Belt Length Calculator

Calculate the required belt length for your pulley system. Supports open belt and cross belt configurations.

šŸ”— Open Belt

Standard two-pulley drive (both pulleys rotate same direction)

šŸ”€ Cross Belt

Crossed belt drive (pulleys rotate opposite directions)

D₁ Dā‚‚ C Belt (top) Belt (bottom)

Calculated Belt Length

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Formula: L = 2C + Ļ€(D₁ + Dā‚‚)/2 + (Dā‚‚ - D₁)²/(4C)
šŸ’” Tip: Add 1–2% extra length for tensioning and splicing allowance.
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