There are cases where flat motors are difficult to integrate in a structure. The joints of robots are an example. Drive specialist maxon motor therefore offers its brushless flat motors as a frameless motor kit. Rotor and stator are delivered separately, without bearings and motor shaft, and connected only when the components are assembled. This gives the customer the best of both worlds: high torque density and minimum volume. With outer diameters from 32 to 90 millimeters, the brushless DC motors are extremely compact. Designed as external rotor motors, they offer plenty of space inside for cable glands. maxon delivers them with or without a Hall sensor for easy control.