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Office Chair Assembly Parts

Admin October 10, 2026

Common office chair assembly parts include casters, five-star bases, gas cylinders, seat plates, seats, armrests, backrests, and neck pillows. Here is a detailed introduction:

Casters: Usually installed at the bottom of the five-star base of an office chair, they are the key components that enable the chair to move flexibly. Generally made of high-strength plastic or rubber materials, they have good wear resistance and impact resistance. There are various types of designs, such as silent casters, which can reduce the noise generated during movement and avoid disturbing others; casters with brakes, which can fix the chair's position when needed to prevent accidental sliding.

Five-star base: As the supporting frame of the office chair, it connects the casters and the gas cylinder. Usually made of metal materials such as steel or aluminum alloy, it has high strength and stability and can bear the weight of the human body. The shape design of the five-star base is diverse, with the star shape being common. This shape is evenly distributed and can provide good balance and support.

Gas cylinder: Located between the five-star base and the seat plate, it is the core component for adjusting the height of the office chair. It uses the principle of gas compression and release to adjust the chair's lifting through a control lever. A high-quality gas cylinder should have high safety and stability and be able to withstand high pressure and frequent lifting operations.

Seat plate: Connects the gas cylinder and the seat, playing a role in supporting and fixing the seat. The seat plate usually also has adjustment devices installed on it, such as a recline adjustment mechanism, which allows the user to adjust the tilt angle of the backrest according to their needs, providing a more comfortable sitting experience.

Seat: It is the part that directly bears the weight of the human body, and its material and design directly affect the comfort of use. Common seat materials include sponge and mesh fabric. Sponge seats are soft and comfortable and can provide good cushioning; mesh fabric seats have good air permeability and are suitable for long-term use.

Armrests: Installed on both sides of the seat, they provide support for the user's arms, reducing the pressure on the shoulders and neck. Armrests come in a variety of materials, including plastic, metal, and leather. Their height and angle are generally adjustable to meet the needs of different users.

Backrest: Supports the human back and helps maintain a correct sitting posture. The design of the backrest should conform to the principles of ergonomics, be able to fit the curve of the human back, and provide good support and comfort.

Neck pillow: It can be installed on the backrest to provide additional support for the neck and relieve neck fatigue. The material of the neck pillow is usually soft and comfortable, and its position can be adjusted according to personal needs.