table screw jack

Table Screw Jack: A Comprehensive Guide

screw jack


A table screw jack is a versatile mechanical device used in various industries for lifting and positioning heavy loads. It consists of a threaded shaft (screw) and a supporting mechanism (jack) that converts rotational motion into linear motion. In this article, we will explore the different aspects of table screw jacks and their applications.

1. What is a screw jack used for?

screw jack

– Industrial Automation: Screw jacks are widely used in automated systems for precise positioning and lifting of heavy machinery.
– Material Handling: They play a crucial role in material handling applications such as loading docks, assembly lines, and conveyor systems.
– Stage and Theater Technology: Screw jacks are utilized in stage setups to lift platforms, scenery, and lighting equipment.
– Construction and Infrastructure: They are indispensable tools in construction projects for lifting structures, bridges, and heavy components.
– Automotive and Aerospace: Screw jacks are employed in the automotive and aerospace industries for various tasks like lifting vehicles and adjusting wing flaps.

2. What is the working principle of screw jack?

screw jack

The working principle of a screw jack is based on the fundamental concept of a threaded shaft (screw) moving through a fixed nut (jack). When rotational force is applied to the screw, it moves linearly, thereby lifting or lowering the load. The mechanical advantage and pitch of the screw determine the lifting capacity and speed of the jack. Screw jacks can be operated manually or powered by electric, hydraulic, or pneumatic systems.

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

Screw jacks and hydraulic jacks are both used for lifting heavy loads, but they differ in their operational principles:

– Screw Jacks: As mentioned earlier, they use a threaded screw mechanism to provide linear motion. They are more suitable for slow and precise applications due to their mechanical nature.
– Hydraulic Jacks: Hydraulic jacks rely on fluid pressure to generate force. They are capable of lifting heavier loads at a faster rate than screw jacks. Hydraulic jacks are commonly used in automotive repair shops and industrial settings.

4. How to choose or customize the right screw jack?

screw jack

When selecting or customizing a screw jack, several parameters and practical considerations should be taken into account:

– Load Capacity: Determine the maximum weight the jack needs to handle to ensure it can safely lift the intended load.
– Travel Length: Consider the required vertical travel distance or stroke length of the jack for your specific application.
– Speed and Efficiency: Evaluate the desired lifting speed and efficiency to choose the appropriate gear ratio and motor configuration.
– Environmental Conditions: Take into consideration factors such as temperature, humidity, and exposure to corrosive substances to select suitable materials and coatings.
– Safety Features: Ensure the jack has safety mechanisms like limit switches, overload protection, and emergency stop buttons to prevent accidents.

About HZPT

As a leading manufacturer of industrial motors, gearboxes, and drivers in China, HZPT is committed to technological innovation and excellent quality. Our product range includes:

– Micro Gear Motors
– Medium Gear Motors
– Brake Speed Control Motors
– Torque Motors
– DC Motors
– NMRV Worm Gear Motor
– Spiral Bevel Gear Motor
– WPRV Worm Gear Reducer
– Rigid Tooth Face Spiral Bevel Gear Reducer
– Spiral Bevel Gear Worm Gear Reducer
– Parallel Shaft Bevel Gear Reducer
– Helical Bevel Gear Reducer
– Worm Screw Elevator
– Rigid Tooth Face Gear Reducer
– Planetary Gear Reducer

These transmission products find extensive applications in various industries such as transportation machinery, food machinery, medical machinery, printing machinery, textile machinery, packaging machinery, office equipment, and instruments. They are the preferred choice for automation equipment.

We specialize in manufacturing and selling screw jacks that meet the highest quality standards. Here are five reasons to choose our products and collaborate with us:

1. Superior Quality: Our screw jacks are made from premium materials and undergo rigorous quality control measures to ensure durability and reliability.
2. Customization Options: We offer a wide range of customization options to tailor the screw jacks to your specific requirements and applications.
3. Advanced Technology: Our screw jacks incorporate cutting-edge technology and innovative features to enhance performance and efficiency.
4. Expertise and Experience: With years of industry experience, we have the knowledge and expertise to provide technical support and guidance.
5. Excellent Customer Service: We prioritize customer satisfaction and strive to provide exceptional service, including prompt responses and efficient order processing.

Partner with HZPT for all your screw jack needs and experience the difference in quality and performance. Contact us today to discuss your requirements and let our team assist you in finding the perfect solution.


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.