under hoist screw jack

Under Hoist Screw Jack: The Ultimate Guide

When it comes to heavy lifting, one of the most important tools in your arsenal is the screw jack. Screw jacks, particularly under hoist screw jacks, are used to lift and support heavy objects, making them essential in a wide range of industries, from automotive repair to manufacturing.

What is a Screw Jack Used For?

screw jack

1. Lifting Heavy Objects

The primary use of a screw jack is to lift heavy objects. Under hoist screw jacks are particularly useful in the automotive industry, where they are used to lift vehicles for repair work.

2. Providing Support

Screw jacks are also used to provide support to heavy objects, keeping them stable while work is being done. This is particularly important in manufacturing and construction, where safety is a top priority.

3. Adjusting Height

Screw jacks can be used to adjust the height of heavy objects. This is useful in situations where the object needs to be at a specific height for work to be carried out.

4. Applying Pressure

In some cases, screw jacks can be used to apply pressure to objects. This is useful in situations where a controlled amount of pressure is needed to complete a task, such as pressing parts together in manufacturing.

5. Creating Movement

Screw jacks can be used to create movement in heavy objects. This is useful in situations where you need to move an object from one place to another, such as when repositioning heavy machinery in a factory.

What is the Working Principle of Screw Jack?

screw jack

1. Mechanical Advantage

The working principle of a screw jack is based on mechanical advantage. The basic idea is that by turning a screw, you can multiply the amount of force you apply.

2. Threaded Rod

The screw jack consists of a threaded rod, which is turned using a handle or motor. As the threaded rod turns, it moves a nut along its length.

3. Lifting Mechanism

The nut is connected to a lifting mechanism, which can be a platform, a saddle, or a lifting pad. As the nut moves along the threaded rod, the lifting mechanism is raised or lowered, depending on the direction of rotation.

4. Stabilizing Mechanism

Screw jacks also have a stabilizing mechanism, which keeps the lifting mechanism stable as it moves up or down. This is usually in the form of guide rods or bearings.

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

Screw jacks and hydraulic jacks are both used for lifting heavy objects, but they operate on different principles.

1. Power Source

Screw jacks are powered by a motor or hand crank, while hydraulic jacks are powered by hydraulic fluid.

2. Maintenance

Screw jacks require less maintenance than hydraulic jacks, as they have fewer moving parts and do not require hydraulic fluid.

3. Lift Capacity

Hydraulic jacks are generally capable of lifting heavier loads than screw jacks, making them better suited to heavy industrial applications.

How to Choose or Customize the Right Screw Jack?

screw jack

1. Load Capacity

The load capacity of a screw jack is the most important parameter to consider. Make sure you choose a screw jack that is capable of handling the weight of the load you need to lift or support.

2. Travel Distance

The travel distance of a screw jack is the maximum height it can lift or lower the load. Make sure you choose a screw jack with a travel distance that is appropriate for your needs.

3. Screw Pitch

The screw pitch determines the amount of force that can be applied to the load. A larger screw pitch means a greater force can be applied, but the travel distance will be shorter.

4. Duty Cycle

The duty cycle is the amount of time the screw jack can be used continuously without overheating. Make sure you choose a screw jack with a duty cycle that is appropriate for your needs.

5. Mounting Options

Make sure you choose a screw jack with mounting options that are compatible with your application. Screw jacks can be mounted in a variety of ways, including base mounting, top mounting, and clevis mounting.

HZPT: Your Trusted Partner for Screw Jacks

As a leading manufacturer of industrial motors, gearboxes, and drive systems, HZPT is proud to offer a wide range of screw jacks for all your heavy lifting needs.

1. High-Quality Materials

All of our screw jacks are made from high-quality materials, ensuring long-lasting durability and reliability.

2. Customizable Options

We offer a range of customizable options for our screw jacks, allowing you to choose the best configuration for your specific application.

3. Expert Support

Our team of expert engineers is always available to help you choose the right screw jack for your needs and provide ongoing support throughout the manufacturing process.

4. Competitive Prices

We offer competitive pricing on all of our screw jacks, ensuring that you get the best value for your investment.

5. Fast Delivery

We offer fast delivery on all of our screw jacks, so you can get the equipment you need when you need it.


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.