Office Chair Base and Wheels

The core features and selection points of office chair bases and wheels are as follows:

Base Function and Design
The office chair base serves as the "control hub" of the seat. Taking a four-position locking base as an example, its core function is to adjust and fix the reclining angle of the chair back through a mechanical locking mechanism. Users can select different positions based on work requirements (such as desk work, meetings, or rest) to lock the chair back at a specific angle, thereby maintaining the natural curvature of the lumbar spine and reducing fatigue from prolonged sitting. This design balances flexibility and stability through precise mechanical structures, ensuring reliable support for the seat in various postures.

Wheel Material and Performance Differences

1. PU Wheels (Polyurethane Material)

   • Advantages: φ60MM black PU wheels are a common configuration. Their polyurethane material produces significantly less noise than traditional nylon wheels when rolling on hard floors (such as tiles or marble) and has less surface friction, making it less likely to scratch the floor. Additionally, PU material has elastic cushioning properties that reduce vibration transmission during movement, enhancing comfort.
   • Wear Resistance: They wear more evenly during long-term rolling, have a longer lifespan, and are suitable for high-frequency movement scenarios.

2. Nylon Wheels

   • Suitable Scenarios: Nylon wheels are harder and suitable for smooth hard floors like tiles, but they may produce significant noise when rolling and can leave scratches on wooden floors.
   • Limitations: Although they have strong wear resistance, long-term use may cause floor wear due to their hard material.

3. Rubber Wheels

   • Protective Properties: Rubber material is soft and has low friction on wooden floors, effectively preventing scratches or indentations, making it suitable for wooden floor environments in homes or offices.
   • Quietness: They produce less noise than nylon wheels when rolling, but their wear resistance is relatively weaker, requiring regular inspection and replacement.

Structural Advantages of Universal Wheels
Universal wheels consist of five small wheels equipped with 360-degree rotating bearings, offering high sliding flexibility and enabling easy multi-directional movement. This design is particularly suitable for scenarios requiring frequent posture adjustments or seat movement (such as meetings or collaborative work), but attention should be paid to the matching of wheel material with the floor: nylon universal wheels are suitable for tiles, rubber universal wheels better protect wooden floors, and PU universal wheels offer both quietness and wear resistance.

Selection Recommendations

• Hard Floors (Tiles/Marble): Prioritize PU wheels or nylon wheels for a balance of quietness and wear resistance.
• Wooden Floors: Recommend rubber wheels or PU wheels to avoid scratches and reduce noise.
• High-Frequency Movement Needs: Choose universal wheel structures to enhance flexibility.