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Flanged flat-belt pulley Ø30, 16 mm face, Ø6 bore
What is a Ø30 flanged pulley used for? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Also called: jockey pulley, idler pulley, tightening pulley, polea tensora, Spannrolle
Exact dimensions. True size, with no printing tolerance added.
- length
- 36.0 mm
- width
- 36.0 mm
- height
- 20.0 mm
Notes
- Ø30 × 16 mm straight face between two Ø36 × 2 flanges (20 wide overall), Ø6 bore: the jockey (tightening) pulley that presses on the back of a 16 mm flat belt, same face and flange proportions as the catalog Ø40 and Ø80 pulleys.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).
Flanged flat-belt pulley Ø30, 16 mm face, Ø6 bore size chart
| dimension | value |
|---|---|
| face | Ø30 × 16 mm |
| flanges | Ø36 × 2 |
| bore | Ø6 |
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. 5: 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=flanged-flat-pulley-30-bore6

Fits with
Questions
What is a Ø30 flanged pulley used for?
Ø30 × 16 mm straight face between two Ø36 × 2 flanges (20 wide overall), Ø6 bore: the jockey (tightening) pulley that presses on the back of a 16 mm flat belt, same face and flange proportions as the catalog Ø40 and Ø80 pulleys.
