# Bellows coupling

A clamping bellows shaft coupling: two hubs and a bellows, three solids. Axis along Z, the first hub's end face on the XY plane, bore d1 in the first hub and bore d2 in the second.

## Source

MISUMI Couplings catalogue, *Bellows Couplings, Clamping*, CPBC table, <https://de.misumi-ec.com/files/images/products/docs/flexibleshaftcouplings.pdf>, PDF page 24: outside diameter D, length L (33 mm for D20, the aluminium CPBC; the stainless CPBSC is 32), hub length l, screw positions F and G, screw M, and the bores offered on each size. Hubs are aluminium and the bellows phosphor bronze.

Only bore pairs one size offers are presets.

**Proportions, for looks only:** the bellows' folds, which the table doesn't dimension, and the slit's width. The bellows here is a closed solid, not a thin wall, so don't read stiffness or inertia from this model. The screws aren't modelled, only their holes at nominal M.