ellis screw jack 4×4

Ellis Screw Jack 4×4 – A Comprehensive Guide

Ellis Screw Jack 4×4

screw jack


Ellis Screw Jack 4×4 is a versatile and reliable lifting and leveling solution for various applications. With its precision-engineered design and robust construction, this screw jack is capable of handling heavy loads and providing stable support even on uneven surfaces.

What is a Screw Jack Used For?

A screw jack is a mechanical device used to lift and lower heavy loads, as well as to apply force or hold objects in place. It is commonly used in various industrial applications, such as in manufacturing, construction, automotive, and aerospace industries, as well as in home and DIY projects.

Here are some specific uses of screw jacks:

  • Supporting heavy machinery and equipment
  • Adjusting the height of workbenches and platforms
  • Lifting and leveling structures, such as buildings and bridges
  • Stabilizing and positioning objects, such as antennas and solar panels
  • Providing precise linear motion in machinery and automation systems

screw jack

What is the Working Principle of Screw Jack?

The working principle of a screw jack is based on the concept of the screw thread. A screw thread is a helical ridge or groove that forms around the surface of a cylindrical or conical object, such as a screw or bolt. When a rotational force is applied to the screw thread, it creates a linear motion along the axis of the object.

In a screw jack, this linear motion is used to lift or lower a load by rotating the screw shaft, which engages with a lifting nut or a traveling nut. The lifting nut or traveling nut is attached to the load, and as the screw shaft rotates, it moves the nut along its thread, causing the load to move up or down.

The mechanical advantage of a screw jack is determined by the pitch of the screw thread and the number of threads on the screw shaft. By increasing the pitch or the number of threads, the screw jack can lift heavier loads with less effort, but at a slower speed.

screw jack

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

Both screw jacks and hydraulic jacks are used for lifting and leveling heavy loads, but they operate on different principles and have different characteristics.

A screw jack is a mechanical device that uses the screw thread to lift and lower loads. It is simple and reliable, with no need for external power or fluid. It is also more precise and stable, as it can hold the load in place without any drifting or leaking.

A hydraulic jack, on the other hand, uses a hydraulic fluid to generate pressure and force to lift the load. It requires an external power source, such as an electric motor or a hand pump, to operate. It is faster and more powerful than a screw jack, but it is also more complex and requires more maintenance.

How to Choose or Customize a Suitable Screw Jack?

Choosing or customizing a suitable screw jack depends on various factors, such as the load capacity, the lifting height, the speed, the environment, and the budget. Here are some important parameters to consider:

  • Load capacity: The maximum weight that the screw jack can lift and support without failure. It depends on the diameter and pitch of the screw thread, as well as the number of threads on the screw shaft.
  • Lifting height: The distance that the screw jack can lift the load from its initial position to its final position. It depends on the length of the screw shaft and the height of the lifting nut or traveling nut.
  • Speed: The rate at which the screw jack can lift or lower the load. It depends on the pitch of the screw thread and the rotational speed of the screw shaft.
  • Environment: The conditions in which the screw jack will be used, such as temperature, humidity, corrosion, and vibration. It may require special coatings, materials, or seals to withstand harsh environments.
  • Budget: The cost of the screw jack, including the initial purchase, installation, and maintenance. It should be balanced with the performance and quality of the screw jack.

screw jack

Why Choose HZPT Screw Jack?

As a leading manufacturer of industrial motors, gearboxes, and drives, HZPT is committed to providing high-quality and customized solutions for various industries. Our screw jack products are designed and manufactured to meet the most demanding requirements of our customers, with the following advantages:

  • Wide range of load capacity, lifting height, speed, and configuration options to choose from, with customizable features and accessories.
  • Precision-engineered screw threads and lifting nuts for smooth and stable operation, with high efficiency and low noise.
  • Durable and corrosion-resistant materials, such as stainless steel, aluminum, and bronze, for long-lasting performance and low maintenance.
  • Compliant with international standards and certifications, such as CE, ISO, and RoHS, for quality assurance and safety.
  • Professional and responsive technical support and after-sales service, with on-site installation and training available.

Contact us today to learn more about our screw jack products and how we can help you with your lifting and leveling needs.


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Ep Screw Jack Co., Ltd.

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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.