# Oldham coupling

A clamping Oldham shaft coupling: two hubs and a spacer, 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, *Oldham Couplings, Clamping*, MCOC table, <https://de.misumi-ec.com/files/images/products/docs/flexibleshaftcouplings.pdf>, PDF page 16: hub D, spacer D1, spacer bore d3, length L, hub length l, screw positions A and F, screw M, and the bores offered on each number.

Only bore pairs one number offers are presets. Numbers 30, 34 and 38 aren't here yet.

**Not modelled:** the tongues joining hubs to spacer, which are inside and which the table doesn't dimension, the screws (only their holes at nominal M) and the screw head's reach D2. **Proportions, for looks only:** the slit's width.

The table gives hubs in EN 1.4301 equivalent sintered alloy and the spacer in carbon-reinforced resin. Those aren't in the material list, so the part uses `steel-generic` and `pa6`, for looks and rough mass only.