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Flat belt 16 × 1.5 for a Ø40 / Ø80 drive at 140 mm with a Ø30 jockey pulley (loop drawn)

How much longer is a belt run over a jockey pulley? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: flat belt, belt with idler, correa plana, Flachriemen

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

length
203.0 mm
width
83.0 mm
height
16.0 mm

Notes

  • 16 × 1.5 mm belt on Ø40 and Ø80 pulleys 140 mm apart, its slack (upper) strand pressed 8 mm in by a Ø30 jockey pulley on its back: inside length 472.33 mm, 0.98 mm more than the plain open belt (471.36 mm) — the slack the jockey takes up.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Flat belt 16 × 1.5 for a Ø40 / Ø80 drive at 140 mm with a Ø30 jockey… size chart

dimensionvalue
width × thickness16 × 1.5 mm
inside length472.33 mm
open-belt length471.36 mm

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.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 5: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher'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

flat-belt-16x1-5-jockey-drive-40-80-c140belt loop, z 2..18STEP · 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.
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Plain text: sheet.txt · JSON: /api/geometry?object=flat-belt-16x1-5-jockey-drive-40-80-c140

Flat belt 16 × 1.5 for a Ø40 / Ø80 drive at 140 mm with a Ø30 jockey pulley (loop drawn), isometric render of a generated part
Render of flat-belt-16x1-5-jockey-drive-40-80-c140 from the free STEP; not to scale.

Fits with

Jockey (tightening) pulley engaging a slack belt, isometric render of a generated part
Jockey (tightening) pulley engaging a slack belt5 sizes★ 1 file

Questions

How much longer is a belt run over a jockey pulley?

16 × 1.5 mm belt on Ø40 and Ø80 pulleys 140 mm apart, its slack (upper) strand pressed 8 mm in by a Ø30 jockey pulley on its back: inside length 472.33 mm, 0.98 mm more than the plain open belt (471.36 mm) — the slack the jockey takes up.