Office Chair Caster Frame

The office chair caster frame is a core component that supports the chair's movement. Its design must balance stability, flexibility, and adaptability, with common functional expansions and size adaptation solutions as follows:

1. Basic Structure and Accessory Types of Caster Frames

Office chair caster frames are typically constructed from metal skeletons, commonly made of steel pipes or aluminum alloys, requiring high strength and lightweight properties. Some caster frame designs reference wheelchair structures, adopting foldable silver-white skeletons or black custom steel pipe bodies to suit different usage scenarios. For example, the folding functionality and load-bearing design of metal skeletons in wheelchair frames used in rehabilitation equipment accessories can provide structural optimization ideas for office chair caster frames, but dimensions and load-bearing standards must be adjusted according to office scenarios.

2. Functional Expansion Solutions

1. Wheels with Locking Function
   These enable switching between fixed and mobile modes via built-in buttons, suitable for scenarios requiring temporary stability (e.g., drawing, manual operations). Users can lock the wheels by pressing the button to prevent accidental chair movement, enhancing safety.

2. Gravity Wheel Design
   Special mechanisms inside the wheels increase lateral resistance, making movement more strenuous but quieter, ideal for noise-sensitive office environments (e.g., libraries, open-plan offices). The principle involves automatic resistance adjustment through gravity sensing, requiring no manual operation.

3. Fixed Foot Pad Replacement Solution
   Directly remove the wheels and install fixed foot pads to fully immobilize the chair, suitable for scenarios involving the elderly, children, or requiring absolute stability (e.g., medical facilities). This solution requires ensuring the foot pads make flat contact with the ground to avoid tilting risks.

4. Bearing Hollow Wheels
   Hollow designs reduce friction, providing smoother movement, with some models supporting side locking functionality. These wheels are suitable for frequently moved scenarios (e.g., conference rooms, event spaces), but require regular cleaning of dust from the hollow sections to maintain performance.

3. Size Adaptability

The wheel diameters of office chair caster frames are typically 60mm or 65mm, requiring strict matching with the original chair's wheel size during replacement. Mismatched sizes may result in unstable caster frame installation or abnormal chair height, affecting the user experience. Some high-end caster frames support width adjustment to accommodate different chair leg spacings, but operation should follow specific product instructions.

Summary: The design of office chair caster frames must balance functionality and safety. Users can select expansion solutions such as locking wheels, gravity wheels, or fixed foot pads based on actual needs, while strictly verifying wheel diameter and chair leg adaptability to ensure optimal performance.