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Rope sheave for Ø3 rope, pitch Ø19 (rope centre), Ø23.4 rim, Ø4 bore

What groove does a rope sheave need? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: rope sheave, pulley wheel, block sheave, pulley 23.4 mm, roldana (garrucha) para cuerda, Seilrolle

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

length
23.4 mm
width
8.0 mm
height
23.4 mm

Notes

  • Sheave 8 mm wide with a round-bottomed groove of radius 1.6 mm (1.07 × the Ø3 rope, the usual 6–10 % oversize) opening into 30° flanks; the rope rests on the groove bottom with its centre on a Ø19 circle, so a turn moves the rope 59.69 mm. Rim Ø23.4, Ø4 bore for a Ø4 pin.
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Rope sheave for Ø3 rope, pitch Ø19 (rope centre), Ø23.4 rim, Ø4 bore size chart

dimensionvalue
ropeØ3
pitch Ø (rope centre)19 mm
grooveR1.6, 30° flanks
rimØ23.4 × 8 mm
boreØ4

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. 12: 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

rope-sheave-3mm-pitch-19sheave, axis Y, centred on the originSTEP · 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=rope-sheave-3mm-pitch-19

Rope sheave for Ø3 rope, pitch Ø19 (rope centre), Ø23.4 rim, Ø4 bore, isometric render of a generated part
Render of rope-sheave-3mm-pitch-19 from the free STEP; not to scale.

Fits with

Single fixed pulley (power equals weight), isometric render of a generated part
Single fixed pulley (power equals weight)3 sizes★ 1 file
Blocks and tackle, two sheaves in each block (4 : 1), isometric render of a generated part
Blocks and tackle, two sheaves in each block (4 : 1)4 sizes★ 1 file

Questions

What groove does a rope sheave need?

Sheave 8 mm wide with a round-bottomed groove of radius 1.6 mm (1.07 × the Ø3 rope, the usual 6–10 % oversize) opening into 30° flanks; the rope rests on the groove bottom with its centre on a Ø19 circle, so a turn moves the rope 59.69 mm. Rim Ø23.4, Ø4 bore for a Ø4 pin.