Office Chair Backrest Noise

The noise from an office chair backrest is usually related to loose connecting components, wear and gaps between components, lack of lubrication in moving parts, issues with the gas lift, improper adjustment of the recline tension, material friction or compression, and environmental factors. Details are as follows:

1. Loose connecting components: Connectors such as screws, bolts, and clips may become loose after long-term stress or wear, causing friction or displacement between components and resulting in noise. This is commonly seen at the connection between the backrest and the base, as well as at the armrest mounting points. Loose connecting screws are the most common cause of chair noise. Screws at various connection points, including the backrest, armrests, chassis, and five-star base, may gradually loosen under the weight of the user and frequent reclining movements. Once gaps appear between components, metal or plastic parts will collide or rub against each other when the user sits down or changes position, producing a crisp 'click' or 'creak' sound.
2. Wear and gaps between components: Over time, normal wear between metal components can create small gaps, most commonly at the connection between the gas lift and the five-star base or chassis, as well as in the turntable track inside the chassis. When the chair is subjected to movement, these gaps cause components to rub against each other, producing a continuous 'squeaking' friction sound. Additionally, the plastic frame components of some low-cost chairs may deform due to aging, resulting in noise. Some chair backrests are equipped with built-in springs or elastic steel sheets, which may shift and rub due to fatigue deformation after long-term use.
3. Lack of lubrication in moving parts: Chairs with a recline function have core moving parts such as metal springs and pivot shafts inside that require lubricating oil to ensure smooth operation. Over time, the lubricating oil may dry out or become contaminated with dust, causing direct dry friction between metal parts and resulting in a 'squeaking' sound during movement. When the piston inside the gas lift lacks lubrication, it may produce a slight 'hissing' sound when under stress.

Inspection and resolution: The source of the noise can be determined through methods such as listening for the sound, visual inspection, manual shaking, and testing specific movements. In the short term, buffer strips can be applied, lubricating oil can be applied to friction areas, and loose connections can be wrapped with soft cloth. In the long term, fasteners should be checked every 3 - 6 months, overloading should be avoided, and the gas lift is recommended to be replaced every 3 - 5 years. If the noise persists and is accompanied by a decrease in stability, it is advisable to contact the manufacturer or a professional to inspect for potential hazards.