make a heavy object land, it is necessary to check beforehand whether the heavy object has been supported firmly and then release it slowly so as to ensure safety.
    6. Butter shall be used for lubrication during storage to prevent excessive wear and reduce service life.


    A screw jack, also known as a mechanical screw jack, is a device that is used to lift heavy loads vertically by converting rotational motion into linear motion, widely used in a variety of applications where heavy loads need to be lifted, such as in building support, bridge construction, and material handling. 

    Mechanical screw jack applications

    Tips: Screw Jacks vs. Hydraulic Jacks

    Screw jacks and hydraulic jacks are both commonly used for lifting heavy loads, but they differ in several key ways:

    • Load capacity: Screw jacks can generally support heavier loads than hydraulic jacks due to their stronger construction and ability to handle larger amounts of weight.
    • Precision: Screw jacks provide more precise positioning of the load because the screw thread allows minor adjustments to be made easily. Hydraulic jacks, on the other hand, can be more difficult to position precisely due to the fluid nature of the hydraulic system.
    • Efficiency: Screw jacks are highly efficient because the screw thread provides a mechanical advantage that allows for easy lifting of heavy loads with minimal effort. Hydraulic jacks require more energy to lift heavy loads because the hydraulic fluid must be pressurized to provide the necessary force.
    • Maintenance: Screw jacks require very little maintenance, which reduces downtime and increases productivity. Hydraulic jacks require more maintenance, including regular checks of the hydraulic fluid level and periodic replacement of the fluid.
    • Safety: Screw jacks are generally safer than hydraulic jacks because they do not require hydraulic fluid, which can be hazardous if it leaks.

    Overall, both screw jacks and hydraulic jacks have their advantages and disadvantages, and the choice between them will depend on the specific needs of the application. Screw jacks are generally preferred for heavy-duty lifting applications that require precise positioning, while hydraulic jacks are often used for applications where speed and ease of use are more important.

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