Belt & Pulley Drive Speed Ratio & Linear Velocity Calculator
Calculate driven pulley rotational speed (RPM), linear belt velocity (m/s & ft/min), and pulley diameter transmission ratio (D1*N1 = D2*N2) for industrial machine drives.
Calculator Inputs
Live Real-TimeDriven Shaft Speed (RPM N₂)
Linear Belt Velocity (v)
11.39 m/s
Pulley Speed Transmission Ratio
2 :1
Belt Velocity (km/h)
41 km/h
Optimal Belt Linear Speed: Velocity falls safely into the efficient grip operational range.
Pulley Rotational Speed Profile
Detailed Calculation Breakdown
Calculation Methodology
Pulley Kinematics: D1 * N1 = D2 * N2. Driven RPM N2 = N1 * (D1 / D2). Linear Belt Speed v (m/s) = (π * (D1/1000) * N1) / 60.
Important Legal & Educational Disclaimer
This mechanical kinematics tool calculates non-slip belt and pulley speed transfers.
This calculator is designed for educational and informational purposes only based on public statutory frameworks. The outputs do not constitute binding financial, tax, or legal advice. We assume no liability for decisions made based on these estimations. Always verify with the relevant official authorities or a certified professional advisor.
Frequently Asked Questions
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