aircraft jackscrew

aircraft jackscrew


The aircraft jackscrew is a critical component used in the aviation industry for various applications. It plays a vital role in ensuring the smooth operation of different aircraft systems. In this article, we will explore the functionalities, working principles, and differences between a screw jack and a hydraulic jack. We will also discuss the parameters and considerations for selecting or customizing the appropriate screw jack. Additionally, we will highlight the advantages and features of our screw jack products at HZPT, a leading manufacturer of industrial motors, gearboxes, and drivers.

What is a screw jack used for?

The screw jack finds extensive use in different industries, primarily in aviation. Here are some key applications:

  1. Aircraft maintenance: Screw jacks are used for lifting and supporting aircraft during maintenance and repair tasks. This ensures a stable and secure working environment for technicians.
  2. Cargo handling: Screw jacks are employed in cargo loading and unloading systems to safely and efficiently move heavy loads within an aircraft.
  3. Flight control systems: Screw jacks contribute to the precise movement and positioning of flight control surfaces, such as ailerons, elevators, and rudders.
  4. Landing gear deployment: Screw jacks aid in the smooth extension and retraction of an aircraft’s landing gear, ensuring safe takeoffs and landings.
  5. Aircraft assembly: Screw jacks provide support during the assembly of various aircraft parts, facilitating accurate alignment and fastening processes.

screw jack

What is the working principle of screw jack?

The working principle of a screw jack involves the conversion of rotational motion into linear motion using a screw and a nut. Here are the key steps:

  1. Rotational input: The screw jack receives rotational input through a motor or manual crank.
  2. Rotational motion conversion: As the input rotates, the screw, with its threaded profile, engages with a nut.
  3. Linear motion generation: The rotational motion of the screw is converted into linear motion by the threaded engagement with the nut. This linear motion allows for the lifting or lowering of loads or the precise movement of control surfaces.
  4. Load support: The screw jack is designed to withstand heavy loads and provide stable support throughout its operation.

screw jack

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

While both screw jacks and hydraulic jacks serve similar purposes, they differ in their operating principles:

  • Power source: Screw jacks are typically powered by electric or manual means, while hydraulic jacks rely on hydraulic fluid pressure.
  • Mechanism: Screw jacks use a screw and nut mechanism for linear motion, whereas hydraulic jacks use fluid pressure to generate force.
  • Speed and precision: Screw jacks offer slower but more precise and controllable motion, while hydraulic jacks provide faster operation but with less fine-tuning capability.
  • Load capacity: Screw jacks are generally more suitable for heavy loads, while hydraulic jacks are preferred for lighter applications.
  • Maintenance: Screw jacks require less maintenance and are easier to service compared to hydraulic jacks.

How to choose or customize the right screw jack?

When selecting or customizing a screw jack, several factors and parameters need to be considered:

  1. Load capacity: Determine the maximum load the screw jack needs to handle to ensure optimal performance and safety.
  2. Travel distance: Define the required vertical travel distance to select the appropriate screw jack with the necessary stroke length.
  3. Speed requirements: Consider the desired lifting or lowering speed to choose a screw jack with an appropriate gear ratio or mechanism.
  4. Environment: Assess the operating environment conditions, such as temperature, humidity, and exposure to chemicals or dust, to select a screw jack with suitable materials and protective coatings.
  5. Mounting options: Determine the preferred mounting arrangement, such as upright, inverted, or multiple screw jacks in a system.

screw jack

About HZPT – Your Trusted Screw Jack Manufacturer

As a leading manufacturer of industrial motors, gearboxes, and drivers, HZPT is dedicated to delivering innovative technology and excellent quality products. Our range of screw jack products includes:

  • Micro gear motors: Compact and efficient gear motors ideal for precise and low-load applications.
  • Medium gear motors: Versatile gear motors suitable for a wide range of industrial applications.
  • Brake speed control motors: Motors with built-in braking and speed control capabilities for enhanced safety and control.
  • Torque motors: High-torque motors designed to deliver powerful performance in demanding applications.
  • DC motors: Reliable and efficient direct current motors for various industrial needs.

At HZPT, we take pride in our NMRV worm gear motors, bevel gear motors, WPRV worm gear reducers, rigid face gear reducers, helical gears, parallel shaft helical gear reducers, spiral bevel gear reducers, worm screw lifts, rigid face gear reducers, and planetary gear reducers. Our products find extensive use in transportation machinery, food machinery, medical equipment, printing machinery, textile machinery, packaging machinery, office equipment, and instrumentation fields. We are the preferred choice for automation equipment.

In choosing HZPT, you benefit from:

  1. Technological innovation: We constantly lead the way with cutting-edge technology and innovative solutions.
  2. Superior quality: Our products undergo rigorous quality control processes to ensure exceptional performance and reliability.
  3. Wide range of products: We offer a comprehensive selection of motors, gearboxes, and drivers to meet diverse industry needs.
  4. Customization options: We provide tailored solutions to match specific customer requirements and applications.
  5. Industry expertise: With years of experience, we have gained valuable insights and knowledge to deliver top-notch products and services.

Choose HZPT as your trusted partner for all your screw jack needs and experience the difference in performance and quality.


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.