Library › Hardware › Mechanism parts ·
Ball-joint socket: Ø40 body with an R15 hemispherical cup on a Ø12 tube, 3 × Ø2.5 (M3 tap) holes
What is the socket of a tube ball joint? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Also called: ball socket, socket cup, cazoleta de rótula, Kugelpfanne
Exact dimensions. True size, with no printing tolerance added.
- length
- 40.0 mm
- width
- 40.0 mm
- height
- 45.0 mm
Notes
- Ø40 × 20 body with a hemispherical R15 cup (the ball's own radius, line on line) and a Ø12 × 25 tube below it, Ø8 bore through; three Ø2.5 holes on a Ø32 circle are tapped M3 for the cap screws.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).
Ball-joint socket: Ø40 body with an R15 hemispherical cup on a Ø12… size chart
| dimension | value |
|---|---|
| body | Ø40 × 20 |
| cup | R15 hemisphere |
| tube | Ø12 × 25, Ø8 bore |
| cap holes | 3 × Ø2.5 (M3 tap) on Ø32 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Henry T. Brown (1868, public domain) | Five Hundred and Seven Mechanical Movements — scan on archive.org | web | Publisher's page; dimensions are facts |
| 507movements.com | Brown's movement No. 249: figure, his text and an animation | web | Publisher's page; dimensions are facts |
| Xem Studio | drawing | web | Publisher's page; dimensions are facts |
Free files
★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json
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.Plain text: sheet.txt · JSON: /api/geometry?object=ball-joint-socket-d40-cup-r15

Fits with
Questions
What is the socket of a tube ball joint?
Ø40 × 20 body with a hemispherical R15 cup (the ball's own radius, line on line) and a Ø12 × 25 tube below it, Ø8 bore through; three Ø2.5 holes on a Ø32 circle are tapped M3 for the cap screws.
