4 ton screw jack

4 Ton Screw Jack


Welcome to our blog post about the 4 ton screw jack! In this article, we will explore the features, applications, and working principles of this innovative mechanical device. Whether you are a mechanical engineer, industrial worker, or simply curious about the world of machinery, this article will provide you with valuable insights. So, let’s dive in!

What is a Screw Jack Used For?

A screw jack is a mechanical device primarily used for lifting heavy loads or applying great force in a controlled manner. Its versatile design allows it to be employed in various industries and applications. Let’s explore some of the key uses of a screw jack:

  1. Industrial Machinery: Screw jacks play a crucial role in assembly lines, conveyor systems, and other machinery where precise positioning and lifting of heavy loads are required. They ensure stability and safety during operations.
  2. Construction: In the construction industry, screw jacks are used for temporary support or leveling of structures. They provide a stable and adjustable platform for heavy equipment and scaffolding.
  3. Automotive: Screw jacks are utilized in automotive maintenance and repair shops for lifting vehicles, supporting engine components, or adjusting alignment.
  4. Stage and Theater: In the entertainment industry, screw jacks are commonly used for raising and lowering stage platforms, lighting fixtures, and props. They enable smooth and controlled movements during performances.
  5. Shipbuilding: Screw jacks are essential tools in shipyards for assembling, positioning, and aligning large ship components. They ensure precise and safe handling of heavy ship parts.

screw jack

What is the Working Principle of Screw Jack?

The working principle of a screw jack is based on the concept of a screw and a nut. By rotating the screw using a handle or motor, the lifting nut moves along the screw, converting the rotary motion into linear motion. This linear motion allows the screw jack to raise or lower heavy loads with great precision and control.

Key aspects of the working principle include:

  • Screw Thread: The screw features a precise and standardized thread profile, which engages with the lifting nut.
  • Lifting Nut: The lifting nut moves along the screw, converting rotary motion into linear motion.
  • Worm Gear: In some screw jacks, a worm gear mechanism is employed to amplify the lifting force and improve efficiency.
  • Bevel Gearbox: The bevel gearbox provides smooth and reliable power transmission between the motor or handle and the screw.

screw jack

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 their operating principles and characteristics. Here are some key differences between the two:

  • Operating Principle: A screw jack utilizes mechanical rotation and linear motion, while a hydraulic jack uses fluid pressure to generate lifting force.
  • Load Capacity: Screw jacks are typically designed for lower load capacities, whereas hydraulic jacks can handle much higher loads.
  • Speed and Control: Screw jacks offer precise and controlled movement but operate at a slower speed. Hydraulic jacks can lift loads faster, but control may be more challenging.
  • Maintenance: Screw jacks require minimal maintenance and are less prone to leaks or failures. Hydraulic jacks may require more regular maintenance and can be affected by fluid leaks.
  • Environmentally Friendly: Screw jacks do not require hydraulic fluids and are considered more environmentally friendly compared to hydraulic jacks.

How to Choose or Customize the Right Screw Jack

When selecting or customizing a screw jack for your specific application, several parameters and considerations come into play. Here are some key factors to keep in mind:

  1. Load Capacity: Determine the maximum load that the screw jack needs to support. Consider both the static and dynamic load requirements.
  2. Lifting Height: Determine the required vertical travel distance or stroke length of the screw jack.
  3. Operating Speed: Evaluate the desired speed of the lifting operation and select a screw jack with an appropriate gear ratio.
  4. Environmental Conditions: Consider the operating environment, such as temperature, humidity, dust, and corrosive substances. Choose a screw jack with suitable protection ratings.
  5. Mounting and Integration: Assess the available space and mounting options in your application. Ensure compatibility and ease of integration with existing systems.

screw jack

About HZPT – Your Leading Screw Jack Manufacturer

As a leading manufacturer of industrial motors, gearboxes, and drive systems in China, HZPT is dedicated to delivering technological innovation and excellent quality. Our diverse product range includes:

  • Micro Gear Motors
  • Medium-sized Gear Motors
  • Brake Control Motors
  • Torque Motors
  • DC Motors
  • NMRV Worm Gear Motors
  • Helical Bevel 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 are widely used in various industrial production lines, including transportation machinery, food machinery, medical machinery, printing machinery, textile machinery, packaging machinery, office equipment, and instrumentation. They are the preferred choice for automation equipment.

Why choose HZPT as your screw jack supplier? Here are some of our key advantages:

  1. High-Quality Manufacturing: Our screw jacks are manufactured with precision and adherence to international standards, ensuring exceptional performance and durability.
  2. Customization Options: We provide flexible customization services to meet your unique requirements. From load capacity and stroke length to specific environmental conditions, we can tailor our screw jacks to your needs.
  3. Reliable Technical Support: Our team of experienced engineers is dedicated to offering professional technical support and guidance throughout your project.
  4. Competitive Pricing: We offer competitive pricing without compromising on quality, making our screw jacks a cost-effective choice for your applications.
  5. Global Supply Network: With a well-established global supply network, we ensure timely delivery of our products to customers worldwide.

Partner with HZPT today for all your screw jack needs. Contact us now to discuss your requirements, and let us help you find the perfect solution for your lifting and positioning challenges.


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.