electric screw jack

Electric Screw Jack: The Ultimate Guide

screw jack


In the world of mechanical systems, the electric screw jack plays a crucial role. This versatile device offers precise and powerful lifting capabilities, making it an essential component in various industries. In this comprehensive guide, we will delve into the details of the electric screw jack, exploring its purpose, working principle, differences from hydraulic jacks, and how to choose the right one for your specific needs. Join us on this journey as we uncover the intricacies of this remarkable engineering marvel.

What is a Screw Jack Used For?

screw jack

1. Lifting Heavy Loads with Precision

The primary purpose of a screw jack is to lift heavy loads with exceptional precision. Its robust design, consisting of a screw mechanism and a motor, enables controlled vertical movement, making it ideal for applications that require accurate positioning and adjustment of heavy objects.

2. Load Holding and Locking

Screw jacks are also capable of holding and locking loads in position. Once the desired height is achieved, the self-locking feature ensures that the load remains secure, providing stability and safety in various industrial scenarios.

3. Load Transfer and Positioning

With its ability to transfer and position heavy objects, the screw jack proves invaluable in industries such as manufacturing, construction, and automotive. Whether it’s aligning components, adjusting machinery, or supporting structures, this device offers unparalleled versatility and reliability.

4. Mechanical Actuation

Screw jacks are widely used for mechanical actuation in different systems. From conveyor belt tensioning to valve operation, this device provides the necessary force to drive mechanical components, ensuring smooth and efficient operation.

5. Height Adjustment and Leveling

In applications that require height adjustment and leveling, the electric screw jack excels. Whether it’s setting up stages, aligning platforms, or adjusting workstations, this device offers precise control over vertical movement, allowing for seamless customization and adaptation to varying requirements.

What is the Working Principle of Screw Jack?

screw jack

1. Screw Mechanism

The working principle of a screw jack revolves around a screw mechanism. It consists of a rotating screw and a nut that moves along its threads. As the screw rotates, the nut translates in a linear fashion, resulting in vertical motion. This motion is harnessed to lift or lower heavy loads with precision.

2. Electric Motor

At the heart of every electric screw jack lies an electric motor. The motor provides the necessary torque to rotate the screw, converting electrical energy into mechanical power. The motor’s speed and power determine the lifting capacity and speed of the screw jack, making it a critical component in its operation.

3. Gearbox

To increase torque and control the speed of the screw, a gearbox is often incorporated into the screw jack design. The gearbox amplifies the motor’s rotational force, allowing for efficient and controlled lifting operations. Different gear ratios can be selected to match the specific requirements of each application.

4. Self-Locking Mechanism

To ensure load stability and prevent unwanted lowering, screw jacks utilize a self-locking mechanism. This mechanism engages when the motor is not actively rotating, holding the load securely in place. This safety feature is crucial in maintaining the desired position and preventing accidental movement or potential hazards.

What is the Difference Between a Screw Jack and a Hydraulic Jack?

While both screw jacks and hydraulic jacks serve the purpose of lifting heavy loads, they operate on different principles and offer distinct advantages. Here are some key differences:

Screw Jack

  • Operates using a screw mechanism
  • Provides precise positioning and control
  • Self-locking capability for load holding
  • Requires less maintenance
  • Offers versatility in different applications

Hydraulic Jack

  • Utilizes hydraulic fluid and a piston mechanism
  • Offers high lifting capacity
  • Allows for rapid lifting and lowering
  • Requires regular fluid maintenance
  • Ideal for heavy-duty lifting in industrial settings

How to Choose or Customize the Right Screw Jack?

screw jack

Choosing or customizing the right screw jack for your specific needs requires careful consideration of various parameters and real-life conditions. Here are some factors to keep in mind:

1. Load Capacity

Determine the maximum weight your application requires the screw jack to lift. Consider both static and dynamic loads to ensure the selected screw jack can handle the necessary weight without compromising safety or performance.

2. Speed Requirement

Consider the desired speed of lifting or lowering the load. Different screw jacks offer varying lifting speeds, allowing you to choose a model that aligns with your application’s specific speed requirements.

3. Travel Length

Evaluate the vertical travel length needed for your application. Some screw jacks can extend to greater heights, while others are more suitable for shorter distances. Ensure the selected screw jack meets your required travel length to achieve the desired functionality.

4. Environment Conditions

Assess the environmental conditions in which the screw jack will operate. Factors such as temperature, humidity, and exposure to chemicals or dust may impact the choice of materials and additional protective measures needed for the screw jack’s longevity and performance.

5. Mounting and Integration

Consider the mounting and integration requirements of the screw jack within your application. Ensure compatibility with existing systems or the ability to incorporate necessary modifications for seamless integration, allowing for efficient and effective operation.

About HZPT: Your Leading Screw Jack Manufacturer

HZPT is a renowned manufacturer and supplier of top-quality industrial electric motors, gear reducers, and drive systems in China. With a commitment to technological innovation and excellence, we offer a wide range of products tailored to meet your specific needs. Our product portfolio includes:

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

We cater to a wide range of industries, including transportation, food processing, medical, printing, textile, packaging, office equipment, and instrumentation, offering best-in-class transmission products. At HZPT, our commitment to delivering unmatched performance and reliable automation solutions makes us the preferred choice for your screw jack needs.

Here are five key advantages of choosing HZPT as your screw jack manufacturer:

1. Technological Innovation

At HZPT, we lead the industry with our continuous focus on technological innovation. Our products incorporate the latest advancements, ensuring optimal performance, efficiency, and reliability for your applications.

2. Superior Quality

We take pride in our commitment to excellence. Our screw jacks undergo rigorous quality control checks to maintain the highest standards. With HZPT products, you can expect exceptional quality and durability.

3. Customization Options

We understand that each application has unique requirements. That’s why we offer customization options to tailor our screw jacks to your specific needs. Our team of experts will work closely with you to design a solution that perfectly fits your application.

4. Extensive Product Range

With our diverse product range, you can find the perfect screw jack for your application. Whether you need micro-sized jacks or heavy-duty lifting devices, we have a comprehensive selection to meet your demands.

5. Industry Expertise

With years of experience in the industry, we possess the knowledge and expertise to provide unparalleled support and guidance. Our team will assist you in choosing the right screw jack and offer technical assistance throughout the entire process, ensuring a seamless experience.

Partner with HZPT, and experience the reliability, precision, and efficiency that our screw jacks bring to your industrial operations. Contact us today to discuss your requirements and embark on a successful partnership.


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.