Adjustable Office Chair Base

Here is information on the disassembly, repair, purchase, and pricing of adjustable office chair bases:

Disassembly and Repair Methods If the adjustable office chair base is tilted to the side or cannot be raised or lowered, follow these steps for disassembly and repair:

1. Initial Separation: Turn the chair upside down and place it on the ground. Use tools to remove the screws securing the bottom tray, separating the tray from the seat cushion.
2. Disassemble the Base: Further disassemble the base, gas lift, and chair legs. Observe the connection status of each component to determine the fault location (such as gas lift leakage or base spring breakage).
3. Separate the Base from the Gas Lift: Hold the base upside down with one hand and tap the connection between the base and the gas lift with a rubber mallet. If a rubber mallet is not available, use an iron hammer wrapped in a towel to tap several times to separate the base.
4. Replace Components: Replace the corresponding components (such as the gas lift, spring, or base body) according to the type of fault. Reassemble and test the functionality.

Purchase Recommendations Ergonomic chair bases under 500 yuan come in various designs and should be selected based on functional needs:

• Jingzao Z5 Pro Single-Torsion Spring Base: Equipped with two control levers, the front lever adjusts seat cushion height, and the rear lever controls recline. It has a slender shape, no伸缩度 (伸缩度 may mean '伸缩性' or '伸缩能力', here translated as '伸缩能力' for better understanding, but if it's a specific term, it should be adjusted accordingly; in this context, it seems to imply no telescoping ability), and no resistance when reclining. The backrest is directly inserted through holes, suitable for users with a limited budget seeking basic functionality, priced within the range of 300-400 yuan.
• Multifunctional Base: Supports rotation, height adjustment, and recline adjustment, offering comprehensive functionality, priced at approximately 92 yuan, suitable for scenarios requiring flexible sitting posture adjustments.
• Specially Designed Base: Such as bases with explosion-proof functionality, usually paired with 4-way adjustable lumbar supports, 3-level gas lifts, and nylon legs. When installing, use the shortest 4 screws for fixation, providing higher safety, suitable for users with high safety requirements.

Price Reference Prices vary significantly depending on the type and material of the base:

• Die-Cast Aluminum Alloy Tray: Priced at approximately 38 yuan, with a sturdy material, suitable for users with a low budget and basic durability needs.
• Multifunctional Base: Priced at approximately 92 yuan, with rich functionality and high cost-effectiveness.
• Explosion-Proof Base Set: Paired with lumbar supports, gas lifts, and other accessories, prices vary depending on the configuration but generally cover basic needs within 500 yuan.

When disassembling and repairing, pay attention to safety and avoid damaging components through violent disassembly. When purchasing, consider the usage scenario, budget, and functional needs comprehensively.