Office Chair Lifting Stuck

The following methods can be used to solve the problem of office chair lifting getting stuck:

Issues Related to the Pneumatic Rod The pneumatic rod is the core component for the lifting of an office chair, and its malfunction is a common cause of sticking.

• Treatment of Metal Friction Surfaces: If the pneumatic rod itself cannot be lubricated but gets stuck or makes abnormal noises during lifting, it is necessary to focus on checking the metal friction surfaces at the connection between the base and the pneumatic rod. Such problems are usually caused by direct contact between metal parts and can be solved by cleaning the contact surfaces and applying a small amount of special lubricating grease (such as silicone grease). Avoid using oil-based lubricants.
• Troubleshooting Pneumatic Rod Problems: If there are oil stains or signs of air leakage on the surface of the pneumatic rod, it indicates that the internal seals are damaged or nitrogen is leaking, and a new pneumatic rod needs to be replaced directly. If the threaded rod is stuck, spray WD-40 lubricant onto the adjustment knob or threaded rod and repeatedly turn the adjustment knob until it loosens.
• Repair of Aged Components: After more than 3 years of use, the pneumatic rod may experience increased resistance due to the hardening of the seals. You can first try adjusting the top knob (some models are equipped with a resistance adjustment ring, and turning it counterclockwise by 1-2 turns can reduce the downward resistance) or use a cotton swab to apply silicone grease to the telescopic rod. If there is an air leakage sound when pressing, the pneumatic rod needs to be replaced.

Insufficient Lubrication and Friction of Components Long-term use can cause the lubricating grease inside or outside the lifting rod (pneumatic rod or hydraulic rod) to lose its effectiveness or become contaminated with dust, leading to sticking or abnormal noises.

• Lubrication Treatment: Use a special lubricant such as WD-40 rust-preventive lubricant and evenly apply it to the metal shaft surface of the lifting rod. Then repeatedly lift and lower the chair several times to allow the lubricant to fully penetrate. This method can significantly improve smoothness, but avoid applying too much lubricant to prevent oil stains from remaining.

Problems with Other Connectors Loose or damaged connectors can also indirectly cause the lifting to get stuck.

• Screw Tightening: Long-term use may cause the screws between the seat bottom tray, the five-star foot and wheels, and the chassis to loosen. Use tools such as an Allen wrench to check and tighten all connecting screws one by one to eliminate abnormal noises and restore stability.
• Inspection of Damaged Components: If components such as the connection buckles between the seat and the chassis and the rotating chassis have cracks, deformations, or damage, they need to be tightened or replaced according to the degree of damage. Such problems are usually accompanied by seat instability or abnormal shaking and need to be dealt with in a timely manner to avoid safety hazards.