Screw Jacks
For Any Industrial Application.

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Whether you need to adjust the height of a conveyor belt or alter the position of equipment, we offer a range of screw jacks to suit the job.

Choose from traditional J designs or build expansive lifting mechanisms with our intelligently-engineered cubic range.

Use our CAD Configurator and System Builder tools to configure your preferred design, download CAD models and request a quote.

Learn more about how screw jacks work >

CAD ConfiguratorSystem Builder
Screw Jacks

Mini Cubic

2.5kN Lifting Capacity

It may be the baby in the range but don’t let the compact size fool you. Measuring just 50x60x50mm, this small but mighty component is capable of lifting load sizes of up to 2.5kN and is ideally suited for manual or motor driven conveyor belt or platform adjustment.

Click to read more about the Mini Cubic below or launch the CAD configurator tool to design a model fit for your specific needs.

Read More About The Mini CubicLaunch CAD Configurator
Mini Cubic Screw Jacks
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Cubic

5kN - 50kN Lifting Capacity

Our Cubic Screw Jack comes in a wide range of sizes and offers a variety of different performance configurations. Made from anodised aluminium with high-grade steel fittings, this design is ideal for lifting or positioning load.

Click below to read more or launch our free CAD Configurator or System Builder tools to start modelling your own precise designs.

Read More About The CubicLaunch CAD ConfiguratorLaunch System Builder
Cubic Screw Jacks
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Cubic Actuator

5kN - 50kN Lifting Capacity

Our Cubic Actuator Screw Jacks are perfect for short travel applications or situations that require protection from water and debris ingress. The lifting screws have a plain ground section that allows the use of a wiper seal to keep moisture out and retain internal lubricants.

Click below to read more or launch our free CAD Configurator tool to model and download your own precise design now.

Read More About The Cubic ActuatorLaunch CAD Configurator
Cubic Actuator Screw Jacks
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Cubic Ball

5kN - 50kN Lifting Capacity

When power, high speed, high duty cycle and repetitive positioning are required, our Cubic Ball Screw Jacks provide the ideal solution. A high efficiency ball screw provides a range of possible travel speeds and configurations.

Click below to read more or launch our free CAD Configurator tool to model and download your own precise design now.

Learn More About The Cubic BallLaunch CAD ConfiguratorLaunch System Builder
Cubic Ball Screw Jacks
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J Range

5kN - 1000kN Lifting Capacity

Our classic J Range models are commonly used as an industrial screw jack - capable of lifting weights of up to 1000kN.

With a comprehensive range of configuration options - from load capacity to travel lengths and repeatibility - the design possibilities are endless. Click below to read more about the J Range or view product data sheets.

Learn More About The J Range
Standard Screw Jack Range
Screw Jack Working Animation
Screw Jack Working Animation

A screw jack (sometimes referred to as a jack screw) is a device used as a lifting mechanism for heavy objects, components or platforms.

They are a popular tool of industrial leverage because screw thread technology offers an energy-efficient way to amplify force. Heavier loads can be moved with less energy expenditure compared to other methods. The linear directional movement they provide is achieved via a connection between an external drive shaft, worm and wheel component and an actuating lead screw. As the attached input drive shaft rotates (either manually operated by a hand crank or electric motor), it forces the worm gear set inside to rotate. As the wheel turns it translates a lead screw through its internal thread - thus delivering the desired linear movement.

Screw jacks are used around the world for many different industrial applications. They are more cost effective to manufacture than alternative pneumatic or hydraulic solutions and their compact size enables them to fit into difficult spaces. They are easier to maintain and, without the need for harmful fluids, there is no risk of hazardous spillages. They also have a unique ability to be used in a synchronised way with multiple units linked together in a single modular system. 

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There are several types of screw jack with slight variations in the design of the lead screw and how the linear motion is implemented.

Lead Screw Variations

The lead screw is what ultimately provides the linear directional movement from the rotational source (motor or hand wound crank). There are several variations in the design of the lead screw that results in differences in movement speed, precision and repeatability and your choice depends on your objective and the nature of your actuation needs.

Trapezoidal Screw

With a trapezoidal lead screw design, the worm wheel acts directly on the lead screw. This process utilises the friction between the threads to self-lock and is usually sufficient to prevent slippage.

Ball Screw

In this design, the worm wheel instead acts on a ball screw (via a ball nut). This is what, in-turn, actuates the lead screw indirectly. Ball screw jacks offer greater operational efficiency, greater actuation speed and, due to lower friction, are extremely durable. However, the more precise machining involved in their construction means they are more expensive to manufacture. They are not inherently self-locking and may require an additional locking mechanism or brake to prevent back-drive.

Ball Screw

Roller Screw

Roller screws operate similarly to ball screws but rather than using ball bearings, the translating nut is powered by several intricately-designed, threaded rollers. These rollers provide considerably more contact points compared to other lead screw designs enabling heavier loads to be lifted with less energy.

Their smooth translation also means they can provide superior positioning accuracy and can run at higher accelerations and speeds. The complexity of their construction makes them more durable and long lasting than other lead screw styles but also significantly more expensive to manufacture.

Motion Variations

There are also variations in the way the lead screw reacts and moves upon connection with the worm and wheel.

Translating

In a standard translating screw jack, the rotation of the worm wheel acts directly on the lead screw, causing the screw itself to translate linearly up and down. This movement is made possible via the friction between the screw threads.

Translating Keyed

The dynamics are similar to a standard translating style but the lead screw itself is instead ‘keyed’ so that it cannot rotate. It still moves linearly up and down but without turning around. This type of motion is important if the lead screw end is not to be fixed to the load being lifted.

Rotating

With a rotating screw jack style, the lead screw is fixed to the worm wheel. This works differently to a translating mechanism because the lead screw itself simply rotates and does not move linearly. Instead the linear motion function is translated to an attached nut. It is this nut that moves up and down the lead screw and, if fixed, moves the load up and down as needed.

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To build a modular lifting mechanism, the jacks themselves need to be connected to an electric motor or hand-wound device. The motor or hand-crank creates the initial rotational energy which is then converted into linear motion by the connected units.

Modular Screw Jack System

Most systems are comprised of several jacks linked together by drive shafts, couplings and bevel gearboxes. This modular style of connection is extremely flexible as design engineers can customise a system to suit their needs – including different lifting actions, speed of translation and load bearing capacity.

Modular System Design

Modular System Design

Use our free System Builder tool to design your own, customised, screw jack lifting system.

Learn More
Cubic Bevel Gearboxes

Cubic Bevel Gearboxes

Integrate bevel gearboxes into your system and drive multiple screw jacks from a single motor.

Browse Gearboxes
Cubic Accessories

Cubic Accessories

We also supply plates, drive shafts and couplings to help build your custom system.

Browse Accessories

Strength in design

All products designed and manufactured in the UK.

We have been manufacturing components in the UK for over 40 years. All products are developed and dispatched from our site in Bristol - supported by a team of experienced design engineers, production technicians and the latest manufacturing technology.

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