Looking to replace a chair I use a lot in my hobby room. Unfinished concrete floor, pretty rough.

NOT a stool, a chair with a back and adjustable height. Need something with large, compliant casters that will roll as smoothly as possible.

The one I have is fine except the casters are too small and get hung up on pits and bumps in the floor. I replaced the original casters with the largest ones I could make fit and that helped but there's still room for improvement.

Roller blade wheels for office chairs

I replaced most of the wheels on my office chairs with these.

Why not fix the floor!

Put down a frame, pour some leveler.

Pouring some leveler might be the best long term solution to the rough surface, not sure any wheel will overcome that issue.

The problem with a rough concrete floor will be the wear on those office chair wheels.
Even if you can find some that work when they're new, they won't wear well against rough concrete. A rubber pneumatic wheel would be better in that regard but will also have more rolling resistance.
I agree with Patriot, you need to work on the floor somehow first. Maybe filler, maybe a company with a concrete grinder or some other method.
Another option, if you work in a space limited area, would be a plywood sheet or two to cover the part you use the most.

Can you replace the wheels?

Check it

https://www.amazon.com/Office-...ls-Set/dp/B01CTIG4GE

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quote:

Originally posted by BigSwede:
Can you replace the wheels? Check it

https://www.amazon.com/Office-...ls-Set/dp/B01CTIG4GE

I have those, or very similar wheels on the chair now.

For others, repairing the floor is not really an option. It's a 70+ year old unfinished pour in a basement with water issues. The expense and difficulty vs. any advantage gained doesn't pencil out.

I'm thinking pneumatic casters in the 4 inch range. I may just fab up a new base for the existing chair which is otherwise satisfactory.

I just looked up "Electric, walk behind, concrete grinder/planer" and came up with many solutions from United Rentals for less than $200/day.

I rented one of those once. I had a floor that had a hump in the middle and thought grinding it down would be the solution. I taped off the walls a such with visqueen, opened a window and had a 3’ round fan blowing out the back. Then, I got to grinding. Respirator and goggles, about 45 minutes later, a firefighter pops his head in where the fan was blowing the dust out and scares the shit out of me. Apparently there was so much dust billowing out of my house, the neighbors thought the house was on fire and called the fire department. Never again.

Sounds like you need either pneumatic or large diameter stem casters that have the same stem set up as an office chair (or modified to fit).

Office chair stems appear to be 7/16" (11mm) diameter, and 7/8" (22mm) in length.

I found this company that has castors with a bit taller of a stem, but in wheel diameters up to 5".

https://www.castercity.com/stemcaster-model-l3/

quote:

Originally posted by a1abdj:

I found this company that has castors with a bit taller of a stem, but in wheel diameters up to 5".

https://www.castercity.com/stemcaster-model-l3/

That looks like a cost-effective solution. Thanks!