Screwjacks & Linear Actuation
Motion technology such as linear actuators and screwjacks play an integral role in both mechanical and industrial engineering to achieve optimal efficiency and precision.
Over the years, we’ve supported thousands of customers across industries — from engineers and maintenance teams to factory managers and project leads — helping them choose the right screwjack or linear actuator for their specific needs. Whether you’re here to learn the difference between the two, or you’re just trying to find the best solution for your application, our online store is designed to guide you every step of the way.
What Exactly is a Screwjack?
A screwjack (sometimes called a mechanical jack or worm gear screw jack) is a brilliant bit of engineering that turns rotary motion into precise, linear movement. It uses a threaded screw and worm gear mechanism to either lift, lower, or hold heavy loads, often with surprising ease. These are ideal when you need slow, steady, and incredibly reliable motion.
Over the years, I’ve recommended screwjacks for all sorts of uses — adjusting large conveyor systems, synchronising platform lifts, or even levelling machinery on uneven ground. They can be operated manually or powered electrically, and they’re known for their sheer mechanical strength and low maintenance requirements.
And What About Linear Actuators?
If speed, accuracy, or automation are more your game, linear actuators might be the better fit. These devices push or pull in a straight line and are used everywhere — from robotics and lab equipment to automotive assembly lines and even smart furniture.
They come in all shapes and sizes. Some are built for rapid movement, others for fine, delicate adjustments. I’ve had clients in food packaging who need washdown-safe actuators, and others in aerospace who need extreme precision — we’ve always found a solution.
Which One Should You Choose?
Here’s a simple way to think about it:
- Choose a screwjack if you need to lift or hold heavy loads, want something that won’t drift or backdrive under pressure, and don’t need high-speed operation.
- Choose a linear actuator if your system needs repeatable motion, fast actuation, or integration with control systems.
Not sure? Get in touch! I’ve spent decades helping clients weigh up speed, load, duty cycles, and cost — and I’ll never sell you something that doesn’t fit.
A Few Key Buying Tips
Whether it’s a heavy-duty screwjack or a high-precision linear actuator, here are the big things I always ask customers to consider:
- What’s the load? You’d be surprised how many people guess — get this right.
- What’s your duty cycle? Is it running every day or just now and then?
- Environment — heat, moisture, dust? We’ll spec accordingly.
- Do you need manual or motorised operation? This can affect the whole system design.
Why Buy From LES - Lifting Equipment Store?
We don’t just shift boxes. We solve problems.
At LES - Lifting Equipment Store, we’ve curated a range of top-quality screwjacks and electric linear actuators built for real-world use — in harsh, high-demand environments. We back our products with honest advice, and if you’re unsure, just ask. You’ll speak to someone (maybe even me) who’s been doing this a long time — and knows what works.
Motion Technology Collections
Linear Motion FAQs
A screwjack is a mechanical device that converts rotary motion into linear motion using a lead screw, often for lifting or positioning heavy loads, while a linear actuator achieves similar motion but can be electric, hydraulic, or pneumatic, offering faster and more automated control.
Screwjacks and linear actuators are commonly used in industries such as manufacturing, construction, aerospace, and automation for tasks like lifting platforms, adjusting machinery, or opening heavy hatches.
Yes, both require routine maintenance inclu,ding lubrication, checking for wear, and inspecting seals and connections; frequency depends on usage intensity and manufacturer recommendations to ensure long-term reliability and safety.