What Are Gas Springs?

Gas springs are closed systems consisting of a nitrogen-filled cylinder, a piston rod, and seals. They generate force through the pressure difference between the internal gas pressure and the atmosphere. This design enables controlled movement and uniform force distribution.

Construction and Materials

Gas springs are composed of:

Cylinder: Made of nitrided steel or stainless steel to withstand high pressure

Piston rod: Made of stainless steel or nitrided steel

Seals: Ensure tight sealing and prevent gas leakage

The dimensions of a gas spring, such as stroke length, cylinder diameter, and piston rod diameter, influence the force and travel of the spring.

Characteristics and Functionality of Gas Springs

Consistent Force

Gas springs provide a nearly constant and slightly increasing force over the stroke. This sets them apart from mechanical springs and makes them ideal for applications requiring uniform force.

Adjustability

Some gas springs offer adjustability via a release valve (V-Series), allowing the internal pressure to be fine-tuned for specific requirements.

Damping

All our gas springs feature end-position damping to ensure smooth motion, for example when opening and closing hatches or lids.

Applications of Gas Springs

Gas springs are used in a wide range of applications, including:

1. Automotive Industry:

   • Tailgates: Easy opening and closing

   • Hoods: Stabilization and controlled movement

   • Camper vans: Beds, flaps, windows, and doors

2. Furniture Industry:

   • Adjustable beds or loungers: Comfortable positioning

   • Cabinet flaps in kitchens: Smooth opening and closing

3. Mechanical Engineering:

   • Production lines or machine covers

4. Hatches and Doors:

   • Assist with manual force when opening and closing

   • Hold positions accurately

Selecting the Right Gas Spring

Key Criteria

Choosing the right gas spring is essential for system functionality. The key considerations include:

1. Force Requirements:

   • What force is needed to move the system?

   • Is a pre-set or adjustable force required?

2. Geometry:

   • What should be the length of the gas spring in extended and compressed states?

   • Do you need threaded end fittings with accessories (N-Series, V-Series, S-Series, X-Series) or gas springs with welded eye ends (W-Series)?

3. Material Requirements::

   • Are there high temperature conditions?

4. Mounting Type:

   • Is there enough space for the gas spring?

   • Which mounting accessories are required?

Tips for Care and Maintenance

Gas springs are largely maintenance-free, but the following tips can help extend their service life:

• Avoid lateral loading: Ensure the spring is only loaded axially
• Prevent damage: Protect the piston rod from scratches and dirt
• Piston rod orientation: Mount the gas spring with the rod pointing downward where possible to ensure regular lubrication of the seal
• Regular inspection: Check the gas spring for leaks or performance loss