Replacement Gas Strutt 525mm 300Nm

FAQ - What are the most common reasons to replace or buy gas struts?

Customers usually need gas struts for one of three reasons:

• Their old struts have worn out and lost lifting power
• They’ve added extra weight (like solar panels or roof racks) and need stronger struts
• They’re installing gas struts on a door or hatch for the first time

FAQ - How do I upgrade to stronger gas struts?

If you’ve added extra weight and the door no longer stays up, you may need stronger struts.

To choose the right upgrade, you’ll need:

• Length Overall
• Length of Travel
• Original force rating
• How much extra weight you’ve added

This lets you keep the same size but increase the lifting force.

FAQ - How do I choose gas struts for a door that never had them?

If you’re installing gas struts for the first time, you’ll need four pieces of information:

• H — Half the height of the door
• G — Weight of the door (in kilograms → convert to newtons)
• L — Mounting distance from the hinge
• Strut length — Usually around 60% of the door height

FAQ - How do I measure the height of the door?

Measure the full drop of the door from hinge to bottom.

Example:

If the door is 1000 mm tall, half of that is:

H = 500 mm

FAQ - How do I weigh the door?

Use a broomstick and bathroom scales.

• Best method: weigh the door halfway along
• If you weigh it at the end, double the reading

Example:

5 kg door → 5 × 10 = 50 N

FAQ - Where should gas struts be mounted?

A good rule is to mount the strut 20% of the door height from the hinge.

Example:

1000 mm door → mount at 200 mm

FAQ - What length gas strut do I need?

A simple rule:

Choose a strut around 60% of the door height.

Example:

1000 mm door → 595 mm strut length

FAQ - How much force do I need?

Using the example measurements (1000 mm door, 5 kg weight, 20% mounting point), the calculation gives:

≈ 72 N

Because struts come in standard sizes, the closest match would be:

100 N in a 595 mm length

FAQ - Can I install gas struts myself?

Gas struts are under high pressure.

If you’re not confident, it’s best to have them installed by someone experienced. Our workshop can do this for you if needed.

Always keep fingers clear of pinch points and wear eye protection.