All measurements are from centre of hinge to centre of fitting mount. Follow the four steps to ensure optimal fitting:
1. Open lid to desired angle.
2. Fit cylinder end of gas strut to lid as per fitment & pressure guide.
3. Whilst in open position swing shaft end of gas strut to centre of fixed mount and attach.
4. Ensure lid is able to open & close without restriction.
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. In the instance where the strut has been incorrectly fitted upside down and there has been a loss of pressure or failure, your warranty will be affected.
How does temperature affect the life and performance of a Gas Strut?
Temperature affects Gas Struts 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 Strutss can support and perform reliably at temperatures ranging from 4.5ËšC to 150ËšC.
What is the expected life of a Gas Strut?
When calculating approximate life of a Gas Spring, 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 Struts 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.