Assembly of Office Chair Accessories

Taking the Deli office chair 91029 as an example, the assembly of office chair accessories should follow the steps below, with attention to key details:

I. Basic Accessory Installation Steps

1. Ball Installation
   The ball is a crucial component connecting the office chair base to the five-star foot. Press it into the internal structure. Ensure the ball is fully embedded during installation to prevent looseness that could lead to poor sliding. Some models of balls require the use of lubricating grease to reduce friction and extend service life.

2. Screw Installation Direction
   When installing screws, strictly follow the direction indicated by the arrows. For example, some screws need to be screwed in vertically, while others require tilted fixation. Incorrect directions may result in unstable structures or damaged threads. It is recommended to adjust the electric screwdriver to low torque mode to prevent slipping.

3. Caster and Lift Rod Installation
   Casters (universal wheels) are usually fixed to the bottom of the five-star foot with clips or screws. Ensure each wheel is properly installed and rotates freely. Insert the lift rod into the center hole of the base, rotate it to the locked position, and test whether the pneumatic rod's lifting function is normal to avoid air leakage or jamming.

II. Special Accessory Installation Precautions

1. Headrest Installation (e.g., A03 Computer Chair)
   The headrest should be fixed to the top of the chair back with short screws. Align the holes before installation and avoid excessive force that could crack the plastic parts. Some headrests support angle adjustment. After installation, test whether the adjustment function is smooth.

2. Leg Accessory Installation
   If the chair is equipped with adjustable armrests or leg rests, assemble them in the order specified in the instructions. For example, the armrests should be fixed to both sides of the seat first and then connected to the chair back. Ensure the screws are tightened and symmetrical to avoid tilting that could affect the user experience.

III. Accessory Selection and Compatibility

Office chair accessories come in a variety of types, and compatible parts should be selected according to the model:

• Reinforcing Brackets: Such as stainless steel corner braces or triangular fixing brackets, which are suitable for enhancing the structural stability of the chair. They need to match the original chair's hole positions.
• Five-Star Foot Material: Steel-reinforced five-star feet have stronger load-bearing capacity, but it is necessary to confirm that they match the size of the pneumatic rod.
• Rotating Base: For disassembled four-claw bases, check the lubrication of the rotating bearings to avoid abnormal noises or jamming.

Tip: Be sure to read the instructions before installation. Prioritize handling the core structures (such as the base and pneumatic rod) first, and then install additional accessories. If any accessories are missing or the sizes do not match, contact the manufacturer for replacement or reissue. Do not force assembly, which could lead to safety hazards.