# Oldham coupling hub Ø40, 5 mm bore

> What is an Oldham coupling hub?

- Category: Hardware › Mechanism parts
- Kind: Modern device
- Basis: Xem Studio drawing
- Page: https://xemstudio.com/objects/oldham-coupling-hub-40/ · JSON: https://xemstudio.com/api/geometry?object=oldham-coupling-hub-40 · Plain text: https://xemstudio.com/objects/oldham-coupling-hub-40/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Ø40 hub with an 8 mm tongue across its face and a Ø5 bore; two hubs and a centre disc make an Oldham coupling.

## Sizes

| dimension | value |
|---|---|
| diameter | 40 mm |
| tongue | 8 × 4 mm |
| bore | Ø5 |

## Where the files are

- Xem Studio: [drawing](https://xemstudio.com/objects/oldham-coupling/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/oldham-coupling-hub-40/index.json

- oldham-hub-40: [STEP](https://xemstudio.com/files/hardware/oldham-coupling-hub-40/oldham-hub-40.step) · [STL](https://xemstudio.com/files/hardware/oldham-coupling-hub-40/oldham-hub-40.stl) — Hub, 5 mm bore

## Questions

**What is an Oldham coupling hub?**

Ø40 hub with an 8 mm tongue across its face and a Ø5 bore; two hubs and a centre disc make an Oldham coupling.

## Fits with

- [Oldham coupling (parallel-offset shaft coupling)](https://xemstudio.com/objects/oldham-coupling/)