Which lubricant should I use for different types of furniture casters?

Casters require a dedicated lubricant to prevent sticking, corrosion, and material degradation.

Bearing casters (most common):

Ball/needle bearings (PU/rubber/nylon wheels): Lithium-based grease is recommended. It offers a wide temperature range (-20°C to 120°C), strong adhesion, rust and dust resistance, and does not corrode the metal/wheel body. Apply to the bearing gaps and allow to penetrate. Reapply lubricant every 1-2 months.

Precision bearings (such as those for silent chairs): Silicone oil (low viscosity) is recommended. It is odorless, quiet, and does not stain the wheel body or floor.

Bearingless sleeve casters (lightweight and low-cost):

Plastic/metal sleeves: Motor oil or sewing machine oil (low viscosity) is recommended. It has good fluidity, penetrates gaps, reduces dry friction, and is low-cost. Reapply lubricant every 2-3 weeks. Avoid thick greases (which tend to attract dust).

Special Material Considerations:

Rubber/PU Wheels: ❗Mineral oil-based and sulfur- or chlorine-containing lubricants are prohibited (causing swelling, aging, and cracking). Safe choices: Lithium-based grease or silicone oil.

Stainless steel brackets (humid environments): Rust-resistant grease (containing zinc or molybdenum) is recommended. It lubricates and prevents rust, suitable for kitchens and bathrooms.

Additional Scenario Information:

Quiet Environments (Bedroom/Study): Silicone oil or food-grade grease (odorless) is preferred.

Outdoors/Balconies (dust and rain): Extreme-pressure lithium-based grease is preferred (water and dust resistant, strong adhesion).

Core Principles:

Avoid "universal" lubricants and strictly observe the compatibility of the lubricant with the wheel material (mineral oil is not recommended for rubber/PU).

Select lubricant based on bearing type (ball bearing/sleeve) and application (quiet, humid, outdoor).

Lubricate at the recommended frequency to ensure effectiveness and extend life.