PRIVACY & LIMITATIONS

Drive parameters stay local. No equipment is connected.

Belt pitch, pulley teeth, speed, available belt lengths, target center distance, and adjustment travel are used only for geometric inversion on the current page. BeltSpan connects to no motor, drive, CAD, inventory, or purchasing system.

Pitch-line geometry, not drive selection

The tool uses ideal synchronous-belt pitch-line geometry to invert center distance from at most 200 integer belt tooth counts, then calculates ideal ratio, pitch-line speed, small-pulley wrap, and travel relative to the target. It does not validate profile compatibility, belt width, transmitted power, start/brake torque, pretension, bearing load, tooth jump, flanges, backlash, resonance, thermal environment, contamination, life, or guarding.

Assembly sheets may reveal machine dimensions

Refreshing or closing discards inputs. CSV contains pitch, pulley and belt tooth counts, center distance, target delta, small-pulley wrap, and travel classification; reports and optional local checkpoints read the visible summary. Before ordering, verify the exact belt profile and maker design manual, and perform mechanical assembly only under proper lockout conditions.

Advertising and local preferences

This page uses Google AdSense Auto Ads. Google may use cookies or similar technologies under its policies. .miluland.com domain cookies sync language, theme, high contrast, a six-item recent-tools list, and up to 16 favorite tool IDs across MiluLand sites. These values never contain inputs, files, or results; the current site also keeps a local compatibility copy.

Local report studio

The report studio reads only the workbench’s currently visible result summary for local preview, Markdown copy, JSON download, printing, and a SHA-256 fingerprint. It never reads input controls or original files and is not persisted unless you choose to download it.

Optional local checkpoints

Only when you explicitly choose Save does the tool write the visible result summary, time, and optional short label to this site’s browser storage, up to five entries. Imported files and input-control contents are never stored; you can export, restore same-tool checkpoints, or clear them at any time. Imports are limited to 128KB and validate the tool, timestamp, summary, and label of up to 80 characters.