Lubricating Office Chairs

Lubricating office chairs requires selecting solutions based on the type of fault and avoiding common pitfalls. Here are the specific steps:

I. Lubrication Solutions for Different Faults

1. Stuttering/Squeaking During Height Adjustment
   When adjusting the height, if there is stuttering or squeaking, focus on treating the metal friction surface at the connection between the base and the pneumatic rod. Never lubricate the pneumatic rod itself directly, as this may damage the sealing structure. Use a cotton swab to apply a small amount of synthetic hydrocarbon grease (such as PAO base oil) to the metal contact surface to eliminate friction.

2. Inflexible Rotation
   When the seat requires force to rotate or emits friction sounds, apply white lithium grease (recommended viscosity grade NLGI 2) to the底盘转盘轨道 (chassis turntable track). If the turntable is made of plastic, confirm the compatibility of the grease and prioritize the use of food-grade grease.

3. Loose Armrests/Difficult Adjustment
   Disassemble the armrest height adjustment buckle, clean the dust from the internal rack, and use a needle to apply a trace amount of grease (such as extreme pressure grease containing molybdenum disulfide) to avoid excessive application that attracts dust.

4. Backrest Rebound Failure
   The plastic gear set of the synchronous backrest requires food-grade grease (such as silicone grease) to prevent lubricant leakage that may stain clothing. If the gears are severely worn, replace the components instead of merely lubricating them.

5. Poor Rolling of Casters
   Annually, use a cotton swab to apply grease to the wheel axles, first removing any tangled hair or fibers. If the stuttering is severe, add 1-2 drops of light lubricating oil (such as 3-in-1 oil), but immediately wipe off any excess oil stains.

6. Squeaking in Pneumatic Rods, Height Adjustment/Rotation Structures
   Regularly apply a small amount of light lubricating oil (such as sewing machine oil) to the connecting pivot points to eliminate rotation stuttering. If the pneumatic rod leaks air or fails to adjust in height, immediately discontinue use and contact professional maintenance; do not disassemble it yourself.

II. Principles for Selecting Lubrication Materials

• Frequently moving joints (such as turntables, casters): Choose synthetic hydrocarbon grease (PAO base oil), which is heat-resistant and not easily volatile.
• High-pressure parts (such as gear sets): Use extreme pressure grease containing molybdenum disulfide to enhance wear resistance.
• Plastic components: Confirm the compatibility of the grease with the plastic and prioritize the use of food-grade silicone grease to avoid corrosion.

III. Key Precautions

1. Prohibit the use of WD-40: Its rust-removing components will wash away the original grease, leading to increased wear after short-term smoothness.
2. Prohibit the use of cooking oil/motor oil: These oils are prone to oxidation and caking, attracting cockroaches or dust and forming abrasive paste.
3. Avoid excessive lubrication: Apply a thin layer only; excessive lubrication will attract dust and accelerate component wear.
4. Determine the source of squeaking: If the squeaking originates from loose screws or chassis clearance (producing 'play'), tighten the screws or pad with cosmetic cotton to eliminate the clearance; spraying oil is ineffective.

IV. General Maintenance Recommendations

• Moisture and rust prevention: In humid environments, regularly apply a thin layer of anti-rust oil to metal components (such as screws, brackets).
• Operating habits: Gently push and pull during height adjustment and rotation, avoiding frequent forceful pressing or twisting.
• Regular inspections: Monthly check for loose screws and connectors, tightening them promptly; prohibit standing, stepping on, or大幅度后仰 (大幅度后仰 means '大幅度 leaning back') the chair surface to prevent structural deformation.

By applying targeted lubrication and standardized maintenance, you can significantly extend the lifespan of your office chair and reduce noise. For severe faults such as air leakage in the pneumatic rod or fracture of plastic components, contact professional maintenance personnel for handling.