electric screw jack lift

Electric Screw Jack Lift: An In-depth Guide

screw jack

1. Introduction

Electric screw jack lifts are innovative devices used in various industries for lifting heavy loads. This comprehensive guide will delve into the intricacies of electric screw jack lifts, their applications, working principles, and the differences compared to hydraulic jacks. Additionally, we will explore the parameters and considerations for selecting or customizing the ideal screw jack for your specific requirements.

2. What is a screw jack used for?

Screw jacks are versatile lifting mechanisms used to raise or lower heavy loads in industries such as construction, manufacturing, and transportation. The image below showcases a screw jack in action:

screw jack

2.1 Load Lifting

Screw jacks are primarily employed for lifting heavy loads, allowing operators to perform tasks such as equipment positioning, assembly line adjustments, and material handling.

2.2 Height Adjustment

By utilizing the precise thread pitch of the screw, screw jacks enable height adjustments in applications where stability and accuracy are crucial, such as stage setups and industrial machinery.

2.3 Load Balancing

Screw jacks aid in load distribution and balancing, ensuring even weight distribution across multiple supports and reducing stress concentration on individual components.

2.4 Stabilization

These jacks can stabilize structures, providing support against dynamic loads, vibrations, or uneven surfaces. They find applications in vehicle maintenance, construction, and architectural adjustments.

2.5 Positioning and Alignment

Screw jacks offer precise positioning and alignment capabilities, facilitating accurate movement and adjustment of heavy machinery during production processes or assembly line operations.

screw jack

3. What is the working principle of screw jack?

The working principle of a screw jack involves the conversion of rotary motion into linear motion. This process is achieved through the interaction of a motor or manual input with a threaded shaft and a nut. The following points elaborate on this principle:

3.1 Rotational Input

In a screw jack, a motor or manual effort is applied to rotate the input shaft.

3.2 Threaded Shaft

The rotational motion of the input shaft is transmitted to a threaded shaft, which possesses a precisely engineered thread profile.

3.3 Nut

The threaded shaft engages with a nut, which is typically integrated with the load-bearing platform or lifting mechanism. As the threaded shaft rotates, the nut moves linearly along the shaft.

3.4 Lifting Mechanism

The linear movement of the nut raises or lowers the load, achieving the desired lifting action of the screw jack.

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

While both screw jacks and hydraulic jacks are used for lifting heavy loads, they differ in terms of operating principles and application scenarios. The table below highlights the key differences:

Screw Jack Hydraulic Jack
Relies on threaded rod and nut mechanism for linear motion Utilizes hydraulic fluid and a piston to generate force
Offers precise positioning and load holding capabilities Provides higher load capacities and rapid lifting speed
Ideal for static or slow-speed applications Suitable for dynamic and high-speed operations
Requires minimal maintenance Demands periodic fluid checks and maintenance
Commonly used in applications requiring stability and accuracy Frequently employed in heavy-duty construction and automotive industries

5. Choosing and Customizing the Right Screw Jack

screw jack

5.1 Load Capacity

The load capacity of the screw jack must match or exceed the weight of the load it will be lifting or supporting.

5.2 Travel Distance

Consider the required vertical travel distance to ensure the screw jack can accommodate the desired movement.

5.3 Speed and Efficiency

Evaluate the speed and efficiency requirements of your application, as screw jacks have varying lifting speeds and mechanical efficiencies.

5.4 Environmental Factors

Account for environmental conditions such as temperature, dust, moisture, and corrosive substances as they can impact the longevity and performance of the screw jack.

5.5 Mounting Options

Assess the available space and mounting requirements to select the appropriate screw jack configuration, such as upright, inverted, or multi-jack systems.

HZPT: Your Trusted Screw Jack Manufacturer

As a leading manufacturer of industrial electric motors, gear reducers, and drives in China, HZPT adheres to the philosophy of “Leading Technological Innovation, Achieving Excellent Quality.” Our range of products includes:

  • Micro Gear Motors
  • Medium Gear Motors
  • Brake Adjustable-Speed Motors
  • Torque Motors
  • DC Motors
  • NMRV Worm Gear Motors
  • Bevel Gear Motors
  • WPRV Worm Gear Reducers
  • Rigid Tooth Face Bevel Gear Reducers
  • Helical Gear Worm Gear Reducers
  • Parallel Shaft Helical Gear Reducers
  • Spiral Bevel Gear Reducers
  • Worm Screw Lifts
  • Rigid Tooth Face Gear Reducers
  • Planetary Gear Reducers

Our transmission products are widely applied in various industrial production lines, including transportation machinery, food machinery, medical machinery, printing machinery, textile machinery, packaging machinery, office equipment, and instrumentation. HZPT is your preferred partner for automation equipment.

When choosing HZPT as your screw jack supplier, you benefit from:

  1. High Load Capacity: Our screw jacks offer robust load-bearing capabilities, ensuring reliable lifting operations.
  2. Enhanced Durability: Built with superior materials and precision engineering, our screw jacks are durable and resistant to wear and tear.
  3. Precision and Control: Our screw jacks provide precise positioning and load holding, allowing for accurate adjustments and operations.
  4. Customization Options: We offer customization services to tailor the screw jack to your specific requirements, ensuring optimal performance and compatibility.
  5. Responsive Support: Our dedicated customer support team is always ready to assist you with any inquiries or technical assistance you may require.

Partner with HZPT for exceptional screw jack solutions that elevate your operations and deliver reliable lifting performance.


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.