building screw jacks

Building Screw Jacks


Screw jacks are mechanical devices commonly used in various industries for lifting heavy loads or applying force in a controlled manner. They consist of a threaded screw mechanism and a load-bearing platform, offering a versatile solution for vertical lifting and positioning applications.

What is a screw jack used for?

1. Lifting and leveling structures: Screw jacks are widely employed in construction projects to lift and support structures during foundation work or repairs.

2. Industrial machinery: These jacks are utilized in heavy machinery such as presses, injection molding machines, and assembly lines to control precise movements and adjust the positions of components.

3. Stage and theater equipment: Screw jacks provide a reliable and adjustable support system for stage platforms, lighting rigs, and other theatrical equipment.

4. Automotive applications: Screw jacks play a crucial role in car lifts, allowing mechanics to elevate vehicles for maintenance, repairs, or inspections.

5. Material handling: They are used in warehouses, loading docks, and logistics facilities to raise and lower heavy loads, such as pallets, crates, or machinery.

screw jack

What is the working principle of screw jack?

The working principle of a screw jack is based on the interaction between a rotating screw and a nut. When the screw is rotated, it moves linearly through the nut, causing the load-bearing platform to move vertically. The rotational force applied to the screw is converted into linear motion, allowing precise control over lifting or lowering operations.

screw jack

What is the difference between a screw jack and a hydraulic jack?

1. Power source: Screw jacks are typically powered manually by rotating the screw, while hydraulic jacks use hydraulic fluid and a pump.

2. Load capacity: Screw jacks can handle higher loads compared to hydraulic jacks, making them suitable for heavy-duty applications.

3. Speed and efficiency: Hydraulic jacks offer faster lifting speeds and are generally more efficient in transferring force.

4. Maintenance: Screw jacks require less regular maintenance and are more resistant to environmental factors, while hydraulic jacks may require periodic fluid checks and seal replacements.

5. Precision and control: Screw jacks provide better control and accuracy in vertical positioning due to their precise screw thread mechanism.

Choosing and customizing the right screw jack

When selecting or customizing a screw jack for your specific application, several parameters should be taken into consideration:

1. Load capacity: Determine the maximum weight the jack needs to support.

2. Stroke length: Define the required vertical travel distance of the load-bearing platform.

3. Screw diameter and pitch: Choose the appropriate screw size and pitch to match the desired lifting speed and load capacity.

4. Operating environment: Consider factors such as temperature, dust, moisture, and corrosion resistance when selecting suitable materials and protective coatings.

5. Safety features: Evaluate the need for additional safety mechanisms like limit switches, overload protection, or emergency stop systems.

screw jack

As a leading manufacturer of industrial motors, gearboxes, and drives in China, HZPT adheres to the philosophy of “leading technological innovation and achieving excellent quality.” Our extensive range of products includes:

– Micro gear motors

– Medium-sized gear motors

– Brake adjustable-speed motors

– Torque motors

– DC motors

– NMRV worm gear motors

– Bevel helical gear motors

– WPRV worm gear reducers

– Rigid tooth surface helical gear reducers

– Helical-worm gear reducers

– Parallel shaft helical gear reducers

– Spiral bevel gear reducers

– Worm screw lifts

– Rigid tooth surface gear reducers

– Planetary gear reducers

Our transmission products find wide applications in various industrial production lines such as transportation machinery, food machinery, medical machinery, printing machinery, textile machinery, packaging machinery, office equipment, and instruments. They are the preferred choice for automated equipment.

Why choose HZPT Screw Jacks?

1. Robust construction: Our screw jacks are built to withstand heavy loads and harsh working conditions, ensuring durability and long service life.

2. Precise positioning: The precision screw thread mechanism allows for accurate and controlled vertical movement, providing precise positioning capabilities.

3. Customization options: We offer a wide range of options for load capacity, stroke length, screw size, and other parameters to meet specific requirements.

4. Safety features: Our screw jacks can be equipped with various safety devices, ensuring operator safety and preventing accidents.

5. Excellent customer support: We provide professional technical assistance, timely delivery, and reliable after-sales service to ensure customer satisfaction.

Contact us today to learn more about our high-quality screw jacks and discuss how we can meet your specific lifting and positioning needs.


Find us

Ep Screw Jack Co., Ltd.

Mail: [email protected]

As one of leading manufacturers, suppliers and exporters of mechanical products in China, We offer reducers, sprockets, industrial and conveyor chain, belts, pulleys, gears, racks, gearboxes, motors, PTO Shafts, taper lock Bushing, vacuum Pumps, screw air compressors and many other products. Please contact us for details.