The EC 4 brushless DC motor is Maxon Motor's ultra-compact motor. As the smallest micromotor to come from them, the EC 4 is only 4 mm in diameter. It is available in two lengths, with power ratings of 0.5 and 1 W. Equipped with an ironless Maxon winding, the EC 4 stands out for its robust design, high power density, and energy efficiency.

Combined with the matching GP 4 planetary gearhead, the EC 4 becomes a compact drive for use in micropumps, analytic and diagnostic devices, and laboratory robots. It can adjust lenses, dispense fluids, or position sensing devices. All units meet the ISO 13485 medical standard.