screw type floor jack

Screw Type Floor Jack: A Comprehensive Guide

Screw type floor jack, also known as mechanical jack or house jack, is a device used to lift heavy loads or vehicles. It is commonly used in automotive repair shops or DIY garages. In this article, we will discuss the uses, working principles, and differences between screw jacks and hydraulic jacks. We will also provide tips on how to choose or customize the right screw jack for your needs. Additionally, we will introduce our company, HZPT, and recommend our screw jack products and advantages.

What is a Screw Jack Used for?

There are various uses for screw jacks, including:

Lifting Vehicles

Screw jacks are commonly used to lift vehicles, such as cars and trucks, for maintenance or repair purposes.

screw jack

Adjusting Workbenches or Tables

Screw jacks can be used to adjust the height of workbenches or tables. This is particularly useful in industrial or manufacturing settings.

Stabilizing Buildings

In construction or renovation projects, screw jacks can be used to stabilize buildings or structures.

Supporting Heavy Equipment

Screw jacks can also be used to support heavy equipment, such as industrial machinery.

Custom Applications

Screw jacks can be customized to fit specific applications, such as lifting heavy objects or supporting unique structures or equipment.

What is the Working Principle of Screw Jack?

The working principle of screw jacks is based on the conversion of rotary motion into linear motion. It consists of a threaded screw (male) and a nut (female) that meshes with the screw. The screw is rotated using a crank or a motor, which causes the nut to move up or down along the screw thread. As the nut moves up, it lifts the load attached to it.

screw jack

The main components of screw jacks include:

  • Worm Gear: Transmits the rotary motion of the input shaft to the worm.
  • Worm Shaft: Rotates the worm gear.
  • Worm Wheel: Meshes with the worm gear and transfers the rotary motion to the ball screw.
  • Ball Screw: Converts the rotary motion into linear motion.
  • Ball Nut: Moves up or down along the ball screw, depending on the direction of rotation.
  • Load Platform: Supports the load to be lifted or lowered.

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

There are several differences between screw jacks and hydraulic jacks, including:

Power Source

Screw jacks are manually operated using a crank or a motor, while hydraulic jacks are powered by hydraulic fluid under pressure.

Lifting Capacity

Hydraulic jacks typically have a higher lifting capacity than screw jacks.


Hydraulic jacks can lift loads faster than screw jacks.


Screw jacks provide more precise control over the lifting process, while hydraulic jacks can be more difficult to control.


Screw jacks require less maintenance than hydraulic jacks, as they do not have hydraulic fluid that needs to be changed or serviced regularly.

How to Choose or Customize the Right Screw Jack?

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

Lifting Capacity

The lifting capacity of the screw jack should match the weight of the load to be lifted. Ensure that you choose a screw jack with a higher capacity than the load to be lifted for safety reasons.

Lifting Height

The lifting height of the screw jack should be sufficient to lift the load to the desired height. Consider the maximum height required and choose a screw jack with a higher lifting height to allow for flexibility.


The speed of the screw jack depends on the thread pitch, gear ratio, and motor speed. Determine the required lifting speed for your application and choose a screw jack with an appropriate speed.


The environment in which the screw jack will be used should be considered. If the environment is dirty or wet, choose a screw jack with a protective cover or a stainless-steel construction.

Mounting Options

The screw jack should be compatible with the mounting options available in your application. Determine the mounting options required and choose a screw jack with appropriate mounting options.

screw jack

HZPT: Your Trusted Screw Jack Manufacturer

As a leading manufacturer of industrial motors, gearboxes, and drive systems, HZPT is committed to providing quality products and excellent customer service. Our screw jack products are designed to meet the needs of various applications, including automotive, manufacturing, and construction.

Our screw jack products have the following advantages:

  • High Lifting Capacity
  • Precise Control
  • Durable Construction
  • Low Maintenance
  • Customizable Options

Contact us today to learn more about our screw jack products or to request a custom solution for your application.


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.