In addition to designing and producing die-casting molds, industrial production. We manufacture a wide range of semi-finished products such as chair air bars for various industries( the gas lift of this swivel chair).
What is a gas lift for a chair base?
The function of the gas lift is to control the lifting and lowering of the swivel chair through the up-and-down movement of the piston in the cylinder. In this way, it can adapt to people of different heights and the comfort level of sitting in a chair.
How does it look like after gas lift assembled with chair base?
Cooperate with all kinds of pressing the chair feet, and the office chair swivel base. Suitable for all kinds of office swivel chair product manufacturers and buyers. Below are gas lifts and chair legs, the effect after assembly. Gas lift stuck in the chair base.
What’s the certification and test requirement of gas lift for chair base?
There are four grades of swivel office chair base gas lift. The grade is based on the wall thickness of the outer tube and the inner tube. There is also SGS, TVU & BIFMA certification. Then there is the 120,000 spin test. 100,000 shock tests.
The difference between each grade of gas lift.
| Gas lift rating. | SGS, TUV, BIFMA certification | Thickness of outside tube & inner core | Internal air pressure ±2kg | 120,000 rotation test | 300 lb Push and pull test | 100,000 shock impact tests |
| Grade 1 | X | Outer thickness: ∅50 x 1.0mm Inner core size: ∅28 x 1.2mm | 48kg | X | X | X |
| Grade 2 | Partially passed. | Outer thickness: ∅50 x 1.2mm Inner core size: ∅28 x 1.5mm | 48kg | Partially passed. | Partially passed. | Partially passed. |
| Grade 3 | √ | Outer thickness: ∅50 x 1.5mm Inner core size: ∅28 x 2.0mm | 48kg | √ | √ | √ |
| Grade 4 | √ | Outer thickness: ∅50 x 2.0mm Inner core size: ∅28 x 2.5mm | 48kg | √ | √ | √ |
How to choose the safty gas lift?
The higher the air pressure rod level of the chair foot, the thicker the tube wall material and the better the safety performance. Grade 3 and 4 have the best gas lift, and the safety is also good. Need to have a steel stamp.
Stamp On The Gas Lift Optimized
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