The construction of BLDC motors is very similar to the construction of the previously described EC motors. However, here a highly efficient permanent magnet rotor is used. The utilized sintered rare earth magnet segments (NdFeB) entail a higher degree of efficiency and thus a higher power output. The higher power density of this motor type enables the realization of a more compact size. For BLDC motors a high-order and very robust encoder system on Hall basis
(HES) is employed. BLDC motors are particularly suitable for dynamic drives in 4 Q operation.
The BLDC series of Heidrive GmbH consists of two sizes with two lengths in each case and is covering a power range from 200 W to 800 W. This corresponds to a nominal torque from 0.65 Nm to 2.55 Nm. The motors specified here have a fourfold overload capacity.