Library › Hardware › Mechanism parts ·

Oldham coupling centre disc Ø40

Name: Oldham coupling centre disc Ø40 dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

What is the Oldham centre disc? · Modern device · basis: Xem Studio drawing

Also called: oldham disc, oldham coupling center

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

sizes: 2 in table

Notes

Ø40 × 8 disc with two 8.2 mm slots at 90°, one per face: each hub's tongue slides in one slot.

Oldham coupling centre disc Ø40 size chart

dimension	value
diameter	40 mm
slots	8.2 × 4 mm, crossed

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Xem Studio

drawing

web

Publisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

oldham-disc-40

Centre disc

STEP · STL

Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.

Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=oldham-coupling-disc-40

Oldham coupling centre disc Ø40, isometric render of a generated part — Render of oldham-disc-40 from the free STEP; not to scale.

Fits with

Free

Oldham coupling (parallel-offset shaft coupling), isometric render of a generated part

Oldham coupling (parallel-offset shaft coupling)3 sizes★ 1 file

Questions

What is the Oldham centre disc?

Ø40 × 8 disc with two 8.2 mm slots at 90°, one per face: each hub's tongue slides in one slot.