BDL Office Chair Base
The BDL office chair base is a core component that enables office chairs to perform various functions. There are multiple types, each with its own characteristics, and the choice should be made based on specific needs.

Common Types and Characteristics
- Single-spring base: It is relatively easy to use in the first half, allowing users to quickly enter a comfortable state. However, it becomes strenuous in the latter half, with a relatively short stroke and uneven spring force distribution. Prolonged use of office chairs with this type of base can easily lead to physical fatigue and is not suitable for those who need to sit for long periods.
- Double-spring base: Compared to the single-spring base, it has an additional spring to assist in controlling the force. This improvement effectively solves the problem of uneven resistance during reclining, enhancing the chair's stability at all stages of use and providing a more comfortable sitting experience. It is a common type in mid-to-high-end office chairs.
- Self-adaptive base: Its unique feature is the ability to automatically adjust the reclining force based on the user's weight. However, when the weight exceeds the normal range, the accuracy of adjustment is affected, and comfort is compromised accordingly. It is a good choice for users with a normal weight range who seek convenient adjustment experiences.
- Fiberglass base: Also known as a dual-fiberglass spring base, the deformation of the chair back during reclining accounts for a very small proportion of the entire stroke, with uniform reclining resistance. However, due to differences in craftsmanship and materials among manufacturers, the experience of fiberglass bases varies greatly, and careful selection is required when purchasing.
Core Functions
The base also integrates a reclining resistance adjustment function, which can be adjusted according to different weights to ensure that people of different weights can obtain appropriate reclining resistance. The reclining lock function is divided into multi-gear or stepless types, meeting users' needs for fixing the chair angle in different scenarios. The reclining mechanism is one of the core functions of the base. The ordinary reclining base is relatively basic; the synchronous reclining base provides the most scientific and comfortable dynamic support and is the preferred choice for long-term office work; the forward-tilting base is suitable for users with special work posture requirements.
Well-known Brands
Well-known domestic base brands include Zhongtai and Yongyi, while international brands include Donati and Boke. When purchasing an office chair, the design and function of the base have a significant impact on the sitting experience during long periods of sitting. The appropriate base type should be selected based on individual needs.



