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Detailed Guide on Assembling Office Swivel Chairs

Are you looking for a simple and quick way to assemble an office swivel chair? The following article will provide you with the necessary knowledge and tips to assemble your swivel chair accurately like a professional. Let's explore with Okamura!

1. Tools Required for Assembling a Swivel Chair

Having the right tools is crucial for assembling an office swivel chair smoothly and easily. Essential tools for assembling an office swivel chair include:

Tool Name

Purpose

Hexagon screwdriver

This is an essential tool for tightening or loosening screws and bolts during assembly

Wrench

Used for tightening joints, especially those requiring high firmness. It can also be used to remove flat-head screws

Hammer

In some cases, a hammer is needed to secure joints or adjust the position of parts

2. Simple Assembly of Office Swivel Chairs: Anyone Can Do It

Before starting assembly, check the components provided by the manufacturer based on the instructions and illustrations. This ensures that the chair is fully assembled without damage or missing parts from shipping. Essential components for assembling a swivel chair include:

  • Chair frame (base, backrest, and connecting bars)

  • Seat cushion

  • Backrest

  • Armrests

  • Piston (the column connecting the base and seat)

  • Seat plate

  • Lever (if applicable)

  • Headrest (if applicable)

  • Wheels

  • Screws, bolts, hex key, washers, nuts

2.1. Step 1: Attach the Wheels to the Base

Most ergonomic chairs from Okamura come with pre-attached wheels for convenience, making assembly easier. You only need to connect the chair body, armrests, headrest, and lumbar support (if applicable) to complete the chair.

For standard models, gather the following components for assembly: wheels, base, screws, and screwdriver. Each wheel has small holes designed to secure the wheels firmly to the base. Follow these installation steps:

  • Step 1: Place the wheels in the correct positions on the base.

  • Step 2: Insert screws into the holes on the wheels and base.

  • Step 3: Use a screwdriver to tighten the screws.

Attaching the wheels to the base is the first step in the installation process.
Attaching the wheels to the base is the first step in the installation process.

If issues arise during the wheel installation process, you can refer to the detailed troubleshooting and solutions in the table below

Issue Encountered

Inspection Method

Solution

Wheels do not fit or are too loose

  •  Check the size of the holes and screws

  •   Choose the correct type of screws and tighten them appropriately.

Wheels are stuck

  •   Check for obstructions in the wheel (hair, fabric fibers).  

  •   Check if the wheel axle is bent.

2.2. Step 2: Installing the Chair Cylinder

For chairs from Okamura, installing the chair cylinder is very simple as you only need to place the cylinder into the slot on the base of the chair without using additional screws.

The chair cylinder (piston) is an essential component that adjusts the height of the swivel chair with its cylindrical design and threads that securely connect to the chair base. To install the chair cylinder correctly and save time and effort, you can follow these 3 steps:

  • Step 1: Identify the position of the screw holes on the piston and the chair base.

  • Step 2: Insert the piston into the corresponding hole on the chair base.

During the installation of the chair cylinder, you may encounter the following technical issues:

Issue Encountered

Inspection Method

Solution

Cylinder does not fit or is too loose 

Check the size of the hole and screws  

Select the correct type of screws and tighten properly

Cylinder is misaligned  

Check the installation position  

Readjust the cylinder position and tighten screws

2.3. Step 3: Connect the seat plate to the seat cushion

All Okamura chair models come with the seat plate already connected to the seat cushion, saving users time and effort during assembly. However, for many other common office chairs on the market, users can follow the instructions below.

The seat plate, which is either round or oval in shape, serves as a base for connecting the cylinder and the seat cushion. Prepare the seat cushion, screws, and screwdriver to assemble using the following 3 steps:

  • Step 1: Identify the positions of the screw holes on the seat plate and the seat cushion.

  • Step 2: Attach the seat plate to the seat cushion.

  • Step 3: Tighten the screws with a screwdriver.

Below are common issues encountered during the assembly of the seat plate and their solutions:

Issue Encountered

Inspection Method

Solution

Seat plate does not fit properly or is too loose

The size of the holes and screws.

Choose the correct type of screws and tighten them adequately.

2.4. Step 4: Install Adjustment Mechanisms (if applicable)

To make the office chair more flexible and comfortable, many models are equipped with additional adjustment mechanisms such as height adjustment levers, reclining levers, etc. For premium chairs from the Okamura brand, these adjustment mechanisms are integrated under the seat cushion, minimizing complex installation steps for the user.

For other swivel chair products, prepare screws and a screwdriver to secure these parts to the chair frame or seat cushion according to the following steps:

  • Step 1: Read the user manual carefully to determine the correct installation positions for each adjustment mechanism on the chair.

  • Step 2: Position the adjustment mechanism as indicated and use screws to secure it.

2.5. Step 5: Attach the Armrests to the Seat Plate

To complete the assembly of the armrests where users can rest their arms while working, you will need the armrests, seat plate, screws, and a screwdriver. Armrests are typically made of plastic or metal and can be adjusted to suit your sitting posture. Follow these detailed steps to connect the armrests to the seat plate:

  • Step 1: Ensure that you have identified the correct screw holes on both the seat plate and armrests.

