Office Chair Base - Iron

There are various types of iron bases for office chairs, and prices vary depending on the material, design, and functionality. Here is a detailed introduction:

1. Black Circular Universal Rotating Base
This type of base usually has a circular design, equipped with universal wheels that support 360-degree rotation. It is suitable for bar stools or office scenarios that require flexible movement. Its price is approximately ¥23.0. The material is mostly ordinary steel, and the surface is treated for rust prevention, making it suitable for users with a limited budget and low weight-bearing requirements.

2. Electroplated Five-Star Footrest
The five-star footrest is the most common type of base for office chairs. It consists of five legs arranged in a star shape, providing stable support. The electroplating process enhances the surface's corrosion resistance and extends its service life. The price range for this type of base is wide. For example, the price of a basic electroplated five-star footrest is ¥23.75, while models made of thickened steel or alloy can cost between ¥46.0 and ¥57.0. High-end models may feature thicker legs or a heavier design to improve weight-bearing capacity (usually supporting over 100kg).

3. Four-Star Footrest with Detachable Design
Some bases adopt a four-star structure (four legs) and cost approximately ¥42.0. They are suitable for scenarios with limited space or slightly lower stability requirements. The detachable design facilitates transportation and storage, but attention should be paid to the firmness of the connection parts. These bases are mostly used in economical office chairs and may be made of ordinary iron or lightweight alloys.

4. Material and Process Differences

• Ordinary Steel: It has a relatively low price (e.g., ¥14.5-¥15.96) but is prone to rust and requires regular maintenance.
• Electroplated Steel/Alloy: By isolating air and moisture with an electroplated layer, it offers excellent rust resistance and a moderate price (¥23.75-¥57.0).
• Thickened Design: With thicker legs or an increased base weight, it improves stability but comes at a higher price (e.g., a bread-shaped five-star footrest at ¥57.0).

5. Functional Expansion
Some high-end bases integrate pneumatic height adjustment rods or tilt adjustment functions, but they require additional accessories and may exceed the price range of basic models. Users need to choose a compatible base type according to the overall design of the office chair.

Purchase Recommendations:

• Prioritize electroplated or stainless steel materials to balance durability and cost.
• Determine the number of legs based on the usage scenario (five-star legs offer greater stability, while four-star legs save space).
• When there are high weight-bearing requirements, choose a thickened design or an alloy model.
• Pay attention to the compatibility of the base with the office chair's gas rod and wheels to avoid installation problems.