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Round band Ø5, endless, 325.66 mm centreline, on two pulleys 100 mm apart

Name: Round band Ø5, endless, 325.66 mm centreline, on two pulleys 100 mm apart dimension sheet
Creator: Xem Studio
License: https://creativecommons.org/licenses/by/4.0/

How long is the round band? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: round belt, o-ring belt, round band, correa redonda, Rundriemen

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

length: 145.0 mm
width: 45.0 mm
height: 5.0 mm

Notes

Ø5 endless round band at its working shape on two equal pulleys 100 mm apart: centreline = 2 × 100 + 2π × 20 = 325.66 mm.
Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Round band Ø5, endless, 325.66 mm centreline, on two pulleys 100 mm… size chart

dimension	value
section	Ø5
centreline length	325.66 mm
centre distance	100 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.org	web	Publisher's page; dimensions are facts
507movements.com	Brown's movement No. 257: 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

round-band-5-c100-pulleys-40

band in place, pulley axes at (0,0) and (100,0), mid-plane z 5

STEP · 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=round-band-5-c100-pulleys-40

Round band Ø5, endless, 325.66 mm centreline, on two pulleys 100 mm apart, isometric render of a generated part — Render of round-band-5-c100-pulleys-40 from the free STEP; not to scale.

Fits with

Free

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

How long is the round band?

Ø5 endless round band at its working shape on two equal pulleys 100 mm apart: centreline = 2 × 100 + 2π × 20 = 325.66 mm.