jack nut bolt

Jack Nut Bolt: A Comprehensive Guide

A jack nut bolt or screw jack is a mechanical device used in various industrial applications for lifting heavy loads or applying force. It is a simple yet powerful machine that converts rotary motion into linear motion, based on the principle of a screw and a nut. Screw jacks are widely used in industrial machinery, construction sites, and other heavy-duty applications where lifting, lowering, pushing, or pulling is required.

What is a Screw Jack Used For?

There are many uses of screw jacks in different industries. Here are some of the most common uses:

  • Lifting heavy loads: Screw jacks are used to lift heavy loads in various applications such as automobile repair shops, construction sites, and warehouses.
  • Adjusting heights: Screw jacks are used to adjust the height of different components in industrial machinery, such as conveyor belts, assembly lines, and packaging machines.
  • Applying force: Screw jacks are used to apply force in various industrial applications such as pressing, pulling, and pushing.
  • Stabilizing structures: Screw jacks are used to stabilize different structures such as bridges, buildings, and heavy machines.
  • Aligning heavy machinery: Screw jacks are used to align heavy machinery during installation or maintenance.

screw jack

What is the Working Principle of Screw Jack?

The working principle of a screw jack is based on the principle of a screw and a nut. The screw is a rotating shaft with a thread that moves inside a fixed nut. When the screw is rotated, it moves linearly, pushing or pulling the load attached to it.

As the screw rotates, it advances a fixed distance with each turn, depending on the pitch of the thread. The load can be lifted or lowered by adjusting the rotation of the screw. The mechanical advantage of a screw jack is determined by the pitch of the screw and the number of threads in the nut.

screw jack

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

Both screw jacks and hydraulic jacks are used to lift heavy loads. However, there are some differences between the two:

  • Power source: Screw jacks are powered by manual or electric rotation, while hydraulic jacks are powered by hydraulic pressure.
  • Speed: Screw jacks are slower than hydraulic jacks, as they rely on the rotation of the screw to lift the load. Hydraulic jacks can lift heavy loads quickly.
  • Precision: Screw jacks offer more precision in lifting and lowering heavy loads, as the rotation of the screw can be controlled more accurately. Hydraulic jacks may be harder to control precisely due to the hydraulic pressure.
  • Efficiency: Screw jacks are more efficient than hydraulic jacks in terms of energy consumption, as they do not require a hydraulic power source.

How to Choose or Customize the Right Screw Jack?

Choosing or customizing the right screw jack requires considering various factors, such as the load capacity, speed, precision, and environment. Here are some of the factors to consider:

  • Load capacity: Determine the maximum load that the screw jack will need to lift or support.
  • Lift height: Determine how high the load needs to be lifted or lowered.
  • Speed: Determine how fast the load needs to be lifted or lowered.
  • Precision: Determine the level of precision required for the application.
  • Environment: Consider factors such as temperature, humidity, and dust that may affect the performance of the screw jack.

screw jack

HZPT: Your Trusted Screw Jack Manufacturer

At HZPT, we specialize in manufacturing and selling high-quality screw jacks for various industrial applications. We have years of experience in the industry and have built a solid reputation for providing reliable and efficient screw jacks that meet our customers’ specific needs.

Here are some of the advantages of choosing HZPT as your screw jack manufacturer:

  • Customization: We offer customized screw jacks that are designed to meet your specific requirements.
  • Quality: We use only the highest quality materials to ensure that our screw jacks are durable and long-lasting.
  • Reliability: Our screw jacks are designed to operate smoothly and efficiently, even in harsh industrial environments.
  • Competitive pricing: We offer competitive pricing on all our screw jacks, without compromising on quality.
  • Excellent customer service: We provide excellent customer service and support to ensure that our customers are fully satisfied with our products.

Choose HZPT for all your screw jack needs and experience the difference in quality and service.


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.