Observed arrival · 2026-11-15
Belt Calculator for Pulley Drives
A detailed calculator for sizing open or crossed belt drives, including flat, V-belt, and timing-belt setups.
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- Engineers and belt-drive DIY mechanics
- Worth noticing
- The page shows its tangent-geometry equations and explains when a common shortcut can miss by several millimeters.
Field notes
Inputs accept pulley diameters and center distance—or a known belt length—with units selectable independently for each field. Results include open or crossed geometry, wrap angles, pulley gap, speed, and ratio; V-belt calculations distinguish outside, pitch, and inside lengths. The page also links to multi-pulley, RPM/ratio, and tension calculators, plus guides for measuring belts and pulleys.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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