Xem Studiomeasured geometry

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Round-groove pulley Ø40 × 10 for a Ø5 round band, Ø8 bore

What is this grooved pulley? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: grooved pulley, round belt pulley, o-ring belt pulley, poleas de garganta redonda, Rundriemenscheiben

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

length
40.0 mm
width
40.0 mm
height
10.0 mm

Notes

  • Ø40 × 10 pulley with a semicircular R2.5 groove centred on the rim: a Ø5 round band lies in it with its centre on the Ø40 circle, touching the groove over half its section.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Round-groove pulley Ø40 × 10 for a Ø5 round band, Ø8 bore size chart

dimensionvalue
outside Ø40 mm
grooveR2.5, centre on the rim
bandØ5 round
width10 mm
boreØ8

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. 257: 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

round-groove-pulley-40-band5-bore8pulley, axis Z, z 0..10, groove centred at z 5STEP · 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=round-groove-pulley-40-band5-bore8

Round-groove pulley Ø40 × 10 for a Ø5 round band, Ø8 bore, isometric render of a generated part
Render of round-groove-pulley-40-band5-bore8 from the free STEP; not to scale.

Fits with

Round-groove pulleys and round band, 1 : 1, isometric render of a generated part
Round-groove pulleys and round band, 1 : 14 sizes★ 1 file

Questions

What is this grooved pulley?

Ø40 × 10 pulley with a semicircular R2.5 groove centred on the rim: a Ø5 round band lies in it with its centre on the Ø40 circle, touching the groove over half its section.