hollow screw jack

Hollow Screw Jack

A hollow screw jack is a type of mechanical device that uses a threaded rod to convert rotational motion into linear motion. It is commonly used in various industrial applications, such as lifting heavy loads and positioning equipment. In this article, we will explore the functions, working principles, differences with hydraulic jack, and how to choose or customize suitable screw jacks.

What is a screw jack used for?

1. Lifting heavy loads

A screw jack is widely used in industrial applications for lifting heavy loads vertically or horizontally. It is commonly used in construction machinery, lifting platforms, and factory automation equipment.

screw jack

2. Positioning equipment

Screw jacks are also effective for positioning equipment as they can be used to adjust the height or angle of a platform or machine. It is commonly used in welding machines, cutting machines, and assembly lines.

3. Leveling structures

A screw jack is useful for leveling structures and adjusting the height of a building’s foundation. It is commonly used in the construction industry.

4. Applying force

Screw jacks can be used to apply a controlled amount of force or pressure to a specific location. They are commonly used in testing equipment and calibrating instruments.

5. Actuating valves

Screw jacks can be used to actuate valves in chemical and petrochemical plants, as well as oil and gas refineries.

What is the working principle of screw jack?

A screw jack works by rotating a threaded rod to move a load. The load is attached to a lifting nut that rides on the threaded rod. As the rod rotates, the nut moves up or down, depending on the direction of the rotation. This movement creates linear motion, which allows the load to be lifted or positioned.

screw jack

There are different types of screw jacks, including worm gear screw jacks, ball screw jacks, and machine screw jacks. Each type has a unique design and mechanical advantage, which makes them suitable for different loads and applications.

What is the difference between a screw jack and a hydraulic jack?

The main difference between a screw jack and a hydraulic jack is the type of power source used to lift the load. A screw jack uses mechanical power, while a hydraulic jack uses hydraulic power from a liquid-based system.

Screw jacks are typically slower than hydraulic jacks, but they are more precise and have a higher degree of control. They are also more cost-effective and require less maintenance compared to hydraulic jacks.

How to choose or customize suitable screw jack?

The following are some parameters and considerations to keep in mind when choosing or customizing a screw jack:

1. Load capacity

The load capacity of a screw jack should be carefully considered to ensure that it can handle the weight of the load. It is important to factor in the weight of the load, as well as any additional forces that may be applied.

2. Travel length

The travel length of a screw jack should be sufficient for the application. It is important to consider the height or distance that the load needs to be lifted or positioned.

3. Speed and efficiency

The speed and efficiency of a screw jack should be considered if the application requires quick and frequent adjustments. It is important to ensure that the screw jack can operate at the required speed and efficiency.

4. Environmental conditions

The environmental conditions of the application should be considered when choosing or customizing a screw jack. It is important to ensure that the screw jack can operate in the intended environment, such as extreme temperatures, humidity, or corrosive conditions.

5. Mounting options

The mounting options of a screw jack should be considered to ensure that it can be easily and securely attached to the load or equipment. It is important to ensure that the mounting options are suitable for the application.

screw jack

Why choose HZPT’s screw jack?

As one of the leading manufacturers of screw jacks in China, HZPT offers high-quality, reliable, and cost-effective solutions for various industrial applications. Here are some advantages of HZPT’s screw jack:

1. Customizable design

HZPT’s screw jack can be customized to meet specific requirements and applications. We offer a wide range of options for load capacity, travel length, speed, and mounting options.

2. High precision

Our screw jacks are designed for high precision and control. They offer smooth and accurate movement, which ensures that the load or equipment is positioned or lifted with precision.

3. Robust construction

Our screw jacks are made of high-quality materials and are built to withstand harsh environmental conditions. They are durable, reliable, and require minimal maintenance.

4. Competitive pricing

We offer competitive pricing for our screw jacks, which makes them an affordable and cost-effective option for various industrial applications.

5. Excellent customer service

Our team of experts offers excellent customer service and technical support to ensure that our customers receive the best solutions and services.

For more information about our screw jacks and other transmission products, please visit our website or contact us directly.


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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.