galvanized screw jacks

Galvanized Screw Jacks: A Comprehensive Guide

screw jack


Galvanized screw jacks are an essential part of many industrial processes. These jacks have been used for many years to provide a reliable and efficient way to lift heavy loads, adjust heights, and adjust positions in various applications. In this guide, we’ll explore the various aspects of galvanized screw jacks, including their uses, working principle, and how to choose the right one for your needs.

What is a Screw Jack Used For?

screw jack

Heavy Lifting and Positioning

Screw jacks are typically used for lifting and positioning heavy loads. They can be found in various industries such as construction, mining, and transportation. These jacks have a strong lifting capacity with load ratings ranging from a few hundred pounds to over 100 tons. They are often used to lift structures such as bridges, buildings, and heavy machinery.

Adjusting Height and Position

Screw jacks are also used to adjust the height and position of various structures. They are commonly found in stage and theater settings, where they are used to raise and lower lighting fixtures and scenery. They are also used in automotive repair shops to adjust the height of car lifts and in manufacturing plants to adjust the height of conveyor belts.

Stabilizing and Leveling

Screw jacks are also used to stabilize and level various structures. They are often used in construction to support temporary structures such as scaffolding and shoring. Screw jacks can also be used to level equipment such as printing presses and CNC machines.

What is the Working Principle of Screw Jack?

screw jack

Simple Machines

Screw jacks are a type of simple machine, which means they use mechanical advantage to multiply force. The basic components of a screw jack are a screw, a worm gear, and a load-bearing platform.

Turning the Screw

When a force is applied to the handle of the screw jack, it turns the screw. The screw is threaded and passes through the worm gear, which acts as a screw nut. As the screw turns, it moves the load-bearing platform up or down.

Multiplying Force

The mechanical advantage of a screw jack comes from the fact that the thread of the screw is a long incline plane. This means that a small amount of force applied to the handle can generate a large amount of force to lift or move a heavy load. The worm gear also provides a high gear ratio, which further multiplies the force applied to the handle.

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

While screw jacks and hydraulic jacks can both be used for lifting heavy loads, they have some significant differences.

Mechanical vs. Hydraulic Power

Screw jacks use mechanical power to lift and move loads, while hydraulic jacks use hydraulic power. Hydraulic jacks are typically used in situations where a higher lifting capacity is required, and more precise control is needed.

Cost and Maintenance

Screw jacks are generally less expensive than hydraulic jacks, and they require less maintenance. Hydraulic jacks require regular maintenance and replacement of hydraulic fluid, which can be costly and time-consuming.

Load Capacity

Hydraulic jacks have a higher load capacity than screw jacks and can lift heavier loads. However, screw jacks are still capable of lifting significant weights, with load ratings ranging from a few hundred pounds to over 100 tons.

Choosing and Customizing the Right Screw Jack

screw jack

Load Capacity

The first factor to consider when choosing a screw jack is the load capacity. The load capacity of a screw jack is determined by the size and strength of the screw and the worm gear. It’s essential to choose a screw jack with a load capacity that exceeds the weight of the load you need to lift or move.

Lifting Height

The lifting height of a screw jack is determined by the length of the screw and the worm gear. It’s essential to choose a screw jack with a lifting height that meets the requirements of your application.

Screw Pitch

The screw pitch determines the speed of the screw jack. A screw with a coarse pitch will move faster than a screw with a fine pitch. It’s essential to choose a screw jack with a screw pitch that meets the speed requirements of your application.

Mounting Options

Screw jacks can be mounted in various ways, including upright, inverted, and on their sides. It’s essential to choose a mounting option that works best for your application.

Customization Options

Screw jacks can be customized to meet specific application requirements. Customization options include special coatings, materials, and mounting options.

Why Choose HZPT Screw Jacks?

As a leading manufacturer of industrial motors, gearboxes, and power transmission products, HZPT produces high-quality galvanized screw jacks for various applications. Here are five reasons to choose HZPT screw jacks:

High Load Capacity

Our screw jacks have a high load capacity, making them ideal for lifting and moving heavy loads.

Customizable Options

We offer customization options to meet specific application requirements, including special coatings, materials, and mounting options.

Durable and Long-Lasting

Our screw jacks are made from high-quality materials and are designed to withstand harsh environments, ensuring long-lasting performance.

Cost-Effective Solutions

Our screw jacks are cost-effective solutions for lifting and moving heavy loads, making them an excellent investment for any business.

Expert Technical Support

Our team of expert engineers and technical support staff are available to answer any questions you may have and provide assistance with selecting the right screw jack for your needs.


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.