What Size Gas Strut Do I Need | Components Direct

What size gas struts Do I need?

Choosing the right size gas strut is essential for ensuring your application operates smoothly, safely and efficiently. Whether you’re working on cabinets, hatches, lids, or industrial equipment, understanding gas strut sizing can save you time, effort and costly mistakes.

Factors to Consider When Selecting Gas Struts

Before selecting the correct Gas Strut size, here are some pointers that will need consideration:
* Gas Struts are also known as Gas Springs

1. Weight of the Application

The weight of the object the gas strut will support is the most important factor. Gas struts come in a variety of force ratings, measured in Newtons (N). Knowing the weight will help determine the force required to lift and hold it securely.

2. Dimensions of the Gas Strut

Gas struts are available in different lengths and stroke sizes. To find the correct size:

Measure the extended length: The total length of the gas strut when fully extended.
Measure the stroke length: The distance the rod moves from the closed to the fully extended position.

3. Mounting Points and Angles

Correct placement of the gas strut’s mounting brackets is critical. Typically:

Attach the gas strut closer to the hinge to reduce the force required.
Ensure the angle allows for smooth operation without overextending.

4. Desired Opening Force

Consider how easily the application should open or close. A gas strut with too much force can make opening difficult, while one with too little force may not hold the application open.

How to Measure for Replacement Gas Struts?

If you’re replacing an existing gas strut:

Record the dimensions: Measure the length of the old strut when fully extended, as well as the stroke length - see diagram below
Check the force rating: Look for a label or stamp on the old gas strut indicating its force (e.g., 500N).
Determine end fittings: Ensure the new gas strut has compatible end fittings, such as ball joints or eyelets.
Weight of the lid: What is the approximate weight of the lid to be lifted in kg's?

See the tables below to check the lid weight and force range for your Gas Strut size.

Notes: Our Gas Struts are commonly referred to by their size. Our most common sizes are 6-15, 8-18, 10-23 and 14-28. The size relates to the diameter of the rod and the tube, for example, 6-15 range will have a rod diameter of 6mm and a tube diameter of 15mm. See the drawing below, other sizes are available, please contact us to discuss your application.

All Standard Vari-Lift, Stop and Stay, Econoloc and Stainless Steels Gas Struts are supplied as Vari-Lift Gas Struts. These struts come fully charged with maximum force in order to allow the customer to freely adjust the force to their specific application. This makes these struts easy to use straight out of the box.

Common Applications for Gas Struts

Cabinets and Furniture: Soft-close doors and hatches.
Car Bonnets and Boot Lids: Safe and secure opening and closing.
Motorbike Panniers: To hold the lid open securely while accessing storage.
Campervans: Pop-top roofs or storage compartments.
Industrial Equipment: Access panels and machine covers.
Bird Hides and Observation Points: Gas struts can lift and hold lids or shutters open, making them silent and easy to use for nature enthusiasts.
Animal Enclosures: Used for hatches or lids in zoos, farms and wildlife parks.
Garden Storage Boxes: Gas struts ensure smooth operation of heavy lids for outdoor storage
Toolboxes and Workstations: Lid support for safe and easy access.
Medical Equipment: Used for adjustable hospital beds, trolleys and operating tables.
Tractor Cabs: Support for windows or access panels.
Aviation Applications: Access panels or storage compartments in small aircraft.

FAQs

1. How do I know what force gas strut I need?

You’ll need to calculate the force required based on the weight and size of the application. A general rule is to multiply the weight by the distance from the hinge to the centre of gravity.

2. What happens if I use the wrong size gas strut?

A gas strut that’s too large or too strong may damage your application, while one that’s too small or weak may not support the weight effectively.

3. Can I replace my gas strut with a different size?

Yes, as long as the force and mounting points are compatible. However, for the best results, match the original specifications as closely as possible.