  • Step 2: Position the armrests onto the seat plate, making sure the screw holes align properly.

  • Step 3: Use a screwdriver to tighten the screws adequately, but not too tight to avoid damaging the screw threads.

  • Step 4: After tightening the screws, check the stability of the armrests by gently shaking them to ensure they are secure and not wobbly.

Modern chairs are designed with 4D armrests, which can be adjusted according to the user's needs. 
Modern chairs are designed with 4D armrests, which can be adjusted according to the user's needs. 

Below are solutions for common issues encountered when installing armrests:

Issue Encountered

Inspection Method

Solution

The screw holes on the armrests and seat plate do not align. 

Check the positions of the screw holes on both parts.

Adjust the positions of the armrest joints and seat plate so that the screw holes align.

2.6. Step 6: Install the Backrest

To complete the backrest for the office swivel chair, you need to prepare the backrest, seat plate, screws, and a screwdriver. On many modern ergonomic chairs, the backrest is often made of mesh or fabric and can be adjusted for tilt to suit your sitting posture. Here's how to install the backrest:

  • Step 1: Place the backrest in the correct position on the seat plate, ensuring the screw holes align.

  • Step 2: Use screws to secure the backrest to the seat plate.

  • Step 3: After tightening the screws, check to ensure the backrest is securely fixed.

Here are solutions for common technical issues you may encounter:

Issue Encountered

Inspection Method

Solution

Screw holes on the backrest and seat plate do not align

Check the positions of the screw holes on both parts

Adjust the position of the backrest and seat plate to ensure the screw holes align

Screws are too tight or too loose

Check visually and by hand

Use the appropriate screwdriver to tighten or loosen the screws

2.7. Step 7: Assemble the chair frame (if applicable)

Some swivel chair models have a separate chair frame, usually made of metal. To assemble the chair frame, you will need the frame, screws, and a screwdriver. Follow these steps:

  • Step 1: Position the chair frame correctly to connect with other parts of the swivel chair, such as the seat plate or chair base.

  • Step 2: Use screws to secure the chair frame in the designated positions.

Common issues during chair frame assembly and their solutions:


Issue Encountered

Inspection Method

Solution

Frame does not align with other parts

Check the user manual and the positions of the screw holes.

Adjust the position of the chair frame and other components to ensure alignment.

2.8. Step 8: Attach the Chair Base to the Chair Body

After fully assembling the chair body (including the seat plate, backrest, armrests, etc.), you can follow these steps to attach the chair base to the chair body:

  • Step 1: Position the chair base correctly onto the chair body and align the screw holes.

  • Step 2: Use screws to secure the chair base to the chair body.

Similarly to other components, you might encounter the following issues while attaching the base and the chair body together:

Issue Encountered

Inspection Method

Solution

Chair base does not align with the chair body

Check the position of the screw holes on both parts.

Adjust the position of the chair base and chair body so that the screw holes align.

Screws are too tight or too loose

Check visually and by touch.


Use the appropriate screwdriver to tighten or loosen the screws.

2.9. Step 9: Install the headrest (if applicable)

The headrest (fixed or adjustable) is not a mandatory component of office chairs and is typically found only in high-end models. To install the headrest, you need to have the headrest, screws, and screwdriver ready and follow these three steps:  

  • Step 1: Locate the installation position for the headrest on the back of the chair.  

  • Step 2: Place the headrest into the correct position and use screws to secure it.  

  • Step 3: Adjust the height of the headrest to match your height.

The headrest is designed to provide optimal support for users and reduce the risk of spinal problems. 
The headrest is designed to provide optimal support for users and reduce the risk of spinal problems. 

Here are solutions to common issues encountered during the installation of the headrest:

Issue Encountered

Inspection Method

Solution

Headrest screw holes do not align with the back of the chair

Check the position of the screw holes on both components.

Adjust the position of the headrest and the back of the chair so that the screw holes align.

2.10. Step 10: Check the stability and adjust the chair

After assembling, it's essential to check the chair's stability to ensure safety. An unstable chair can cause accidents such as falls, joint dislocations, or spinal issues,...

Beside, Early detection and resolution of structural issues can extend the chair’s lifespan and ensure user comfort. Follow these steps to check the stability of your newly assembled chair:

  • Step 1: Check all joints between the chair parts (such as the base, seat plate, backrest, and armrests) to ensure they are tight and secure.

  • Step 2: Sit on the chair and lean in different directions to test its stability.

  • Step 3: Gently shake the chair to detect any unusual noises and identify any wobbly parts.

  • Step 4: Rotate the wheels to ensure the base moves smoothly and is not stuck.

  • Step 5: If the chair has adjustable features like height or tilt, test these adjustments while sitting.

Note: This guide is for standard office chairs. For high-end brands like Okamura, the assembly process is streamlined to maximize user convenience. Some premium models can be assembled in under 15 minutes.

