Pulley Motor Speed

Overview

Engineering reference data for Pulley Motor Speed in mechanics.

Key Formulas

Newton's Second Law

$F = ma$

Force = mass × acceleration.

Work

$W = Fd\cos\theta$

Work = force × displacement × cos(angle).

Kinetic Energy

$E_k = \frac{1}{2}mv^2$

Energy of motion.

Potential Energy

$E_p = mgh$

Gravitational potential energy.

Variables

Symbol	Description	Unit
$F$	Force	N
$m$	Mass	kg
$a$	Acceleration	m/s²
$v$	Velocity	m/s

Pulley Speed Relationships

The table below shows common motor speeds and their corresponding required pulley diameters to achieve those RPMs:

Note: The relationship between motor speed ($n_1$), driven speed ($n_2$), and pulley diameters ($D_1$ for motor pulley, $D_2$ for driven pulley) is inversely proportional: $\frac{n_1}{n_2} = \frac{D_2}{D_1}$ For a fixed driven pulley size, a smaller motor pulley will result in a lower output speed.

Interactive Charts

References

• Original Source