threaded jack screw

Threaded Jack Screw: The Unsung Hero of Mechanical Engineering

Threaded jack screw, also known as a screw jack or a worm gear screw jack, is a versatile mechanical device that plays a crucial role in various applications across industries. In this comprehensive article, we will explore the intricacies of threaded jack screws, their applications, working principles, differences from hydraulic jacks, and how to choose or customize the right screw jack for your specific needs.

1. What is a screw jack used for?

Screw jacks are used for a wide range of lifting, lowering, pushing, pulling, and positioning tasks in numerous industries. They are commonly used in heavy machinery, construction equipment, automotive applications, and even in home garage setups. Here are some key applications of screw jacks:

  • Industrial lifting and leveling systems
  • Material handling and conveyor systems
  • Adjustable platforms and stages
  • Presses and stamping machines
  • Heavy-duty vehicle lifts
  • Robotic and automation systems
  • Medical and rehabilitation equipment
  • Aircraft maintenance and assembly
  • And much more!

screw jack

2. What is the working principle of screw jack?

The working principle of a screw jack can be explained by the concept of threaded mechanical advantage. When a force is applied to the handle or motor of the screw jack, it rotates the worm gear, which in turn moves the lifting screw. The helical shape of the screw converts the rotational motion into linear motion, allowing for precise and controlled movement of heavy loads. The mechanical advantage provided by the thread pitch of the screw enables the screw jack to exert a significantly higher force than the input force applied.

screw jack

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

While both screw jacks and hydraulic jacks serve the purpose of lifting heavy loads, they operate on different principles and offer distinct advantages. Here are some key differences between the two:

  • Screw jacks are mechanical devices that utilize the rotational motion of a worm gear and a threaded screw, while hydraulic jacks use hydraulic fluid and pistons.
  • Screw jacks are generally slower in operation but provide higher force capacity, while hydraulic jacks offer faster operation but may have limitations in terms of force.
  • Screw jacks can hold their position without the need for continuous energy input, while hydraulic jacks require constant hydraulic pressure to maintain load support.
  • Screw jacks are more compact and suitable for limited space applications, while hydraulic jacks require additional space for hydraulic fluid reservoirs and piping.
  • Screw jacks are generally more cost-effective and easier to maintain compared to hydraulic jacks.

4. How to choose or customize the right screw jack?

When selecting or customizing a screw jack for your specific application, several parameters and considerations come into play. Here are the key factors to keep in mind:

  • Load capacity and lifting requirements
  • Travel distance and speed
  • Environment and operating conditions (temperature, moisture, etc.)
  • Mounting options and space constraints
  • Required safety features (anti-backlash, overload protection, etc.)

screw jack

HZPT: Your Trusted Screw Jack Manufacturer

As a leading manufacturer of industrial motors, gearboxes, and drive products in China, HZPT takes pride in our commitment to technological innovation and excellent quality. Our extensive range of products includes micro gear motors, medium-sized gear motors, braking speed motors, torque motors, DC motors, NMRV worm gear motors, bevel gear motors, WPRV worm gearboxes, rigid face gear reducers, helical worm gear reducers, parallel shaft helical gear reducers, spiral bevel gear reducers, worm screw lifts, rigid face gear reducers, planetary gear reducers, and other power transmission products.

Our products find wide applications in various industrial production lines, including transportation machinery, food machinery, medical machinery, printing machinery, textile machinery, packaging machinery, office equipment, instruments, and more. We are the preferred choice for automation equipment due to our dedication to providing reliable and efficient products.

To convince you further, here are five key advantages of choosing HZPT screw jacks:

  1. High-quality materials and precise manufacturing techniques ensure durability and long service life.
  2. Advanced design and engineering capabilities allow for customized solutions tailored to your specific requirements.
  3. Strict quality control measures and comprehensive testing guarantee optimal performance and safety.
  4. Competitive pricing and excellent value for money make HZPT screw jacks a cost-effective choice.
  5. Professional technical support and responsive customer service ensure a smooth and satisfactory experience.

We invite you to partner with HZPT for all your screw jack needs, and experience the reliability and performance that has made us a trusted name in the industry.

screw jack


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.