IKEA · Chairs & Stools
How to Assemble IKEA MILLBERGET Swivel Chair
Step-by-step IKEA MILLBERGET swivel chair assembly: 14 illustrated steps, an animated video, the hardware list and the tools you need — following the official instructions (AA-2269641-5).
- 14 illustrated steps
- 11 steps in the manual
- 2:15 video
- 65×70×124 cm

What you need
Tools
- Allen key (included)
You’ll need: only the Allen key (124345), included.
Hardware in the box
| Part no. (as printed in the manual) | Qty |
|---|---|
| 128633 | 12× |
| 122898 | 10× |
| 10049025 | 5× |
Step-by-step assembly

Step 1
Open the zip on the backrest cover and take out the parts.
Inside: the gas cylinder, 2 armrests and 5 legs. Recycle the plastic, then close the zip.

Step 2 · manual step 1
Slide the 5 legs into the centre hub.
Work on a rug or the box to avoid scratches. The hub lies upside down.

Step 3 · manual step 2
Fix each leg with 1 short bolt (122898) and the Allen key.
5 bolts in total. Use the short 122898 bolts here — not 128633.

Step 4 · manual step 3
Press the 5 casters into the ends of the legs until they click.
Push each one straight in — not at an angle.

Step 5 · manual step 4
Turn the base over onto its casters.

Step 6 · manual step 4
Put the gas cylinder into the hole in the centre of the base.

Step 7 · manual step 5
Lay the seat upside down and fit the mechanism.
Fix it with 4 bolts (128633) and the Allen key.

Step 8 · manual step 6
Turn the seat over and put it onto the gas cylinder.
The top of the cylinder goes into the hole in the mechanism.

Step 9 · manual step 7
Fix each armrest to the seat with 2 bolts (128633).
4 bolts in total. Insert them by hand — you tighten them in step 10.

Step 10 · manual step 8
Fit the backrest between the armrests with 2 bolts (128633).
Lean it forward over the seat and bolt it through the back of each armrest.

Step 11 · manual step 8
Tilt the backrest up.

Step 12 · manual step 9
Insert 2 more bolts (128633) through the armrests into the backrest.
One on each side.

Step 13 · manual step 10
Tighten all 8 armrest bolts with the Allen key.
The bolt heads should sit neatly in the armrest holes.

Step 14 · manual step 11
Store the Allen key in the pocket inside the backrest cover.
Open the zip at the back, slide the key in, then close the zip.
Tips & safety
- Warning: gas cylinder Only trained personnel may replace or repair the seat height adjustment parts (manual p. 7).
- Adjust the chair to fit you Lift the lever to change the seat height; move it in or out to lock or unlock the tilt. The knob under the seat sets the tilt tension (manual p. 15–16).
Official instructions
This guide follows IKEA's official assembly instructions (AA-2269641-5). Keep the printed manual to hand — if anything differs, the manual is right.



