Inside a Maxon EC45 BLDC motor

This series of photos shows how are made flat brushless motors (BLCD) from Maxon Motors. These photos makes it easy to understand the operation of this kind of motor. This is a flat EC45 motor (reference 339285), which, although is a higher range motor, is quite simple and represents the basics of BLDC motors.

Front view of the motor:

Back view of the motor:

The cap can be removed:

Magnets are located in the cap (black ring):

The BLDC EC45 motor is composed of 12 windings (4 series of 3 phases):

Three hall sensors are located between windings (small black parA serie of pictures that shows how the Maxon EC45 brushless DC (BLDC) motor are made. These pictures shows the interior of the BLDC motor.ts at the bottom):

The cap is mounted on ball bearings:

Top view of the cap (with printed references):

Inside a Maxon EC45 BLDC motor

See also