Supports and wheels for the home chair

The chair served me faithfully and faithfully for a couple of years at the workplace. After the global renewal of office furniture at work it was written off, and I bought it back for home at a reasonable price. It was a bit low for a desk at work and in due course I "raised" it by 35 mm with legs of this design (see models of leg parts without wheels).

At home, the computer desk is on a carpeted floor, and it is somehow "not comical" to drive the chair back and forth on the carpet. I didn't bother with inventing the fixing of purchased furniture wheels on the specific profile of the legs. I looked at what others were doing on this topic on 3DToday, Cults, Thingverse and started modeling my own.

The front wheel housing simply slides into the profile tube of the front leg with tension.

The rear wheel housing is first bolted to the chair leg, mounting the wheels in the housing is done later, but there is no particular inconvenience during assembly. As wheel axles at first tried to use standard pins 5x40 - in the hole of the body pin sits with tension, in the holes of the wheels with a slight gap and on silicone grease, tapered inserts printed from Elastan D-100 (analog PPU) tightly stretched on the pin, holding the wheel on both sides. However, time has shown that with this design the wheels sooner or later "slide" off the axles sideways. Therefore, I replaced the pins with M5x40 countersunk head screws with a self-locking M5 nut.

The chair with wheels of this design has already passed a 3-month run-in period under fairly intensive use (while I am at work, my wife uses the computer, after work I sit at it until night).