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+44 (0)1604 499 332
Frequently Asked Questions
- What is the difference between a variable gas strut and a fixed force gas strut?
- Fixed force gas struts are set to a specified pressure at our factory and cannot be adjusted. Variable gas struts are supplied to maximum pressure and through the side valve the pressure can be adjusted down to suite.
- I don’t know what force I require in my gas strut
- If this is the case then you should use a variable gas strut, or submit a design service request. You can access our design service here.
- When is it best to use a variable force gas strut?
- Variable force gas struts are useful in a number of situations.
- If you have an application but do not know what force is required.
- If you are replacing a gas strut but do not know what force the old struts is rated to.
- You have an application that has multiple variants where the force requirements are different.
- Variable force gas struts are useful in a number of situations.
- I have a prototype and would like to use a variable gas strut to set the correct pressure, but I do not want to do this every time for the same application?
- Return the variable gas strut to Metrol, we will measure the force in the gas struts (if there are two we take the average across them). You can then order fixed force struts to the specified pressure so no adjustment will be required.
- Do I have to keep removing the strut from the application to reduce the pressure?
- No, with the Metrol variable gas struts, the release valve is located on the side of the cylinder. The strut is fitted to the application in the open position and the pressure can be adjusted in-situ. Our adjustment instructions can be found here.
- How do I adjust the force in the variable gas struts?
- This is done by undoing the release valve for a short period of time. Full instructions can be downloaded here.
- I do not know what size strut I need for my application, how do I go about selecting the correct type?
- The easiest way is to complete and submit the form for our free gas strut design service. You will be given the recommend size and connecting parts, plus a diagram with the fixing positions. Simply click the links provided and you can purchase online. Our gas strut design service can be found here.
- How does the gas strut design service work?
- Fill out all the required details and submit the form (found here). Our engineers will then draw the application and advise the most suitable mounting positions. You will be give a list of parts required and link to how to purchase online. Once you have ordered your goods will be delivered and you can fit according to the mounting positions you have been given.
- Are the parts I require in stock?
- This information is given on the product page (use a screen grab) and is connected to our internal live stock system. Parts in stock will usually be shipped the same day for next day delivery (please order by 3.30pm).
- The part I require is not in stock or has a lead time against it.
- Where a lead time is given it will indicate that the part is currently not in stock, this means we have stock due in to us within this time or that there may be a manufacturing lead time to have this part into stock and ready for shipping. If no stock is shown it may ask you to call, this may be due to variable lead times on these parts ,depending upon manufacturing or supplier lead times.
- I cannot find the part or specification I am looking for
- We can manufacture custom size struts, simply fill in the custom strut specification sheet (found here) and submit, we will reply with a cost and lead time.
- My application is outdoors, do I need stainless steel gas struts and fittings?
- This will depend on the location and exposure. Standard gas struts do have limited corrosion protection in the form of zinc plated end fittings, painted bodies and heat treated (QPQ) rods. It is always recommend to use stainless steel gas struts and end fittings where corrosion can be an issue. This is particularly relevant in marine or costal environments.
- Which way round to I fit gas struts?
- Gas struts should always be fitted rod side down, this means the body should be at the top and. This ensures the oil maintains lubrication on the seal and ensures longevity of the product. Failure to mount in the correct orientation can negatively impact the life of the product. IF IN DOUBT PLEASE ASK. You can find our installation guide here.
- How do I align the end fittings for mounting the gas strut?
- The end fittings must be lined up by fixing the rod side end fitting first and twisting the body clockwise (to ensure the end fitting on the rod end does not come undone) until the correct alignment is obtained. The body side end fitting can then be connected to the application. Ensure all end fittings are fully tightened onto the gas strut, failure to do so could result in damage to strut and possible failure. Installation instructions can be found here.
- How do I remove the ball stud from the ball joint?
- Firstly remove the safety clip, the ball stud can then be pulled out using either a vice or pliers. Once you have replaced the ball joint back into the socket, replace the safety clip securely.
- Why can I not order locking gas struts on line?
- There are a large number of variants for locking gas struts, so these are manufactured to order. For more information on our locking gas struts and how to order, contact our technical sales team on +44(0)1604 499332 or email [email protected]
- What are gas strut safety locking tubes and when and how should I use them?
- Gas strut safety locking tubes are designed to be used on applications where loss of pressure of the struts can cause personal harm or damage to the application. Only one locking strut is required per pair, as the strut extends to the fully open position the locking tube automatically moves to the locked position. The locking tube now provides a mechanical barrier to closing should the gas strut lose pressure. To close the application and compress the gas struts, push the orange part on the locking tube to release. You can find our locking tubes here
- How can I protect the gas strut in outdoor environments that can be subjected to dust, dirt or other contaminants?
- Depending upon the level and type of contamination there are a number of solutions. Dust covers slip over the rod of the gas strut and fit tight against the body and provide protection from dust and dirt entering the gas strut and damaging the seals. Protection tubes protect the rod surface from physical damage such as denting or scratching. Further protection can be added to the gas strut in terms of specialist wiper and seals. For more information please contact our technical sales team on +44(0)1604 499332.
- What are the advantages of me creating an account?
- Ability to reorder at the click of a button
- 24hr access to order information
- Streamlined returns process
- Multiple shipping addresses stored for faster checkout
- Easier to track your orders
- Access to special offers for account holding customers
- Expedites any applications for trade accounts (where applicable)
- My order history has disappeared from my account, can I get it back?
- Due to a recent website upgrade, customer accounts no longer hold information for previous orders made before 27/01/21. This information has not been lost and can be reinstated upon request, contact us now to submit a request. Any orders from this point with any account (new or current) will store order information. This issue affects historical orders only.