Gas spring analysis

[Korean] Gas spring Product Study

[Korean]

Gas springs on the market are similar in appearance, only the difference in size or force value. Why the life test specifications are various from 10,000 times to 180,000 times. Following taking Peir’s gas spring as an example for product study.

The life of a gas spring is determined by the components and processes used. Peir’s standard gas springs all have a lifespan of 50,000 cycles, but if a higher standard is required in certain applications, it can also be achieved by upgrading the interior parts.

Peir has introduced exceptional German standard production lines and test equipment, to meet the high-quality requirements of overseas customers in America, Canada, and European countries. Our quality performance is always less than 100 ppm on the customer side. (Click to see what is ppm)

For key components, like Rod, Cylinder, and Seal ring, use the same supplier as top German brands. Use 99.999% purity nitrogen, brand name is AirProducts from the USA.

Following is the introduction of technical details on the critical parts:

Gas spring components

Tube
-Treated with a highly corrosion-resistant coating.
-Pass 500 hours salt spray.
-Environmental friendly painting.
Piston rod
-Superior rod seal durability.
-Induction-hardened.
-Black nitride surface(QPQ) or Specialty chrome plated rod.

Piston unit
-Super precison CNC machined.
-Lubricated sealing.
-Temperature range -30 to+80 ℃.

[Korean] How to calculated the required gas spring force?

[Korean] In our last video, we introduced how to measure a gas spring, how to measure two lengths and two diameters. And normally, we can see the force on the surface of the gas spring. But we can also know the required gas spring force by calculation.

Next, let me introduce how to calculate the force.

As you can see in the picture,
P, means the center of gravity. G, means the gravity,normally, gravity equals weight multiplied by 9.8 (G=mg, g=9.81). L, means the distance between hinge and P. D, means the distance between hinge and the gas spring, and the gas spring is in an extended state. N, means the number of gas springs
Gas spring force calculation
Now let’s take an example.
If the weight is 20kg, L is 500mm, D is 300mm, there are 2 gas springs
Gas spring force calculation
Next, Let’s change the condition,
If the gravity is 400N, L is 400mm, D is 200mm, there is 1 gas spring, can you calculate the right gas spring force?

(55) Lisa, Peir International Rotary Damper Gas Spring | LinkedIn

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