An ergonomically designed chair can be adjusted based on the user's requirements and should be able to adapt to the user's body position. Base is a fundamental component in the manufacturing of chairs. It is the chair base that ensures the stability of the chair, allowing users to sit, bend, or lean comfortably.
When the base of a chair does not conform to ergonomic principles and defined standards, or if it is incorrectly selected based on the chair type, the risk of accidents rises. This can result in non-uniform weight distribution, leading to the chair overturning.
Given that your work chair is where you sit on most of your time, ensuring its comfort is important. Each category of office chair base comes with distinct features and advantages.
Office chair base
An office chair base must provide balance according to the standard weight guidelines specified for the chair. In design and production of these bases, various relevant factors are considered to ensure they are suitable for the functional requirements and usage of office chairs. These bases are designed to allow for attachment of wheels, which enables the movement of chair. This functionality is particularly significant in dynamic office environments where employees frequently alter their chair positions or where several users share a single workstation.
While purchasing a base, it is advisable to consider requirements of your workplace to make the right choice.
Chair base height
The height of a chair is influenced not only by the lift cylinder but also by the base. Standard chair height is essential for maintaining good posture, as it helps to alleviate pressure on the neck, spine, and knees. As a result, users experience less fatigue when using the chair.
Adapting chair components with base
The base is connected to the lift cylinder from its central point, and also is attached to the casters from tip of its feet. It is important to follow the defined standard sizes while producing parts, as any deviation will hinder the connection of the base to other components.
With a standard diameter of 11 mm, the wheel pin is intended to fit into the hole of the base feet. As a result, the bases must be designed to accommodate the wheel, and establish a secure and stable attachment.
With a column diameter of 50 mm in the standard lift cylinder, it is essential that the central cavity of the base is designed in accordance with these dimensions to facilitate installation and attachment of the jack to the base.
In addition, the diameter of the base should be in accordance with the chair's type and its specific use. A larger chair demands a larger base diameter to achieve balance and adaption between the chair's components and the user's weight, which helps prevent turning over when pressure is applied. Some bases are designed for small office chairs, but using them in larger executive or gaming chairs may lead to malfunctions or accidents.
Five-star base
While three- and four-star bases do exist, five-star bases are favored by office chair manufacturers for settings that require greater mobility. The design of the five-star base offers remarkable stability and support, facilitating a complete 360-degree rotation of the chair. The popularity of these five-star bases stems from their significant benefits.
Stability
The base of an office chair provids support and stability. Although a fixed base can decrease the chances of the chair toppling, it undermines the essential purpose of office chairs. As a result, the design of a five-star is a solution. It is the most effective means to ensure stability while facilitating movement.
Increasing the number of base feet leads to a polygon that more closely aligns with the surrounding circle, thereby minimizing the risk of overturning. This design ensures an even weight distribution, which enhances safety during movement and offers greater comfort while changing positions.
Durability
Most chair bases are made of nylon, aluminum, and steel. When the raw material employed in their production are of high quality, these bases are all resilient and capable of withstanding everyday usage. Apart from the raw material, design of the base is a key factor affecting its durability. The seat base should operate effectively by ensuring that the weight of user is evenly distributed while seated.
Occupied space
The stability of the seat is directly related to the distance from the center point to the tips of the base feet. A larger distance correlates with increased stability. Consequently, to ensure balance, the feet of four-star and three-star base are longer than those in five-star configurations.
As a result, the four- and three-star bases take up additional space, causing the diameter of the base to be larger than that of the seat. This discrepancy is not only visually unappealing but also inappropriate for small office spaces where furniture must be accommodated efficiently.
Upon reviewing the design of chair base, particularly the five-star configuration, the benefits of its use become evident. Overall, the five-star base represents the most effective solution for balancing stability, space efficiency, and durability.
Keyhan supplies office chair base made from durable reinforced nylon or steel, catering to all varieties of office chairs, executive chairs, and gaming chairs.
These bases, featuring a standardized design, are compatible with other office chair components, including wheels and chair jacks of different sizes, which meets the diverse needs of users.