flat screw jack

Flat Screw Jack

A flat screw jack is a versatile machinery component that is used to generate linear motion through the conversion of rotary motion. This blog will explore various aspects of the flat screw jack, including its applications, working principle, and differences from hydraulic jacks. We will also discuss how to choose the right screw jack for your needs and introduce HZPT, a leading manufacturer of screw jacks and other transmission products.

What is a Screw Jack Used For?

screw jack

Screw jacks are used in a variety of applications that require linear motion or force. Here are some common uses:

  • Lifting heavy loads in construction, manufacturing, and transportation
  • Adjusting the height or position of equipment in factories and workshops
  • Providing linear motion for gates, valves, and other mechanical devices
  • Controlling the tension of cables and wires in the telecommunications industry
  • Generating force for presses, brakes, and clamps in metalworking and woodworking

What is the Working Principle of Screw Jack?

screw jack

The working principle of a screw jack is based on the mechanical advantage of a threaded shaft. When a force is applied to the shaft, the thread converts the rotational motion into linear motion, which can be used to lift or move a load. The mechanical advantage of a screw jack can be increased by using a larger diameter shaft, a finer thread pitch, or multiple stages of threads.

There are several components that make up a typical screw jack:

  • The lifting screw, which is the threaded shaft that converts rotary motion to linear motion
  • The drive shaft, which rotates the lifting screw
  • The worm gear, which transfers the torque from the drive shaft to the lifting screw
  • The housing, which encloses and supports the other components

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

Screw jacks and hydraulic jacks are both used for lifting heavy loads, but they operate on different principles. A screw jack uses mechanical force to lift a load, while a hydraulic jack uses the pressure of a fluid, usually oil. Here are some key differences:

  • Screw jacks are slower and have a lower lifting capacity than hydraulic jacks
  • Hydraulic jacks require a hydraulic pump or other power source, while screw jacks can be operated manually or with a motor
  • Screw jacks are more precise and have greater control over the lift height than hydraulic jacks
  • Hydraulic jacks generate more heat and noise than screw jacks

How to Choose or Customize the Right Screw Jack

screw jack

When choosing or customizing a screw jack for your application, there are several factors to consider:

  • Load capacity: Choose a screw jack that can handle the weight of your load, with a safety factor for unexpected forces
  • Lift height: Determine the maximum and minimum height you need the screw jack to lift, and choose a model with an appropriate stroke length
  • Screw pitch: Consider the speed of the lift and the precision required, and choose a screw pitch that balances these needs
  • Operating environment: Choose a screw jack with materials and coatings that can withstand the temperature, moisture, and chemicals present in your environment
  • Mounting options: Consider the space and accessibility available for mounting the screw jack, and choose a model with appropriate mounting options

HZPT’s Screw Jack and Transmission Products

HZPT is a leading manufacturer of screw jacks and other transmission products for various industrial applications. Our products are known for their high quality, durability, and precision. Here are some advantages of our products and company:

  • Customization: We offer a wide range of screw jack models with various load capacities, lift heights, screw pitches, and mounting options. We can also customize our products to meet your specific needs.
  • High quality: Our screw jacks are made with high-grade materials and advanced manufacturing techniques, ensuring reliable performance and long service life.
  • Expertise: We have a team of experienced engineers who can help you choose the right screw jack for your application and provide technical support.
  • Fast delivery: We have a large inventory of standard products and a streamlined production process, allowing us to deliver our products quickly.
  • Competitive pricing: We offer competitive prices for our products, without sacrificing quality or service.

Choose HZPT for your screw jack and transmission needs, and experience the benefits of our high-quality products and expert 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.