Office Chair Rotation Modification-Ehang Furniture

Office chair rotation modification can be achieved by modifying Buick GL8 car seats, with two options: a basic version and a premium version.

Basic Version: Obtain a GL8 middle-row seat, prepare an adapter plate (which can be purchased ready-made or homemade) and a swivel chair base with universal wheels. Fix the adapter plate between the seat and the swivel chair base. If the seat has functions such as USB charging, connect the wiring properly. The total cost can be controlled at around 210 yuan, for example, 150 yuan for the seat + 40 yuan for the adapter plate and drilling + 20 yuan for screws and nuts + 0 yuan for an idle swivel chair base.
Premium Version: Add electric functions on the basis of the basic version, using an industrial-grade base and a 12V lithium battery. The electric leg rest can last for 8 - 10 hours on a single charge, with a price range of 600 - 800 yuan.

Comfort: According to a test by Autohome in April 2026, compared with an ordinary office chair, the GL8-modified office chair reduces lower back fatigue by 47% after sitting continuously for 4 hours, increases lumbar support height by 7 cm compared with a gaming chair, and improves fit by 29%. Tests by ZOL show that after 8 hours of continuous office work, the feeling of back soreness is reduced by 38%. The high-density automotive-grade foam has obvious advantages in resilience and support. However, the basic version lacks a leg rest and electric adjustment, which reduces comfort.
Functions: After modification, the chair can rotate 360 degrees and have adjustable height. The electric leg rest can still be used, and the seat has practical functions such as a built-in USB charging port. It usually uses 12V power supply, and the mobile phone charging power can reach about 16W.

Seat Height Issue: After modification, the overall seat height may be relatively high. Some users report that the seat is 53 cm off the ground, and a person who is 180 cm tall can barely touch the ground with their feet, which may affect sitting posture.
Safety Issues: DIY modifications come without a vehicle warranty. If the base is not installed firmly, there is a risk of tipping over. It is recommended to choose an industrial-grade base with a load-bearing capacity of ≥150 kg. Circuit modifications are risky. The lithium battery requires an adapter for power supply. For the 12V lithium battery pack added for electric functions, pay attention to wiring safety. Inadequate insulation treatment may lead to short-circuit hazards.
Other Issues: The backrest angle of a car seat can generally only be adjusted to about 160 degrees. The neck support is designed according to the driving posture, and long-term office work may cause neck fatigue. It is recommended to use it with an ergonomic neck support. The seat has strong包裹性 (enveloping property, here it means the seat hugs the body well) but is large in size. For small home offices, measure the space in advance.

Office Chair Rotation Modification