In internal rotor motors, the rotor with the permanent magnets rotates on a shaft inside a stationary stator with coils. Their benefits lie in their lower rotor inertia and their better dissipation of heat losses. They are particularly suitable for high speeds.


Internal Rotor Motors:
In internal rotor motors, the rotor with the permanent magnets rotates on a shaft inside a stationary stator with coils. Their benefits lie in their lower rotor inertia and their better dissipation of heat losses. They are particularly suitable for high speeds.

Brushless DC Motors:
Electronically commutated 3-phase brushless motors (EC motors) are especially well suited for applications requiring smooth running characteristics and a long service life. The high-energy permanent magnets allow high acceleration rates, combined with very high efficiency and speeds of up to 14,000 rpm. The rotor position is fed back electronically by three Hall sensors offset by 120°. Together with an encoder, BLDC motors can also be used in applications requiring precise positioning.

Advantages of Brushless DC Motors:
- Higher efficiency and power density than induction motors (approx. 35% volume and weight reduction with the same output)
- Long service life and smooth running thanks to precision ball race
- Wide speed range with full motor output due to linear torque curve
- Reduced electrical interference emission
- Mechanically exchangeable with stepper motors, hence less construction expense and greater parts variety

Parameter Name	Parameter Value
AC/DC	DC
Type	brushless
Voltage (V)	24 - 24
Power (W)	7 - 7
Torque (Nm)	0.022 - 0.022
Rotational speed (rpm)	3000 - 3000
Diameter (mm)	33 - 33