Reasons for Office Chair Repair

The common reasons for office chair repair can be mainly divided into the following categories:

1. Pneumatic rod (gas spring) failure
The pneumatic rod is the core component for the height adjustment function of an office chair. Its failures usually manifest as automatic sliding down, inability to rise, or unstable height adjustment. Common causes include wear of the internal sealing ring leading to nitrogen leakage, or the entry of impurities affecting pressure stability. If the pneumatic rod is severely damaged, it may also cause the entire chair to tilt. Such failures are more common in chairs with a long service life or those that are frequently adjusted in height.

2. Chassis or connector failure
As the supporting structure, if the chassis breaks or ages, it can cause the chair to wobble or even collapse. Loosening at the connection points of the five-star base or jamming of the levers and knobs that control height adjustment can also directly affect functional stability. For example, a lever that has worn out from long-term use may not be able to effectively lock the height adjustment position.

3. Loose screws
If the fixing screws on parts such as the armrests and chassis are not tightened regularly, they may gradually loosen due to vibration or external force. This not only produces abnormal noises but also causes the chair to shift or tilt locally, affecting the user experience. Such problems can usually be solved by simple tightening, but long-term neglect may exacerbate structural damage.

4. Uneven ground or worn chair feet
If the ground where the chair is placed is tilted or uneven, or if one of the chair feet wears unevenly due to long-term friction, the chair will naturally lean to one side when sat on. This situation needs to be resolved by adjusting the flatness of the ground or replacing the chair feet and is not directly related to the quality of the chair itself.

5. Hydraulic system failure
Aging and air leakage of the hydraulic rod, internal blockage, or insufficient hydraulic oil can cause difficulties in height adjustment or a decrease in support force of the chair. Such failures are more common in low-end products or chairs that have not been maintained for a long time and require repair by replacing the hydraulic rod or replenishing hydraulic oil.

6. Mechanical structure problems
If the seat adjustment linkages are oxidized or lack lubrication, it may cause difficulties in height adjustment; the entry of foreign objects into the tracks or damage to gears/chains can lead to operation failure. Such problems are common in manually adjustable chairs and require cleaning of foreign objects or replacement of damaged parts.

7. Electrical and control component failures
Chairs with electric adjustment functions may experience abnormalities in functions such as height adjustment and tilting due to blown fuses, loose wiring, or failures of switches or motors. Such failures require professional maintenance personnel to detect the circuit or replace electronic components, and users should never disassemble them on their own.