Office Chair Wheel Socket

The common types, installation methods, and precautions for office chair wheel sockets are as follows:

Common Base Interface Types

There are three main types of base interfaces for office chair wheel sockets:

• Screw Post Type: The most common type, featuring a threaded metal post with a diameter typically of 11mm or 12mm and a length ranging from 25-35mm, requiring matching with the threaded hole of the caster.
• Pin Type: Composed of a hollow cylinder and an elastic snap ring, requiring a base hole with an inner diameter of 8mm or 10mm, secured by the snap ring.
• Quick-Release Type: Utilizes a push-to-release mechanism for easier installation and removal, but requires confirmation of compatibility between the caster and the base's snap-fit design.

Installation Methods

1. Universal Snap/Plug-in Installation

   • Confirm Hole Matching: Check the shape (round or square) of the holes on the chair base (such as the five-star base or footplate), ensuring the hole diameter matches the diameter of the caster's insertion rod. For example, the Heibaidiao children's chair G502MMA requires insertion into the rear hole of the footplate, while the 886 chair requires insertion into the bottom hole of the five-star base.
   • Vertical Press Installation: Align the caster's insertion rod with the hole and press vertically with even force until a 'click' sound is heard or the rod feels fully embedded, indicating proper installation.
   • Check Stability: Gently shake the caster to confirm there is no looseness or wobbling. If the gap is too large, it may indicate a model mismatch, requiring replacement of the配件 (accessory/part).

2. Screw-Fixed Installation (Minority Design)

   • Initial Fixation: Insert the caster's insertion rod into the base's corner hole.
   • Tighten Screws: Use the screws and tools provided (such as a Phillips screwdriver) to pass the screw through the base's screw hole and tighten it into the caster's fixing part until fully secured.
   • Test Firmness: Push the chair to confirm there is no detachment or abnormal noise.

Installation Precautions

• Size Matching: Most office chair caster screw holes are standard M8 or M10 sizes, but niche models may use non-standard hole diameters. It is recommended to measure the inner diameter and pitch of the hole with a vernier caliper or bring the old caster for comparison when purchasing.
• Tightening Force: Avoid over-tightening screws, especially on plastic chair frames, to prevent hole cracking or thread slippage. Wooden or metal chair frames can be paired with anti-loose washers to enhance stability.
• Hole Repair: If the original screw hole is stripped, it can be repaired by filling with hot melt glue or AB glue, allowing it to cure before re-drilling and installing.
• Operation Specifications: Prioritize consulting the product manual or contacting after-sales service to confirm the steps. If screw fixation is required, ensure all accessories are complete; when inserting directly, apply even force to avoid damaging the hole or insertion rod.