Oldham coupling

By Byteworks

Oldham coupling: two slotted hubs with slots turned 90 degrees to each other and a floating disc whose two perpendicular tongues sit in the slots.

Model
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Oldham coupling, 3D printable model

Prompt that made this

Oldham coupling. Three separate parts, not grouped: two hubs with one slot each, slots turned 90° to each other, and a floating disc with a tongue on each face seated in the slots.

Open the model

Made in Voloom from the prompt under the model. Sign in to download the STL, or fork it so every size on the right becomes editable — without spending credits.

Why this one

Joining two parallel shafts with a small lateral offset while transmitting torque.

Each hub drives the floating disc through its slot and tongue. The two tongues are perpendicular, so the disc slides in one direction relative to each hub and absorbs the shaft offset.

How to print

Download the STL, 3MF, or STEP and slice it. Fork the design to change a size before you print.

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