Bearing

A mock bearing — a stand-in you drop into an assembly where a real bearing will go. It is a single rigid part: an outer ring, an inner ring with a bore, and a flat web joining them. There are no balls, no races and no clearance anywhere, so nothing in it turns.

That is the point. It solves in milliseconds and prints in minutes, so it holds the right envelope while you work on everything around it. Swap in the real part once the assembly is settled.

For a bearing that actually spins, use bearing — the print-in-place ball bearing in this same account, with races, a cage and tuned clearances.

Setting it to a real part

Dial od, id and h to the catalogue bearing you intend to fit. A 6000ZZ is 26 mm across, 10 mm bore, 8 mm wide, so that is od 13, id 5, h 8. The Info panel prints the across-the-part figures back at you, so you can check them against the datasheet without doing the arithmetic.

Watch the names

Both od and id are radii, not diameters — the default od of 16 gives a part 32 mm across. This is deliberate: they feed cylinder radii directly. The Info readout is the one to trust when you are matching a catalogue size.

Printing

Flat, no supports. The web is one t thick, so at the 1 mm default it is a couple of perimeters and will flex. Raise t if the mock has to carry anything, or if you are using it as a real spacer.