3. Important considerations for using self-assembled office chairs

To ensure the longevity and safety of your self-assembled office chair, keep the following points in mind:

  • Do not sit on the armrests: Armrests are designed to assist when sitting down or standing up. Sitting on them can break or deform them, affecting the chair's aesthetics and durability.

  • Avoid sitting too forcefully: Forceful sitting or jumping can loosen joints, create noise, and reduce the chair’s lifespan. Excessive force can also damage height adjustment mechanisms.

  • Inspect the chair if parts are faulty: If you find any damaged parts during use, stop using the chair and inspect or repair it promptly. For detailed repair instructions, refer to the article “10+ Chair Components - How to Use & Fix Issues.”

  • Regular maintenance: Regularly maintain the chair by checking joint tightness, screw rust, and wheel functionality. Clean the chair with a damp cloth and avoid strong cleaners that may damage the chair’s material.

Using a chair correctly not only extends the product's lifespan but also provides a more comfortable and safe sitting experience.
Using a chair correctly not only extends the product's lifespan but also provides a more comfortable and safe sitting experience.

4. Introduction to 3 Easy-to-Assemble Okamura Office Chairs

For office chairs without additional accessories like headrests, lumbar supports, or armrests, customers can easily assemble them at home. However, for chairs with additional accessories, while home assembly is still possible, it's more reliable with technical support. Here are three easy-to-assemble office chair models from Okamura:

4.1. Sylphy

The Sylphy ergonomic chair is intelligently designed to meet individual needs. With its unique backrest curve and easy adjustability, Sylphy accommodates various back sizes, providing optimal comfort for all body types. Thanks to its high customizability, Sylphy is not just an office chair but a dependable companion, helping you work more effectively and comfortably every day.

The Sylphy chair features a meticulously curved design that contours to the body, helping to maintain a natural sitting posture and minimize pressure on the spine. 
The Sylphy chair features a meticulously curved design that contours to the body, helping to maintain a natural sitting posture and minimize pressure on the spine. 

Here is a detailed guide to assembling the Sylphy chair:

  • Step 1: Place the hex screws (M10) into the seat cushion, then attach the backrest to the chair using washers and hex bolts.

  • Step 2: Insert the piston into the center of the 5-star base (the base is pre-attached with wheels by the manufacturer).

  • Step 3: Position the chair's body onto the piston and secure it with screws and a screwdriver.

  • Step 4: Attach the armrests to the pre-designed slots underneath the seat cushion. Secure them using hex bolts (M8 x 25L) and washers.

  • Step 5: Sit on the chair several times to perform a final stability check.

4.2. Finora

The Finora ergonomic chair is the perfect blend of elegant design and exceptional functionality. With a variety of color and material options, Finora seamlessly integrates into any workspace while providing optimal comfort for the user. Inspired by the automotive industry, this chair is not just an office chair but a modern piece of art.

Inspired by the sleek lines of automotive design, the Finora chair is a symbol of luxury and sophistication. 
Inspired by the sleek lines of automotive design, the Finora chair is a symbol of luxury and sophistication. 

Despite its elegant design, the Finora chair features a simple assembly process. Here’s a detailed guide for assembling the Finora chair:

  • Step 1: Place the chair base on a flat surface and insert the piston into the base vertically and perpendicular to the floor.

  • Step 2: Hold the chair body with both hands, with one hand grasping the top of the backrest and the other hand securely holding the seat cushion. Attach the assembled chair body (pre-installed by the manufacturer) to the piston.

Assembly Tip:

  • Since the chair body is heavy, handle it carefully when attaching it to the piston. Avoid dropping or knocking the chair body to prevent damage or chipping.

  • Do not hold the chair body by the armrests; instead, hold it according to the instructions in Step 2.

4.3. Cynara

Inspired by the yumi—traditional Japanese bows—the Cynara chair is designed with graceful curves that cradle the body, allowing you to work effectively without fatigue. With its flexible design and supportive structure, the Cynara chair accommodates a range of body movements, ensuring you remain comfortable and focused.

Modern technology integrated into the soft, curved design helps the Cynara chair provide natural and flexible support for the body 
Modern technology integrated into the soft, curved design helps the Cynara chair provide natural and flexible support for the body 

The Cynara chair is a unique and elegant model with a strong Japanese style. As this chair does not come with additional accessories, customers only need to follow a simple and easy installation process. Here’s a detailed guide for assembling the Cynara chair at home:

  • Step 1: Insert the piston into the completed chair base (pre-installed with wheels) vertically.

  • Step 2: Place the chair body onto the piston and secure it firmly with screws.

In the article above, Okamura provides a detailed 10-step guide for assembling office chairs in a simple and easy manner. However, for chairs with multiple complex adjustment features, it is advisable to seek assistance from a professional to ensure safety during use. For more information on Okamura office chairs that are easy to assemble, please visit: https://www.okamura.com.vn/san-pham/ghe-van-phong  


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