screw jack threaded rod

Screw Jack Threaded Rod: An Introduction

Screw jack threaded rod is a type of mechanical actuator that converts rotary motion into linear motion through the use of a screw. Screw jacks are commonly used in various applications that require lifting, lowering, positioning, or clamping of heavy loads. This article will discuss what screw jacks are used for, their working principle, the difference between screw jacks and hydraulic jacks, and how to choose or customize the right screw jack for your needs.

What is a Screw Jack Used For?

Screw jacks are used in many applications that require heavy loads to be lifted, lowered, or positioned. Some common industries that use screw jacks include construction, automotive, aerospace, and manufacturing. Here are some specific ways screw jacks are used:

  • Heavy machinery lifting: Screw jacks can be used to lift and position heavy machinery. They are often used in construction sites, assembly lines, and factories.
  • Adjusting worktables: Screw jacks are commonly used to adjust the height or angle of worktables in various industries, such as woodworking, metalworking, and electronics.
  • Stabilizing structures: Screw jacks can be used to stabilize structures, such as bridges and buildings, especially during construction or repair work.
  • Vehicle leveling: Screw jacks are used in the automotive industry to level vehicles during repairs or maintenance. They can also be used to lift cars for tire changes or other repairs.
  • Scenic design: Screw jacks are sometimes used in theater or film productions to move scenery or props on stage.

screw jack

What is the Working Principle of Screw Jack?

The working principle of screw jack is based on the fundamental properties of a screw. When a rotational force is applied to a screw, it moves in a linear direction along its axis. In a screw jack, a worm gear is used to rotate the screw, which causes the load to move up or down. The efficiency of a screw jack is determined by the lead angle of the screw, the pitch of the thread, and the friction between the screw and the load.

There are several types of screw jacks available, including machine screw jacks, ball screw jacks, and roller screw jacks. Each type has its own advantages and disadvantages, depending on the application.

screw jack

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

Screw jacks and hydraulic jacks are both types of mechanical actuators used for lifting and positioning heavy loads. However, there are some key differences between them:

  • Operation: Screw jacks are operated by a rotary motion, while hydraulic jacks are operated by pressurized fluid.
  • Load capacity: Hydraulic jacks are generally able to lift heavier loads than screw jacks.
  • Speed: Screw jacks are slower than hydraulic jacks, but they are more precise and can hold a load in position without any additional support.
  • Maintenance: Screw jacks require less maintenance than hydraulic jacks, as they have fewer moving parts and do not require hydraulic fluid.

How to Choose or Customize the Right Screw Jack

When choosing or customizing a screw jack, there are several important factors to consider:

  • Load capacity: The load capacity of the screw jack should be sufficient for the application.
  • Lifting height: The lifting height of the screw jack should be appropriate for the intended use.
  • Thread pitch: The thread pitch of the screw jack should be selected based on the desired speed and precision.
  • End fittings: The end fittings of the screw jack should be compatible with the load and the mounting surface.
  • Material: The material of the screw jack should be selected based on the environment and the load.

Customizing a screw jack can involve changing the lead angle, the pitch, the length, the end fittings, or the material. It is important to work with a reputable manufacturer who can provide customized solutions that meet your specific needs.

screw jack

HZPT: Your Trusted Screw Jack Manufacturer

At HZPT, we are a leading manufacturer and supplier of screw jacks, with a wide range of products to meet your lifting and positioning needs. Our main products include micro gear motors, medium gear motors, brake speed regulating motors, torque motors, DC motors, NMRV worm gear motors, bevel gear motors, WPRV worm gear reducers, rigid face helical gear reducers, helical gear reducers, parallel axis helical gear reducers, spiral bevel gear reducers, worm gear screw lifts, rigid face gear reducers, and planetary gear reducers.

We have extensive experience in providing custom solutions to meet the unique requirements of our customers. Our products are widely used in various industries, such as transportation, food, medical, printing, textiles, packaging, and instrumentation. We are committed to providing high-quality products and excellent customer service, and we strive to exceed our customers’ expectations in every way.

Here are some of the advantages of working with HZPT:

  • Custom solutions: We can provide customized solutions to meet your specific needs and requirements.
  • High-quality products: Our products are made with high-quality materials and manufactured to strict quality standards.
  • Competitive prices: We offer competitive prices for our products and services.
  • Expertise: Our team has extensive knowledge and expertise in the field of mechanical power transmission.
  • Customer service: We are committed to providing excellent customer service and support throughout the entire process.

Contact us today to learn more about our screw jacks and how we can help you with your lifting and positioning needs!


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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.