Gas Springs
Gas springs deliver full force from the very start of the stroke — something no mechanical spring can do — which is why modern forming dies rely on them.
What are gas springs?
A gas spring is a sealed cylinder charged with high-pressure nitrogen. Unlike a coil spring, force is high at initial contact and rises only modestly over stroke, giving a flatter force curve, and much higher force per unit of space. In dies they power strippers, pads and cam returns.
Types of gas springs
Standard gas springs
Self-contained charged cylinders in standard body diameters and strokes.
Compact / mini types
Short bodies for space-limited pads.
Linked systems
Multiple cylinders hosed to a control panel for equalised force and monitoring.
How to select gas springs
- Initial force required and total at end of stroke.
- Stroke length and closed height available in the tool.
- Mounting style and port position.
- Cycle rate and temperature — affects service interval.
Not sure? Send what you have — a part number, drawing or photo — and our engineering team will confirm the selection.
Frequently asked questions
- What is the advantage of a gas spring over a die spring?
- A gas spring provides its full rated force from the first point of contact and keeps the force curve nearly flat over stroke, while a mechanical spring starts near zero and climbs. That means fewer, smaller force units and better-controlled forming pressure.
- Are gas springs serviceable?
- Yes — they are recharged or resealed at service intervals depending on cycles and operating temperature. Include your cycle rate in the enquiry and we can advise the right specification.
Related components
Die Springs
Die springs pack maximum force into a standard hole — rectangular wire and controlled stress make them the force standard in press tools.
Coil Springs
Coil springs return plates, strip parts and hold pressure in tools and machines. Standardised load classes make replacement fast — if you match the class correctly.
Ejector Pins
Ejector pins push the finished part off the core when a plastic mould or die opens. They cycle millions of times against heat and friction, so material, hardness and fit decide tool life.
Need gas springs?
Tell us the specification, quantity and application — or just send the drawing.