Aline Trading P/L offer their valued customers a gas strut re-charge and sales service.

Backed by one of Australia’s biggest strut suppliers, Aline Trading has available a large range of gas struts & accessories.

Aline Trading, sell predominately into the agricultural, industrial & automotive industries. We offer a friendly professional service and can provide assistance in application design and solutions.

Quality is paramount at Aline Trading. Our struts are manufactured under ISO/TS 16949 that has been developed by the industry, “the International Automotive Task Force” (IATF), to encourage improvement in both the supply chain and the certification process. In fact, for the majority of leading vehicle manufacturers, certification to this specification is a mandatory requirement for doing business.

Our services include

  • New Gas Struts.
  • Re-charging your existing gas struts. (subject to physical design & condition)
  • Ability to set the Gas pressure to suit your requirements.
  • Stainless Steel Gas Struts are available.
  • Wide range of brackets & ends for mounting Gas Struts.
  • We can advise the correct Gas strut for your application.


Frequently Asked Questions.

How does a Gas Strut work?

Gas Struts are a self-contained pneumatic device capable of producing very large forces (0 to 2000 Newtons) from a compacted piece. A typical Gas Strut consists of a shaft connected to a piston, which moves within the cylinder. This contains nitrogen at high pressure with a hole in the piston allowing gas pressure to pass through and act equally on both sides of the piston. The shaft passes through a seal at one end of the cylinder and it is the pressure acting on the shaft cross section which provides the spring its force.

Should a Gas Strut be mounted Shaft up or Shaft down?

Shaft down is the preferred Position for mounting a Gas Strut. An optimum design would permit the support to be oriented shaft down through its entire actuation. There are several reasons for this. In order to achieve the damping or cushion at the end of the Gas Strut’s stroke, the piston assembly inside of the Gas Strut must travel through oil at the end of the stroke. With the shaft down orientation ensures that the oil is in the proper location for damping to occur. Shaft down orientation also ensures that the shaft and sealing components are lubricated with every stroke of the Gas Strut. This reduces seal wear and helps to prevent corrosion.


How does temperature affect the life and performance of a Gas Strut?

Temperature affects Gas Strut’s in two ways, output force could change and increased susceptibility to gas loss. As the temperature of the Gas Strut changes, the internal pressure changes according to the relationship. Therefore, as the temperature increases, so does the internal pressure. As the internal pressure increases, so does the output force.  Very high or very low temperatures can adversely affect the Gas Strut’s ability to retain its gas charge. At very high temperatures, the permeability of the seals increases and the gas molecules may diffuse through the seal more quickly. Our Gas Struts can support and perform reliably at temperatures ranging from 4.5˚C to 150˚C.


What is the expected life of a Gas Strut?

When calculating approximate life of a Gas Strut, one must first determine how much force the support can lose before the application becomes unacceptable. The time it takes to lose this amount of force is considered to be the life of the Gas Strut. All Gas Strut’s lose output force over time. The rate at which force loss occurs varies greatly by application. Many factors affect the rate of force loss, such as: size of the support, orientation, amount of cycles, ambient temperature, vibration, and the geometry of the application. Considering all of the variables, it is very difficult to estimate life accurately without actual testing in the application. Our Struts have surpassed 40,000 strokes in a certified test lab environment.


What type of warranty does Aline Trading offer on our struts.?

Aline Trading P/L offers a 2-year warranty on all of our Gas Struts. Aline Trading P/L  warrants our gas struts  to be free of defects in relation to parts and or workmanship for a period of 2 years from the date invoice. (Estimated duty cycle = 20,000 cycles.)