screw and jack





Screw and Jack

Screw and Jack

screw jack

A screw jack is a mechanical device that is used to lift heavy loads vertically or in a horizontal plane. It is made up of a screw and a nut that are used to control the position of a lifting platform. Unlike hydraulic jacks, screw jacks use mechanical power to lift a load and are ideal for applications that require precise positioning.

What is a screw jack used for?

Screw jacks are used in a variety of applications, including:

  • Heavy machinery lifting
  • Positioning of large components
  • Adjustment of work tables and platforms
  • Setting of bridges and structural steelwork
  • Welding and fabrication applications

screw jack

What is the working principle of screw jack?

Screw jacks work on the principle of a screw and nut mechanism. When the screw is rotated, it moves the nut up or down, depending on the direction of rotation. This movement is translated into linear motion, which is used to lift a load. The pitch of the screw determines the amount of linear motion per revolution of the screw. The higher the pitch, the greater the linear motion per revolution.

screw jack

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 method used to lift a load. Screw jacks use mechanical power, whereas hydraulic jacks use fluid power. Hydraulic jacks are ideal for applications that require high lifting capacities and fast lifting speeds, but they are less precise than screw jacks. Screw jacks are ideal for applications that require precise positioning and slow lifting speeds.

How to choose or customize the right screw jack?

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

  • Load capacity
  • Lifting height
  • Screw pitch
  • Speed of lifting
  • Environment

The load capacity of a screw jack should be greater than the weight of the load being lifted. The lifting height should also be considered to ensure that the screw jack can lift the load to the required height. The screw pitch determines the linear motion per revolution of the screw, which affects the speed of lifting. The environment in which the screw jack will be used should also be considered, as it may affect the material selection and corrosion resistance of the screw jack.

screw jack

About HZPT

As a leading manufacturer of industrial motors, gearboxes, and drivers, HZPT is committed to providing customers with innovative and high-quality products. Our product range includes:

  • Micro gear motors
  • Medium gear motors
  • Brake speed regulators
  • Torque motors
  • DC motors
  • NMRV worm gearboxes
  • Bevel gearboxes
  • WPRV worm gear reducers
  • Rigid face bevel gear reducers
  • Helical bevel gear reducers
  • Parallel shaft helical gear reducers
  • Spiral bevel gearboxes
  • Worm screw lifts
  • Rigid face gear reducers
  • Planetary gear reducers

Our products are widely used in various industrial production lines, such as transportation machinery, food machinery, medical machinery, printing machinery, textile machinery, packaging machinery, office equipment, and instruments and meters. We are the preferred supporting product for automated equipment.

Choosing HZPT as your screw jack supplier has many advantages:

  • Customization services to meet your specific requirements
  • High-quality products that meet international standards
  • Competitive prices to help you save on costs
  • Fast delivery times to meet your production schedule
  • Outstanding customer service to ensure your satisfaction

Contact us today to learn more about our screw jacks and how we can help you with your industrial needs.


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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.