Adjustable Height Office Chair

An adjustable height office chair is a functional seat that adjusts the height of the seat plate through a lifting and positioning device, commonly found in office settings, with pneumatic types being the most prevalent.

Pneumatic Lifting Principle: Pneumatic adjustable office chairs primarily rely on the movement of the piston rod inside the cylinder to adjust the seat height. The cylinder is typically filled with inert gases such as high-purity nitrogen. When the seat is raised or lowered, the gas pressure inside the cylinder changes, pushing the piston rod up or down, which in turn raises or lowers the seat plate to meet the height requirements of users of different heights.

Common Models and Features:

• JD.COM Z5 Pro Ergonomic Chair: This is an adjustable office chair featuring a flexible rotating lumbar support that can rotate 20° flexibly. It also has an upgraded spinal-supporting double backrest with three levels of lumbar support modes, paired with a 50mm adjustable backrest, allowing users to precisely find their comfortable support zone. The seat cushion is made of high-elasticity pressure-relieving material with a thickness of 10.5cm. The 2D large-curved neck pillow, combined with wide armrests and a 140° large recline angle, provides users with a comfortable sitting experience.
• Sihoo B300Pro: This is also a popular adjustable office chair with high adjustability. The chair legs are equipped with a Class 4 (SGS4/BIFMA) pneumatic rod, ensuring quality. The footrest can be locked and retracted, allowing users to adjust it according to their needs. The backrest is connected to the base with a specific screw installation method, ensuring the stability of the chair structure.

Safety Precautions: Pneumatic adjustable chairs using inferior pneumatic rods, such as those with insufficient nitrogen purity or thin tube walls, pose an explosion risk. To reduce this risk, choose products with specific safety certifications and explosion-proof steel plate designs. Additionally, avoid frequently raising or lowering the seat during use, as frequent operation may accelerate wear on the pneumatic rod and increase safety hazards. Furthermore, do not disassemble the chair yourself to avoid damaging its internal structure and affecting safety performance.