Xem Studiomeasured geometry

Library › Hardware › Mechanism parts ·

Plain flat-belt pulley Ø40 × 16 face, Ø8 bore (no flanges)

What is a plain Ø40 flat-belt pulley for? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: plain pulley, flat belt pulley, pulley without flanges, polea plana sin pestañas, Flachriemenscheibe ohne Bord

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

length
40.0 mm
width
40.0 mm
height
16.0 mm

Notes

  • Ø40 × 16 mm straight face, Ø8 bore, no flanges: the face is exactly the belt's width, so a twisted belt can leave it at an angle (quarter-turn and guide-pulley drives) without riding over a flange.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Plain flat-belt pulley Ø40 × 16 face, Ø8 bore size chart

dimensionvalue
faceØ40 × 16 mm
boreØ8
flangesnone

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. 256: 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

plain-flat-pulley-40x16pulley, axis Z, centred on z = 0STEP · 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=plain-flat-pulley-40x16

Plain flat-belt pulley Ø40 × 16 face, Ø8 bore (no flanges), isometric render of a generated part
Render of plain-flat-pulley-40x16 from the free STEP; not to scale.

Fits with

Quarter-turn belt between shafts at right angles (no guide pulleys), isometric render of a generated part
Quarter-turn belt between shafts at right angles (no guide pulleys)5 sizes★ 1 file
Three speeds by shifting a belt over pulleys carrying gears (16 / 24 / 32 T), isometric render of a generated part
Three speeds by shifting a belt over pulleys carrying gears (16 / 24 / 32 T)4 sizes★ 1 file
Two speeds from two belts on fast and loose pulleys, isometric render of a generated part
Two speeds from two belts on fast and loose pulleys5 sizes★ 1 file

Questions

What is a plain Ø40 flat-belt pulley for?

Ø40 × 16 mm straight face, Ø8 bore, no flanges: the face is exactly the belt's width, so a twisted belt can leave it at an angle (quarter-turn and guide-pulley drives) without riding over a flange.