Replacing office chair wheels is the most satisfying repair in furniture: five minutes, no tools, and a chair that feels new. Here's the full procedure, including the two snags that catch people out.
A set of five replacement castors or glides with an 11mm push-fit stem — the universal standard on office chairs. (Check yours first: pull a castor out and measure the pin. 11mm = you're standard. 10mm = IKEA, and you need IKEA-specific parts.)
1. Flip the chair over. Rest it seat-down on the desk or floor. No need to remove anything else.
2. Pull each old castor straight out. Grip the wheel and pull firmly along the line of the stem. They're held by a friction ring, not a screw — a decisive tug beats a timid wiggle.
3. Push each new castor in until it clicks. Line the stem up with the socket and press home. You'll feel the ring seat itself.
4. Flip it back and test. That's it. Genuinely.
Years of grime can weld a stem in place. Don't yank at an angle — you'll mar the socket. Instead, use a flat screwdriver as a lever between the castor body and the base, padding the base with a cloth. They all surrender eventually.
Check nothing is lodged in the socket (grit, carpet fluff, half a biscuit — we've heard everything). Then press straight, not at an angle. If it still won't seat, your stem may be the wrong size — email a photo to info@chairoutlet.co.uk and we'll check for free.
Hard floor, want to stay put: chrome steel glides, £17.99. Hard floor, want to roll quietly: soft PU castors, £6.99. Heavy use on carpet: 50mm chrome steel castors, £19.99. All fit the same 11mm socket; all delivered free to UK mainland.