The New Class 4 Gas Lift
Why Gas lift cylinders are so important in Ergonomic Chairs ?
The gas lift cylinder enhances the comfort of seating and is ergonomics. With the gas lift cylinder, the chair seat can not only be rotated left and right, but also be adjusted in height. What’s more, a gas lift cylinder is light, which also reduces the overall weight of the whole chair.
Gas lift cylinder sizes and classes
In general, the universal gas lift cylinders size includes an outer tube of ∅50 diameter and an inner tube of ∅28 diameter.
According to the thickness of the inner and outer tube walls of the gas lift cylinder, the gas lift cylinder is generally divided into four classes. You may wonder how to classify them. In fact, if it is thicker, its grade is higher and its quality is better.
Among the four classes, Class 2 and Class 3 are the most commonly used now.
However, in order to enhance the stability of the chair and the durability of the gas lift cylinder, we strongly recommend the Class 4 gas lift cylinder. Ours have a 1.5mm outer tube wall and a 2.0mm thick inner tube. Most significantly, it adopts hydrogenation technology to enhance the inner tube hardness.
We always strive to offer you solutions which has the outstanding added value. That’s why we introduce the new Class 4 gas lift to our range (QPQ series)
Thanks to its enhanced features, it boasts the best performance currently among the gas lift cylinders available on the market. And it represents the best value for money.
Our Class 4 gas lift is available in the four standard sizes: S65MM, S85MM, S100MM and S120MM

QPQ Series – customized
1. XYM-65
2. XYM-85
3. XYM-100
4. XYM-120
65mm
85mm
100mm
120mm
210mm
230mm
245mm
265mm
275mm
315mm
345mm
385mm
160mm
180mm
195mm
215mm
60mm
60mm
60mm
60mm
Customized size is warmly welcome! Our technical team will give the best advice based on your chair.
Class 4 gas lift weight limit
The class 4 gas lift is known to be durable, extremely strong and capable of supporting loads. While Class 3 gas lift is ideal for loads as light as 150kg, Class 4 is suitable for loads up to 250kg.
If you are designing a heavy duty chair, then Class 4 gas lift is your prefect option.
What’s more, our Class 4 gas lifts which have been through various kinds of professional tests for chair parts come with a 5 year quality warranty. To know more about the testing for our gas cylinders, you can visit our Gas Cylinder product page.
Because the Class 4 gas lift bears more weight and is stronger. You can also use it to replace a damaged gas lift to keep your chair functioning properly. And to replace an old gas lift can keep your chair functioning better.
Related Posts

TOP 3 Metal Chair Bases in 2022
TOP 3 Metal Chair Bases in 2022 Everything has its own trends, and metal chair bases are no exception. As a senior manufacturer and wholesaler of office chair parts, we have always followed or even led the trend of the chair part industry. In this article, we will introduce you to the new trends in

OEM Gaming Chair
OEM Gaming Chair 1. What is OEM gaming chair? Nowadays, gaming chairs are kind of an expression of personalization. It is their cool and unique appearance that makes it popular with the young consumers. And to maintain this advantage of the gaming chair, some manufacturers may offer the service of OEM GAMING CHAIR. For some

Butterfly Tilt Mechanism
Butterfly Tilt Mechanism 1. What is a butterfly tilt mechanism? The butterfly tilt mechanism is actually an office chair tilt mechanism. Because its shape is like a butterfly with outstretched wings. People tend to use the butterfly tilt mechanism as its common name. And this makes this kind of tilting mechanism easy to identify. In

The Advantages of Nylon Chair Base
The Advantages of Nylon Chair Base Nylon Base — Best one for Gaming Chairs Under $150 What would be the best kind of base for gaming chairs? The nylon chair base is definitely the perfect one. Nowadays, more and more younger consumers are keen on gaming chair. In response to this trend, the market has launched