The Basics of Motor Performance

vibration motor factory

List of terms on motor performance

Term	Symbol	Unit
Input	P	W
Output	P	W
Maximum output	Pmax.	W
Voltage	V	V
Current	I	A
No-load current	I0	A
Stall current	Is	A
Efficiency(*1)	η	%
Maximum efficiency	ηmax.	%
Speed	N	r/min(*2)
No-load speed	N0	r/min
Torque	T	mN·m, g·cm
Stall torque	Ts	mN·m, g·cm

(*1) It indicates what percentage of the electric energy applied to the motor is used effectively as the mechanical energy.
(*2) It means "revolutions per minute".